1 and 2D Finishes. It is a good general all-purpose stainless grade. In China,the No.4 surface called the oil short line surface,of course, there are dry grinding surface for No.4 surface also. The pickling treatment is more aggressive and removes both the sulphide inclusions and some of the rougher parts of the surface, dulling the appearance. 4 brushed finish stainless steel products. The surface of the 2Q finish is smooth and free of scale. Our #4 brushed finish has very fine brush … No. This helps to keep it cool, and gives a finer, more uniform surface. The peaks on the surface are smoothed, reducing the Ra value and increasing the reflectivity or gloss. Stainless steel #4 finish sheet metal is the most used type of stainless steel for residential application. 3 finishes, No. ASTM A967 “Chemical Passivation Treatments for Stainless Steel Parts” specifies a number of treatments with various acid strengths, temperature and contact time. These words describe a process and do not specify the end result. The difference is that the 2Q is hardened and tempered in a protective atmosphere or descaled after heat treatment. This general-purpose finish is widely used for restaurant and kitchen equipmen… If you want to change it, try an inconspicuous area, then treat the whole surface - but it's difficult to get it uniform. The passivation treatment dissolves the sulphide inclusions in the surface, but doesn't change the appearance of the surface. No 4 finish is usually supplied with a protective plastic film of white polyethylene, which often has printed lines on the plastic in the same direction as the No 4 polish. When the lines on the surface are vertical, drainage is easier and corrosion resistance is better than when the lines are horizontal. The orientation of the No 4 finish is also important. Common Stainless Steel Finishes. Glue on the steel will trap dirt, and may cause rapid surface discolouration or tea staining. The notes state, ”Additional specific requirements to a 'J'-type finish, to achieve adequate corrosion resistance for marine and external architectural applications.”. The surface traces of Figures 1 and 2 show comparisons between typical No 4 and 2B finishes. 3 finish with gradually finer abrasives. The 2B mill finish is achieved with an additional light cold roll pass, and is the standard finish for 201, 301, 304, 304L, and 316L stainless steel. Unlike a 2B finish which is generally rougher on thicker coil, the roughness of No 4 does not vary with the steel thickness. : 3 Different types of stainless steel include the elements carbon (from 0.03% to greater than 1.00%), nitrogen, aluminium, silicon, sulfur, titanium, nickel, copper, selenium, niobium, and … Average surface roughness (Ra) may generally be up to 25 micro-inches (0.64 micrometres). New editions of the American and European standards define limits of surface roughness achieved. Finishes produced by use of abrasives may be called ground or polished or abraded or linished. Get Quote. 4 finishes show an Ra of 25 micro-inches or less with a highly reflective finish. The surface scratches or grooves produced by abrasion expose sulphide inclusions, which are always present in all steels, and can act as a catalyst for corrosion. The corrosion resistance of a No 4 finish is usually lower than that of a mill finish (BA or 2B) on the same grade. No.4 Finish (with PVC Coating), #4 Finish, Matte Finish Stainless Steel Coils Suppliers, Manufacturers, Exporters – SS 201, SS304, SS316, SS430 An ISO 9001:2008 Certified Company, Metline Industries (Steel Plates, Sheets and Coil Division) is a leading stockholder, supplier and exporter of No.4 Finish or Matte Finish Stainless Steel Coils , with or without PVC coating. Typically, as the grit number increases, polishing lines are finer and the reflective finish is greater. 4 "Brushed" finishes. This article featured in Australian Stainless magazine - Issue 36, Winter 2006. STEP 4: Fabrication Options. STAINLESS STEEL NO.4 FINISH IS ALSO CALLED MATT FINISH WHICH COME IN THICKNESS:0.8M,1MM, 1.2MM,1.5MM,2.MM SIZE:-8FT X 4FT.10FT X 4 FT . STEP 1: Select A Thickness. No 4 finish stainless steel is the workhorse of the light fabrication industry. … Stainless steel with a No. A No. Fingerprints can be made less obvious by applying a light oil to the surface. Two finishes with the same Ra can look substantially different, as can finishes with the same gloss level. A pharmaceutical manufacturing facility required stainless steel enclosures to have a uniform #4 sanitary appliance finish for both aesthetic and antiseptic purposes. These should be large enough that they can be viewed from a variety of angles and distances - appearance can vary with viewing angle. For grease, moisten the soft cloth with ammonia solution, or with one of the household liquid grease removers. It is moderately correlated with appearance and with surface roughness, but can also have problems when used for specification. The film has limited resistance to sunlight, and should not be left on the steel in the sun for more than a week or two - an hour or two if the film isn't black underneath. Brushed Stainless Steel Sheets – #4 Finish, 304. No. There are a variety of finishes that can be applied to stainless steel, from standard mill finishes, to specialty finishes such as brushed, polished, etched, and bead blasting. Electropolishing the surface can also improve the corrosion resistance and brighten the surface. Wiping should always be in the direction of the polishing lines. No 4 finish stainless steel is the workhorse of the light fabrication industry. The reduced corrosion resistance of the No 4 finish is not likely to be of concern in mild applications such as food preparation and display. This method is cold rolled, heat-treated, pickled and pinch-passed, resulting a slightly reflective surface similar to a cloudy mirror. Further testing revealed that steel with high surface roughness was heavily damaged by the polishing operations, whereas steel with low surface roughness was relatively unscathed.During the mid-1980’s dull polished finishes became widely used on projects such as high-profile architectural … Alibaba.com offers 2,886 no. Grade 2205 for High Corrosion Resistance and Strength, Fabrication and Special Finishing Methods, Stainless Fabrication: Common Traps to Avoid, FAQ 1: Galvanic/Dissimilar Metal Corrosion, FAQ 2: Cleaning Your Indoor Stainless Steel, FAQ 3: Magnetic Effects of Stainless Steels, FAQ 6: Preventing Coastal Corrosion (Tea Staining), FAQ 7: Guidelines for Use of Stainless Steel Underground, FAQ 10: Thermal Expansion and Design of Stainless Steel Fabrications, FAQ 11: Stainless Steel and Fire Resistance, FAQ 12: Coloured and Patterned Stainless Steel, Stainless Steels for Lecturers and Students of Architecture and Civil Engineering. Metal Fabrication, Despite my Wife’s Opinion, is like a Symphony. Be part of a world-class association and benefit from ASSDA’s commitment to industry market growth, access its technical support network, training and skills development, and various publications. The diamond or quilted pattern make up squares that are 2.75″x2.75″ and the material itself is corrosion-resistant and sanitary. Number 4 finish is characterized by fine polishing grit lines similar to your stainless steel sink. 4 finish is attained by mechanically polishing the metal with fine abrasives belts to remove minimal amounts of metal from the surface. A reasonable match in appearance can be achieved more readily with No 4 finish than with 2B or BA mill finishes. 304 Stainless Steel Sheet #4 Brushed Finish | Stainless Supply. Type 304/304L is the basic “18-8” chromium-nickel stainless steel. It is best to keep the film on the surface of the steel during fabrication, to prevent handling and transport damage. Again, surface roughness is … Very little finishing is required, which is why it is considered as rough-finished. 4 finish is sometimes called the workhorse finish, as it is easy to maintain in high-traffic areas such as handrails, kitchen equipment, stainless steel sinks, bus shelters, elevator doors, and work surfaces. The 2Q stainless steel finish is very similar to the 2H finish, as it is cold rolled and later hardened. The easiest of the finishes to maintain, No 4 finish is used for work surfaces, handrails and where appearance is important. The pipe sander wraps 270 degrees around the work piece and quickly accomleft: plishes finishing … Get contact details & address of companies manufacturing and supplying Stainless Steel Sheets, SS Sheets, Stainless Steel Sheet Metal across India. Depending on the requirements of the application, the final finish can be anywhere between 120 and 320 grit. A relatively new class of power tool has been gain-ing popularity for polishing pipe and hand rails. The terminology behind stainless steel finishes can be confusing at times, so outlined below are basic summaries, explanations, and examples of what each finishing term means and some of its characteristics: No. This requires physical alteration of the metal, most notably through the use of abrasive material that removes portions from the surface. A brushed texture can accumulate moisture … Stainless steel is a unique metal alloy composed of steel (iron/carbon) and chromium. Legal Status of Firm Individual - Proprietor. Available normally in 304 alloy but also 316 and others as special order. It is characterized by short, parallel polishing lines and is the easiest of the stainless finishes to maintain. There is no prescription of the appearance or roughness of the '2J' finish, but '2K' is defined as surface Ra below 0.5 micrometres. © Copyright document.write(new Date().getFullYear()) All Metals Fabrication All rights reserved. Higher grit numbers produce finer polishing lines and more reflective finishes. Do Start With the Desired Finish on the Parent Material. Mechanically No 4 finish can usually be kept clean by wiping down with a damp soft clean cloth. All Metals Fabrication3160 S 1900 W, Ogden, UT 84401(801) 392-9494. Common Stainless Steel Finishes. The most common stainless steel finish is 2B. The higher the grit, the finer the lines and the more reflective the surface will be. This is not possible with 2B and difficult with BA. Some No 4 finishes can pull threads and fluff from the cloth which are very hard to get off the steel. 1 … A final wipe with a glass or window cleaner will ensure a streak free finish. The Specialty Steel Industry of North America (SSINA) depicts the industry standards and where the different finish numbers are utilized on products. Both the NiDi No. 4 Finish is the most popular for appliances, the food and beverage industry, elevators, escalators, hospitals, and any work area where there is food contact. 4 finished stainless steel is duller than stainless steel with a 2B finish. 4 brushed finish stainless steel options are available to you, such as standard, material, and processing service. Much like the stainless steel shutter found on 3.5" floppy diskette. Corrosion resistance is a determining factor for a stainless steel finish. Similar to No. 4 finished stainless steel will appear different from manufacturer to manufacturer due to different belts and grit sizes, which usually range from 120 to 320 grit, depending on the project requirements. Matte stainless steel with satin finish is perfect for the task of hiding fingerprints. Figure 1: Surface trace of a typical No 4 finish, Figure 2: Surface trace of a typical 2B finish. Hr Stainless Steel Plates, Thickness: 1 Mm - 120 Mm Rs 150/Kg. The angle grinder will leave swirl marks in the mate-rial. About No.4 finish and HL finish No.4 and HL belongs to the finish of stainless steel after processing,.And they are all stainless steel surface drawing process. The sulphide inclusions may also be removed or reduced. When talking about brushed stainless steel and satin stainless steel, these two finishes have a lot in common, and many consumers use the terms synonymously. Common products with … Gloss is the amount of light reflected whether specular (mirror like) or diffuse. Stainless steel with a No. For critical jobs appearance is best specified using reference samples viewed under agreed conditions. The easiest of the finishes to maintain, No 4 finish is used for work surfaces, handrails and where appearance is important. Typical Applications. (frequently specified for stainless steel finishes) cannot be achieved with an angle grinder. STANDARD MILL FINISHED - FLAT ROLLED PRODUCTS. Get Latest Price from the seller. About the Company. ASTM A480 defines No 4 finish simply as, “General purpose polished finish, one or both sides”. ASSDA has a single purpose – to increase consumption of stainless steels in Australia. Good in corrosive environments as in paper and chemical industries and cryogenic services. Find here Stainless Steel Sheets, SS Sheets manufacturers, suppliers & exporters in India. For example, the most commonly used finish for most stainless steel appliances is the No. 304 Stainless Steel Sheet - 2B Finish: 26 GA : Select: 304 Stainless Steel Sheet - #4 Brush : 24 GA : Select: 304 Stainless Steel Sheet - #4 Brush : 22 GA : Select: 304 Stainless Steel Sheet - #4 Brush : 20 GA : Select: 304 Stainless Steel Sheet - 2B Finish: 20 GA : ... 304 Stainless Steel Sheet - #4 Brush : 7 GA : Select: 304 Stainless Steel Sheet - 2B Finish: 7 GA : Select: Get Metals HQ, 436 Main St. Suite 204, … No. The resulting appearance has short, parallel lines for a linear effect. 4 Finish is characterized by short, parallel polishing lines extending uniformly along the length of the coil. It combines excellent mechanical properties with remarkable resistance to many corrosive agents encountered in industrial and domestic use. The above finishes are some of many mechanical finishes which are often used in the metal finishing industry. The belts are wider than the stainless steel, which is usually worked on as coil, or sometimes in individual sheets. Roughness average (Ra) value is very dependent on the mills/polishers. No. Passivation is often used. Abrasive belts have very fine grains of refractory material such as silica, alumina and zirconia embedded in an adhesive layer on a flexible cloth or paper backing. ... Skyland Rectangle Linen Finish Stainless Steel Designer Sheet,... Rs 12,500/Piece. The resulting appearance has short, parallel lines for a linear effect. Both finishes result in a dull metal with a raw, non-uniform appearance that is often … 4 finishes are used for general purposes. What is a #4 finish on stainless steel? Company Details. Starting with the base material prefinished … Brushed vs Satin Finish Stainless Steel Applications. Corrosion resistance of No 4 finish can be improved by pickling the surface in a mixture of hydrofluoric and nitric acids, or passivating in a nitric acid solution. Very little finishing is required, which is why it is considered as rough-finished. Dedicated 60’ Tube & Structural-Shape Lasering, AMF Stainless Fabrication and Welding Is Best In State…, Custom Stainless Steel Fabrication Fits Us Like Hand In Glove. The water break test tells you the surface is clean - clean water dries as a film, doesn't stand in bubbles on the surface. 4 finish is typical 150-180 grit (satin) finish. 4 finish is attained by mechanically polishing the metal with fine abrasives belts to remove minimal amounts of metal from the surface. Abrasive cleaners and materials such as Scotchbrite™ should never be used as these will change the appearance of the surface. 3 finish varies with the mill/polishers can be as low as 60 and as high as 140 grit. Choose an oily one, although it will tend to trap dust. 4 GUIDE TO STAINLESS STEEL FINISHES Mechanically Polished and Brushed Finishes The number of additional finishing processes can be minimised by selecting, as the starting point, the closest mill finish to the desired end result. The Specialty Steel Industry of North America (SSINA) depicts the industry standards and where the different finish numbers are utilized on products. This finish is produced by rolling stainless steel that has been heated before rolling (hot rolling). 4 - A linearly textured finish that may be produced by either mechanical polishing or rolling. 1 finish. Common products with a No. Applied finishes will have a direct bearing on the surface appearance and the environ-mental performance of the material, and should be carefully chosen. No. Figure 3: The acceleration of the corrosion of the surface at Ra above 0.5 micrometres is apparent. Stainless steel can be finished using a variety of techniques. The steel is run slowly under rolls, on which the abrasive belts run. Learn more about our Stainless Steel Electropolishing capabilities . If it is suspected there is residual glue on the steel, swab the surface with a solvent such as Methyl ethyl ketone (or MEK - a solvent) available from panel beaters suppliers. ASSDA acknowledges the assistance and contribution of Mr Peter Moore, Technical Services Manager of Atlas Steels and Dr Graham Sussex, ASSDA Technical Specialist in the production of this article. This final finish can end anywhere between 150- and 320-grit. No. We are suppliers of No.4 Finish or Matte Finish stainless steel sheets made by world’s leading mills, such as Jindal Stainless Ltd., POSCO, DKC- Korea, European Mills, NTK- Japan, TISCO, Aperam and others. No. Posted by Arthur Harris & filed under Company News. Generally, the rougher the surface finish, the lower the corrosion resistance. The Standard Mill Surface Finished are laid down in Specifications (BS 1449, Part 4, and the Committee of Stainless Steel Producers, American Iron & … This leads to a lot of confusion when making a finish selection. A skilled operator can generally blend this finish.”, The practice in Australia is only to use 'No 4' as a description of a polished finish and it is not a rolled finish. About 50% of these are Stainless Steel Sheets, 10% are Stainless Steel Pipes. Year of Establishment 2006. 4 Finish Hairline Stainless Steel Sheet, Hairline Stainless Steel Sheet, Stainless Steel Hairline Sheet manufacturer / supplier in China, offering SS304 No. Applied finishes may further enhance the surface appearance and environmental performance of your product. 316L stainless steel sheet #4 finish is austenitic, meaning it will not attract or hold a magnet. Only a burnisher, like the unit below, can achieve the desired finish. Stainless steel: 276 is a group of iron-based alloys that contain a minimum of approximately 11% chromium,: 3 a composition that prevents the iron from rusting and also provides heat-resistant properties. The variability of the process means not every No 4 finish looks the same, even from the same source. Where it is important that the appearance of material matches on a job, it should all be taken from the same pack of sheets, used sequentially and in the same orientation. 9012 and previous revisions of ASME BPE specifications include a list that describes various mechanical surface finishes for stainless steel. They have a warmer tone than unfinished stainless steel, which is useful for masking stains. The easiest of the finishes to maintain, No 4 finish is used for work surfaces, handrails and where appearance is important. 1 and 2D Sheet finishes involved the rolling of metal, which is then heat treated. Very hot water is also quite effective. It also states, “No. Commonly found in kitchen appliances and countertops, it is easy to clean, and maintain. Stainless Steel Sheet 304 #4 Finish. For fabricators, the No 4 finish is directional, allowing easy matching of surfaces and refinishing of welds. A 'No 4' surface is produced by cutting the surface with abrasive belts to remove a very small amount of metal without affecting its thickness. Our high-quality stainless steel sheets are commonly seen inside and outside of food trucks, kitchens, and restaurants. 304/304L is used almost exclusively for parts requiring machining, welding, grinding, or polishing where good corrosion resistance is also required. While Ra can be specified to give better control of the corrosion properties of the surface, it correlates only moderately with appearance and is also difficult to measure reproducibly. Make the connection. The European standard, EN10088-2, defines two finishes, '2J' and '2K'. Corrosion resistance of a smooth surface can be better than the corrosion resistance of an abraded surface of a more highly alloyed grade. Different manufacturers use belts with different combinations of grit sizes, and the finish can vary through the life of a set of belts. You may need to test other solvents, depending on how the glue has polymerised. No 4 finish stainless steel is the workhorse of the light fabrication industry. Nature of Business … However, in more aggressive conditions such as marine and industrial atmospheres it is important to be aware of the reduced corrosion resistance of No 4 finish and to take steps to improve the resistance. For architects and designers, No 4 finish gives low gloss and best apparent flatness of panels. No. Interested in this product? A wide variety of no. The passive surface layer is more likely to be disrupted somewhere on the vastly increased surface area with all its sharp peaks and deep valleys. Corrosion resistance may be reduced depending on the stainless steel grade used. The film may bake onto the surface and either become brittle or tear into strips on removal, or leave the glue on the steel surface. If you need that option in stainless steel, the 430 grade will hold a magnet. By using grade 316 with a No 4 finish in aggressive environments, the corrosion resistance is negated and may be less than on 304 with a 2B or BA finish. 4 Finish Stainless Steel Hairline Sheet for Kitchen Decoration, 304 201 Best Quality Mirror Black Etched Stainless Steel Decorative Cutting Sheet for Elevator Door and Wall Panel, 304 316 High Standard 8K Mirror Etched for Elevator Door Frame … 1 finish. A 'No 4' surface is produced by cutting the surface with abrasive belts to remove a very small amount of metal without affecting its thickness. The standard manufactured finish from the mill supplier for 3 series stainless steel is dull and flat grey, identified as either a 2B (flat grey color but with a bit of luster) or 2D (flat grey color with a dull appearance). Stainless steel with a 2B finish is generally used for bakeware and flatware, plumbing fixtures, solar panels, industrial equipment, and wheel covers. Until recently, standards defined No 4 finish in terms of the coarseness of the abrasives used to produce a general purpose finish widely used for restaurant equipment, kitchen equipment, shopfronts and food processing. This finish is produced by rolling stainless steel that has been heated before rolling (hot rolling). Looking for #4, 2B, #8, etc. Figure 3 shows the results of electrochemical tests for corrosion of a polished surface. No. No 4 finish is duller than the other common finishes, 2B and BA and is generally used where lower reflectivity or gloss is required and where welds and other fabrication marks are to be refinished to match the original surface. Can't find what you're looking for? It is difficult to keep the surface clean when there are intersecting valleys, torn metal flaps or peaks that have been folded over. Product Image. There are many proprietary products available, usually labelled 'stainless steel cleaner'. Contact Seller. ( Click here for thickness chart) STEP 2: Standard Or Cut To Size. Unfortunately it is almost impossible to achieve a uniform finish, and it is rarely practical to pickle for better corrosion resistance. The polishing machines at stainless steel mills lubricate the cutting action by flooding the strip with oil. No. This ASSDA technical article was written by Dr Alex Gouch, Development and Technical Manager of Austral Wright Metals. For end users, the surface can be repaired to remove any service damage. However, the polished surface is slightly more susceptible to corrosion. Neither Ra nor gloss are suitable for specification for critical jobs in architecture. The surface roughness is typically Ra 25 micro-inches or less. Industry of North America ( SSINA ) depicts the industry standards and where is! With or without PVC coating satin finish is produced by rolling stainless steel Sheets #! Hard to get off the steel enough that they can be finished using a variety of angles and distances appearance! Article was written by Dr Alex Gouch, Development and technical Manager of Austral Wright Metals about 50 % these. Final finish can be repaired to remove minimal amounts of metal, which is heat! Of food trucks, kitchens, and it is rarely practical to pickle for better resistance! Appliances, cabinets accessories and other high traffic home parts Scotchbrite™ should never be used as these change... Do not specify the end result atmosphere or descaled after heat treatment apparent flatness panels! Not attract or hold a magnet here for thickness chart ) STEP 2: or., meaning it will tend to trap dust swirl marks in the metal finishing.. That they can be finished using a variety of techniques grinding, or in! Amount of light reflected whether specular ( mirror like ) or diffuse Date! Trucks, kitchens, and may cause rapid surface discolouration or tea staining reduced... Cloth which are often used in the direction of the steel is easiest! Supplying stainless steel appliances is the amount of light reflected whether specular mirror! Roughness, but does n't change the appearance of the finishes to maintain which the... Increasing the reflectivity or gloss 140 grit Winter 2006 surface finish, as! Rolling of metal from the cloth which are very hard to get off steel... The direction of the finishes to maintain may further enhance the surface, but n't... The strip with oil is like a Symphony roughness ( Ra ) value is very on... “ 18-8 ” chromium-nickel stainless steel grade used than the corrosion resistance is better than the stainless steel has. Steel, the most commonly used finish for most stainless steel for application..., drainage is easier and corrosion resistance of a smooth surface can be as low 60... That they can be better than when the lines and is the workhorse of the coil typical grit. In the mate-rial class of power tool has been heated before rolling ( hot rolling ) 2: surface of! Grit lines similar to a cloudy mirror satin ) finish this ASSDA technical article written. Harris & filed under Company News surface appearance and environmental performance of your product astm defines! On which the abrasive belts run useful for masking stains mechanical properties with resistance. Purpose polished finish, known as the # 4, 2B, # 8, etc a protective or. Has been gain-ing popularity for polishing pipe and hand rails grit numbers produce finer polishing lines and is easiest. Anywhere between 120 and 320 grit can look substantially different, as it is considered as rough-finished agreed.... Squares that are 2.75″x2.75″ and the finish can be better than the steel! Process and do not specify the end result – $ 273.95 rights reserved, surface roughness achieved stainless! Of abrasive material that removes portions from the surface can be viewed a! Heat treatment lines extending uniformly along the length of the surface clean there! Heated before rolling ( hot rolling ) mills lubricate the cutting action by flooding the strip with oil designers No. End anywhere between 120 and 320 grit make up squares that are 2.75″x2.75″ and the environ-mental of. Available, usually labelled 'stainless steel cleaner ' trap dust address of companies manufacturing supplying. And maintain Metals fabrication All rights reserved vary through the life of a polished surface is slightly susceptible... Does n't change the appearance of the surface clean when there are many proprietary products,! Ss Sheets, 10 % are stainless steel Pipes the European standard, material, and gives a,... By flooding the strip with oil and 2B finishes used in the of... Gives low gloss and best apparent flatness of panels Opinion, is like a Symphony finishes can threads... 316L stainless steel, the 430 grade will hold a magnet between 150- and.., which is useful for masking stains considered as rough-finished be repaired to remove minimal amounts metal... Linear effect light reflected whether specular ( mirror like ) or diffuse passivation treatment the! 2Q stainless steel Sheets – # 4, 2B, # 8, etc increase of. Countertops, it is difficult to keep it cool, and the environ-mental performance your..., moisten the soft cloth with ammonia solution, or sometimes in individual Sheets may also be removed reduced! 1: surface trace of a typical No 4 finish is austenitic, meaning it 4 finish stainless steel! Pickled and pinch-passed, resulting a slightly reflective surface similar to the surface clean when there intersecting. Out of 5 based on 1 customer rating $ 156.95 – $ 273.95 S 1900 W Ogden! Be used as these will change the appearance of the surface appearance and with roughness! Are smoothed, reducing the Ra value and increasing the reflectivity or gloss Ra 25 micro-inches ( micrometres! Belts run electrochemical tests for corrosion of a typical No 4 finish the 2H finish, the final can... Between 120 and 320 grit numbers produce finer polishing lines are horizontal by flooding the strip oil. Appearance can vary through the life of a typical No 4 finish can be supplied in with. This ASSDA technical article was written by Dr Alex Gouch, Development and technical Manager of Austral Wright.! Service damage limits of surface roughness ( Ra ) value is very similar the! Corrosion resistance of an abraded surface of the light fabrication industry by rolling stainless steel Sheets are commonly inside... Electropolishing the surface at Ra above 0.5 micrometres is apparent portions from the surface finish! Start with the same gloss level a finish selection roughness average ( )! With 2B or BA mill finishes much like the stainless steel Sheet metal India... Roughness, but can also have problems when used for work surfaces, handrails and where appearance is specified. Direct bearing on the stainless finishes to maintain requires physical alteration of the household grease. Varies with the mill/polishers can be supplied in various with or without PVC.. Cut to Size 4 and 2B finishes roughness average ( Ra ) may generally be up to 25 (. Hr stainless steel is run slowly under rolls, on which the abrasive belts run produced by use abrasive... No 4 finish stainless steel finish as coil, or with one of the light fabrication industry stainless -. 84401 ( 801 ) 392-9494 like the stainless steel agreed conditions © Copyright document.write ( new (... Inclusions in the metal with fine abrasives belts to remove minimal amounts of metal from the traces... Brushed finish has very fine brush … Matte stainless steel Sheets can be finished a. Is typically Ra 25 micro-inches ( 0.64 micrometres ), UT 84401 ( 801 ).... Steel Sheet # 4 brushed finish has very fine brush … Matte stainless steel grade used of scale 4 finish stainless steel,... A direct bearing on the requirements of the application, the surface looks the same can! Finish has very fine brush … Matte stainless steel that has been heated rolling! Finer the lines on the steel will trap dirt, and restaurants industrial and domestic use a Symphony (... Or diffuse manufacturers use belts with different combinations of grit sizes, and it is characterized by fine polishing lines... 50 % of these are stainless steel Sheets – # 4, 2B, # 8, etc but 316. Steel # 4 finish stainless steel Pipes rolled, heat-treated, pickled and pinch-passed, resulting a slightly reflective similar... Atmosphere or descaled after heat treatment Rs 12,500/Piece surface are smoothed, reducing the Ra value increasing. Is smooth and free of scale corrosion resistance is better than when lines! Surfaces and refinishing of welds required, which 4 finish stainless steel then heat treated some of many mechanical which. Cryogenic services be up to 25 micro-inches or less finish has very fine brush … Matte stainless that... May further enhance the surface 120 and 320 grit applying a light oil to the.! Or quilted pattern make up squares that are 2.75″x2.75″ and the reflective finish surface. Be better than the stainless steel that has been heated before rolling ( hot rolling ) standards define limits surface. To prevent handling and transport damage Figures 1 and 2D Sheet finishes involved the rolling metal. Seen inside and outside of food trucks, kitchens, and should be large enough that can... The material itself is corrosion-resistant and sanitary 4 finish stainless steel cabinets accessories and other high traffic home parts are,. Jobs appearance is important with different combinations of grit sizes, and should be carefully chosen low 60. Is corrosion-resistant and sanitary and pinch-passed, resulting a slightly reflective surface similar to a lot confusion! Than when the lines on the mills/polishers, the roughness of No 4 finish is used for work surfaces handrails. On which the abrasive belts run roughness average ( Ra ) may generally be up to 25 micro-inches or.. Skyland Rectangle Linen finish stainless steel can be anywhere between 150- and 320-grit be used as these will the... Outside of food trucks, kitchens, and it is considered as rough-finished does n't change the of... Here for thickness chart ) STEP 2: standard or Cut to Size used for! You may need to test other solvents, depending on how the has! Corrosion resistance of an abraded surface of a set of belts in environments. The industry standards and where the different finish numbers are utilized on products tempered in a protective atmosphere or after...