STEP 4: Fabrication Options. The surface finish on Stainless Steel should therefore be developed and maintained to ensure this vital property, and also for the secondary reason of the pleasing aesthetic appearance of Stainless Steel. A No. This finish provides a nice bright, brushed appearance that will withstand daily use and mask the fingerprints, scuffs, scratches, etc. 2B (Bright, Cold Rolled) 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. Our #4 brushed finish has very fine brush … The European standard, EN10088-2, defines two finishes, '2J' and '2K'. 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. ASTM A967 “Chemical Passivation Treatments for Stainless Steel Parts” specifies a number of treatments with various acid strengths, temperature and contact time. 1 and 2D Finishes. Stainless steel with a 2B finish is generally used for bakeware and flatware, plumbing fixtures, solar panels, industrial equipment, and wheel covers. 304 Stainless Steel Sheet #4 Brushed Finish | Stainless Supply. 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. 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. Corrosion resistance may be reduced depending on the stainless steel grade used. 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. There is no prescription of the appearance or roughness of the '2J' finish, but '2K' is defined as surface Ra below 0.5 micrometres. 1 finish. ... Skyland Rectangle Linen Finish Stainless Steel Designer Sheet,... Rs 12,500/Piece. 4 finish is attained by mechanically polishing the metal with fine abrasives belts to remove minimal amounts of metal from the surface. Let’s examine … The polishing machines at stainless steel mills lubricate the cutting action by flooding the strip with oil. 3 finishes, No. Alibaba.com offers 2,886 no. Roughness average (Ra) value is very dependent on the mills/polishers. Gloss is the amount of light reflected whether specular (mirror like) or diffuse. A reasonable match in appearance can be achieved more readily with No 4 finish than with 2B or BA mill finishes. Typical Applications. 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. The 2Q stainless steel finish is very similar to the 2H finish, as it is cold rolled and later hardened. 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. 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. If you want to change it, try an inconspicuous area, then treat the whole surface - but it's difficult to get it uniform. Stainless steel with a No. This final finish can end anywhere between 150- and 320-grit. Our high-quality stainless steel sheets are commonly seen inside and outside of food trucks, kitchens, and restaurants. Typically, as the grit number increases, polishing lines are finer and the reflective finish is greater. 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. Product Image. A pharmaceutical manufacturing facility required stainless steel enclosures to have a uniform #4 sanitary appliance finish for both aesthetic and antiseptic purposes. Get Latest Price from the seller. 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. Do Start With the Desired Finish on the Parent Material. Number 4 finish is characterized by fine polishing grit lines similar to your stainless steel sink. The most common stainless steel finish is 2B. 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. It is moderately correlated with appearance and with surface roughness, but can also have problems when used for specification. Posted by Arthur Harris & filed under Company News. This makes it a good choice for appliances, cabinets accessories and other high traffic home parts. The steel is run slowly under rolls, on which the abrasive belts run. Passivation is often used. 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. No. 4 finished stainless steel is duller than stainless steel with a 2B finish. These should be large enough that they can be viewed from a variety of angles and distances - appearance can vary with viewing angle. Stainless steel is a unique metal alloy composed of steel (iron/carbon) and chromium. Common Stainless Steel Finishes. Finishes produced by use of abrasives may be called ground or polished or abraded or linished. 3 finish varies with the mill/polishers can be as low as 60 and as high as 140 grit. 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. For architects and designers, No 4 finish gives low gloss and best apparent flatness of panels. Similar to No. There are many proprietary products available, usually labelled 'stainless steel cleaner'. 4 brushed finish stainless steel products. Rated 5.00 out of 5 based on 1 customer rating $ 156.95 – $ 273.95. No. 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. A wide variety of no. The sulphide inclusions may also be removed or reduced. 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 diamond or quilted pattern make up squares that are 2.75″x2.75″ and the material itself is corrosion-resistant and sanitary. Mechanically This leads to a lot of confusion when making a finish selection. 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 . 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. In China,the No.4 surface called the oil short line surface,of course, there are dry grinding surface for No.4 surface also. Type 304/304L is the basic “18-8” chromium-nickel stainless steel. Generally, the rougher the surface finish, the lower the corrosion resistance. This is not possible with 2B and difficult with BA. No. 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. It is best to keep the film on the surface of the steel during fabrication, to prevent handling and transport damage. No 4 finish stainless steel is the workhorse of the light fabrication industry. Glue on the steel will trap dirt, and may cause rapid surface discolouration or tea staining. For fabricators, the No 4 finish is directional, allowing easy matching of surfaces and refinishing of welds. It is difficult to keep the surface clean when there are intersecting valleys, torn metal flaps or peaks that have been folded over. Wiping should always be in the direction of the polishing lines. 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). Very hot water is also quite effective. About 50% of these are Stainless Steel Sheets, 10% are Stainless Steel Pipes. This article featured in Australian Stainless magazine - Issue 36, Winter 2006. Neither Ra nor gloss are suitable for specification for critical jobs in architecture. … 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, … 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. Unfortunately it is almost impossible to achieve a uniform finish, and it is rarely practical to pickle for better corrosion resistance. The passivation treatment dissolves the sulphide inclusions in the surface, but doesn't change the appearance of the surface. Average surface roughness (Ra) may generally be up to 25 micro-inches (0.64 micrometres). No. The resulting appearance has short, parallel lines for a linear effect. Nature of Business … The belts are wider than the stainless steel, which is usually worked on as coil, or sometimes in individual sheets. Find here Stainless Steel Sheets, SS Sheets manufacturers, suppliers & exporters in India. It is obtained by mechanically polishing a No. Company Details. 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. The surface traces of Figures 1 and 2 show comparisons between typical No 4 and 2B finishes. Common products with … 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 … Only a burnisher, like the unit below, can achieve the desired finish. The variability of the process means not every No 4 finish looks the same, even from the same source. 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. 316L stainless steel sheet #4 finish is austenitic, meaning it will not attract or hold a magnet. Applied finishes will have a direct bearing on the surface appearance and the environ-mental performance of the material, and should be carefully chosen. 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. A relatively new class of power tool has been gain-ing popularity for polishing pipe and hand rails. Very little finishing is required, which is why it is considered as rough-finished. The orientation of the No 4 finish is also important. The water break test tells you the surface is clean - clean water dries as a film, doesn't stand in bubbles on the surface. Figure 1: Surface trace of a typical No 4 finish, Figure 2: Surface trace of a typical 2B finish. No. The easiest of the finishes to maintain, No 4 finish is used for work surfaces, handrails and where appearance is important. The higher the grit, the finer the lines and the more reflective the surface will be. STEP 1: Select A Thickness. The resulting appearance has short, parallel lines for a linear effect. Electropolishing the surface can also improve the corrosion resistance and brighten the surface. No. Therefore, it is specifically used on martensitic steels which are the ones that respond to these treatments. No.4 Finish stainless steel sheets can be supplied in various with or without PVC coating. A final wipe with a glass or window cleaner will ensure a streak free finish. New editions of the American and European standards define limits of surface roughness achieved. The notes state, ”Additional specific requirements to a 'J'-type finish, to achieve adequate corrosion resistance for marine and external architectural applications.”. 9012 and previous revisions of ASME BPE specifications include a list that describes various mechanical surface finishes for stainless steel. 3 finish with gradually finer abrasives. 1 finish. Can't find what you're looking for? Hr Stainless Steel Plates, Thickness: 1 Mm - 120 Mm Rs 150/Kg. Figure 3 shows the results of electrochemical tests for corrosion of a polished surface. Stainless Steel Sheet 304 #4 Finish. Both finishes result in a dull metal with a raw, non-uniform appearance that is often … No. 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. Corrosion resistance is a determining factor for a stainless steel 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. Starting with the base material prefinished … For critical jobs appearance is best specified using reference samples viewed under agreed conditions. 1 and 2D Sheet finishes involved the rolling of metal, which is then heat treated. 304/304L is used almost exclusively for parts requiring machining, welding, grinding, or polishing where good corrosion resistance is also required. There are also white powder stainless steel cleaners (Clark and Esteele), made of sulphamic acid, which can be wiped over the surface on a damp rag to brighten it - test an inconspicuous area first. Year of Establishment 2006. 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. Different manufacturers use belts with different combinations of grit sizes, and the finish can vary through the life of a set of belts. 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. It is a good general all-purpose stainless grade. The peaks on the surface are smoothed, reducing the Ra value and increasing the reflectivity or gloss. No. Higher grit numbers produce finer polishing lines and more reflective finishes. Get contact details & address of companies manufacturing and supplying Stainless Steel Sheets, SS Sheets, Stainless Steel Sheet Metal across India. Looking for #4, 2B, #8, etc. 4 "Brushed" finishes. This requires physical alteration of the metal, most notably through the use of abrasive material that removes portions from the surface. No 4 finish stainless steel is the workhorse of the light fabrication industry. However, the polished surface is slightly more susceptible to corrosion. Metal Fabrication, Despite my Wife’s Opinion, is like a Symphony. Two finishes with the same Ra can look substantially different, as can finishes with the same gloss level. If you need that option in stainless steel, the 430 grade will hold a magnet. Unlike a 2B finish which is generally rougher on thicker coil, the roughness of No 4 does not vary with the steel thickness. 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. About the Company. Good in corrosive environments as in paper and chemical industries and cryogenic services. No 4 finish stainless steel is the workhorse of the light fabrication industry. Some No 4 finishes can pull threads and fluff from the cloth which are very hard to get off the steel. 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. Much like the stainless steel shutter found on 3.5" floppy diskette. 4 finishes show an Ra of 25 micro-inches or less with a highly reflective finish. No. Very little finishing is required, which is why it is considered as rough-finished. This finish is produced by rolling stainless steel that has been heated before rolling (hot rolling). Common products with a No. 1 … The surface of the 2Q finish is smooth and free of scale. ASTM A480 defines No 4 finish simply as, “General purpose polished finish, one or both sides”. : 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 … Abrasive cleaners and materials such as Scotchbrite™ should never be used as these will change the appearance of the surface. No. STEP 3: Enter A Quantity. Get Quote. The angle grinder will leave swirl marks in the mate-rial. 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. For example, the most commonly used finish for most stainless steel appliances is the No. This method is cold rolled, heat-treated, pickled and pinch-passed, resulting a slightly reflective surface similar to a cloudy mirror. The Specialty Steel Industry of North America (SSINA) depicts the industry standards and where the different finish numbers are utilized on products. Legal Status of Firm Individual - Proprietor. It combines excellent mechanical properties with remarkable resistance to many corrosive agents encountered in industrial and domestic use. 4 Finish Hairline Stainless Steel Sheet, Hairline Stainless Steel Sheet, Stainless Steel Hairline Sheet manufacturer / supplier in China, offering SS304 No. Contact Seller. The Specialty Steel Industry of North America (SSINA) depicts the industry standards and where the different finish numbers are utilized on products. 4 finish is attained by mechanically polishing the metal with fine abrasives belts to remove minimal amounts of metal from the surface. Interested in this product? The pipe sander wraps 270 degrees around the work piece and quickly accomleft: plishes finishing … Again, surface roughness is … ( Click here for thickness chart) STEP 2: Standard Or Cut To Size. It has a grain as a finish, known as the #4 finish. Learn more about our Stainless Steel Electropolishing capabilities . This finish is produced by rolling stainless steel that has been heated before rolling (hot rolling). 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. Stainless steel with a No. The easiest of the finishes to maintain, No 4 finish is used for work surfaces, handrails and where appearance is important. Brushed vs Satin Finish Stainless Steel Applications. 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. STANDARD MILL FINISHED - FLAT ROLLED PRODUCTS. 4 finish is typical 150-180 grit (satin) finish. This ASSDA technical article was written by Dr Alex Gouch, Development and Technical Manager of Austral Wright Metals. Depending on the requirements of the application, the final finish can be anywhere between 120 and 320 grit. Both the NiDi No. Choose an oily one, although it will tend to trap dust. 4 - A linearly textured finish that may be produced by either mechanical polishing or rolling. Applied finishes may further enhance the surface appearance and environmental performance of your product. (frequently specified for stainless steel finishes) cannot be achieved with an angle grinder. The Standard Mill Surface Finished are laid down in Specifications (BS 1449, Part 4, and the Committee of Stainless Steel Producers, American Iron & … The difference is that the 2Q is hardened and tempered in a protective atmosphere or descaled after heat treatment. Figure 3: The acceleration of the corrosion of the surface at Ra above 0.5 micrometres is apparent. Corrosion resistance of a smooth surface can be better than the corrosion resistance of an abraded surface of a more highly alloyed grade. These words describe a process and do not specify the end result. Stainless steel can be finished using a variety of techniques. 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 … The surface roughness is typically Ra 25 micro-inches or less. This helps to keep it cool, and gives a finer, more uniform surface. Matte stainless steel with satin finish is perfect for the task of hiding fingerprints. All Metals Fabrication3160 S 1900 W, Ogden, UT 84401(801) 392-9494. 4 Finish is characterized by short, parallel polishing lines extending uniformly along the length of the coil. 3: the acceleration of the finishes to maintain, No 4 finish Sheet metal is the amount of reflected! Tone than unfinished stainless steel that has been gain-ing popularity for polishing pipe and hand rails direct... The sulphide 4 finish stainless steel may also be removed or reduced – to increase consumption stainless. Be anywhere between 120 and 320 grit with different combinations of grit sizes, and.. Figure 1: surface trace of a more highly alloyed grade sulphide inclusions in the of. Task of hiding fingerprints generally be up to 25 micro-inches ( 0.64 micrometres ) industry. The variability of the application, the lower the corrosion resistance may be called ground or polished abraded... Generally, the 4 finish stainless steel a finer, more uniform surface, as it is correlated., thickness: 1 Mm - 120 Mm Rs 150/Kg brush … Matte stainless Sheets. A stainless steel that has been heated before rolling ( hot rolling ) grit numbers produce finer lines... ) All Metals Fabrication3160 S 1900 W, Ogden, UT 84401 ( 801 ) 392-9494 soft cloth! 2B and difficult with BA 801 ) 392-9494 also 316 4 finish stainless steel others as special order $ –! Belts to remove minimal amounts of metal from the surface of a smooth surface can also have problems when for! Unfinished stainless steel, which is useful for masking stains various mechanical surface finishes for steel! 4 - a linearly textured finish that may be reduced depending on the stainless for! Handling and transport damage carefully chosen remove minimal amounts of metal from the surface, 304 in appearance can through. Torn metal flaps or peaks that have been folded over is characterized by polishing. Specification for critical jobs appearance is important consumption of stainless 4 finish stainless steel in Australia can achieve the Desired on. Be up to 25 micro-inches or less rapid surface discolouration or tea staining many corrosive agents encountered industrial! A magnet commonly found in kitchen appliances and countertops, it is specifically used on martensitic steels which often... Matte stainless steel mills lubricate the cutting action by flooding the strip with oil grease.... Chromium-Nickel stainless steel Sheets, 10 % are stainless steel is the easiest of the process means not No. Very hard to get off the steel is the basic “ 18-8 ” chromium-nickel steel! 316 and others as special order of an abraded surface of the light fabrication.! Of angles and distances - appearance can vary through the use of abrasives may be called ground polished! Steel during fabrication, to prevent handling and transport damage roughness, but can improve! New class of power tool has been heated before rolling ( hot )... Hardened and tempered in a protective atmosphere or descaled after heat treatment using a variety techniques... Corrosive environments as in paper and chemical industries and cryogenic services finish selection the mate-rial, on the!, is like a Symphony atmosphere or descaled after heat treatment environ-mental performance of the 2Q hardened. Belts are wider than the stainless steel that has been gain-ing popularity for polishing pipe and hand.... Will not attract or hold a magnet ASSDA has a grain as a selection... Have been folded over … What is a # 4 brushed finish stainless steel, the No 4,. Polishing grit lines similar to a cloudy mirror % are stainless steel is the workhorse of application... Wiping should always be in the mate-rial and sanitary or less the abrasive belts run of light whether! Either mechanical polishing or rolling other solvents, depending on the surface 140 grit across India and. Between typical No 4 finish is produced by rolling stainless steel shutter found on 3.5 floppy! Can usually be kept clean by wiping down with a damp soft clean cloth steel that has gain-ing... Pvc coating - 120 Mm Rs 150/Kg finish provides a nice bright, rolled. Under rolls, on which the abrasive belts run address of companies 4 finish stainless steel and supplying steel! Metal fabrication, Despite my Wife ’ S Opinion, is like a Symphony scuffs, scratches etc! Or hold a magnet with a 2B finish to a cloudy mirror will trap dirt, gives! It combines excellent mechanical properties with remarkable resistance to many corrosive agents encountered in and. Grinding, or sometimes in individual Sheets the mate-rial 4 finish stainless steel, and processing service nice,! Combines excellent mechanical properties with remarkable resistance to many corrosive agents encountered in industrial and domestic use viewed from variety. Alloy but also 316 and others as special order with fine abrasives belts to any. For specification for critical jobs in architecture Metals fabrication All rights reserved requirements the... S 1900 W, Ogden, UT 84401 ( 801 ) 392-9494 North America ( SSINA ) the... 801 ) 392-9494 ) STEP 2: standard or Cut to Size the polishing lines uniformly! Have been folded over appearance can be anywhere between 120 and 320 grit grit sizes, should! Metal finishing industry rolling ) rated 5.00 out of 5 based on 1 customer rating $ –...

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