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. ( Click here for thickness chart) STEP 2: Standard Or Cut To Size. For end users, the surface can be repaired to remove any service damage. 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. The resulting appearance has short, parallel lines for a linear effect. The Standard Mill Surface Finished are laid down in Specifications (BS 1449, Part 4, and the Committee of Stainless Steel Producers, American Iron & … ASTM A480 defines No 4 finish simply as, “General purpose polished finish, one or both sides”. The sulphide inclusions may also be removed or reduced. Get Latest Price from the seller. For critical jobs appearance is best specified using reference samples viewed under agreed conditions. This general-purpose finish is widely used for restaurant and kitchen equipmen… 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. 4 brushed finish stainless steel products. Very hot water is also quite effective. No. It has a grain as a finish, known as the #4 finish. The polishing machines at stainless steel mills lubricate the cutting action by flooding the strip with oil. Choose an oily one, although it will tend to trap dust. 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. This requires physical alteration of the metal, most notably through the use of abrasive material that removes portions from the surface. No. This helps to keep it cool, and gives a finer, more uniform surface. 4 - A linearly textured finish that may be produced by either mechanical polishing or rolling. A No. Posted by Arthur Harris & filed under Company News. No. 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. Available normally in 304 alloy but also 316 and others as special order. Uses for 316L stainless steel #4 finish may include wall cladding, decorative commercial and residential stainless steel applications, outdoor applications, food grade applications, and any situation that high corrosion resistance is needed. Common products with a No. Abrasive cleaners and materials such as Scotchbrite™ should never be used as these will change the appearance of the surface. 3 finishes, No. No 4 finish stainless steel is the workhorse of the light fabrication industry. 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. 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. (frequently specified for stainless steel finishes) cannot be achieved with an angle grinder. © Copyright document.write(new Date().getFullYear()) All Metals Fabrication All rights reserved. It is difficult to keep the surface clean when there are intersecting valleys, torn metal flaps or peaks that have been folded over. The Specialty Steel Industry of North America (SSINA) depicts the industry standards and where the different finish numbers are utilized on products. The higher the grit, the finer the lines and the more reflective the surface will be. It is a good general all-purpose stainless grade. Both finishes result in a dull metal with a raw, non-uniform appearance that is often … No. The steel is run slowly under rolls, on which the abrasive belts run. It is obtained by mechanically polishing a No. Legal Status of Firm Individual - Proprietor. The belts are wider than the stainless steel, which is usually worked on as coil, or sometimes in individual sheets. Typically, as the grit number increases, polishing lines are finer and the reflective finish is greater. It is best to keep the film on the surface of the steel during fabrication, to prevent handling and transport damage. These should be large enough that they can be viewed from a variety of angles and distances - appearance can vary with viewing angle. No. 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. 4 finish is attained by mechanically polishing the metal with fine abrasives belts to remove minimal amounts of metal from the surface. 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. Again, surface roughness is … This ASSDA technical article was written by Dr Alex Gouch, Development and Technical Manager of Austral Wright Metals. The easiest of the finishes to maintain, No 4 finish is used for work surfaces, handrails and where appearance is important. This finish provides a nice bright, brushed appearance that will withstand daily use and mask the fingerprints, scuffs, scratches, etc. This leads to a lot of confusion when making a finish selection. 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. Mechanically Higher grit numbers produce finer polishing lines and more reflective finishes. A pharmaceutical manufacturing facility required stainless steel enclosures to have a uniform #4 sanitary appliance finish for both aesthetic and antiseptic purposes. 1 finish. Stainless steel can be finished using a variety of techniques. This is not possible with 2B and difficult with BA. The peaks on the surface are smoothed, reducing the Ra value and increasing the reflectivity or gloss. Therefore, it is specifically used on martensitic steels which are the ones that respond to these treatments. 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. 4 Finish Hairline Stainless Steel Sheet, Hairline Stainless Steel Sheet, Stainless Steel Hairline Sheet manufacturer / supplier in China, offering SS304 No. 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. 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. Passivation is often used. Applied finishes may further enhance the surface appearance and environmental performance of your product. It also states, “No. A final wipe with a glass or window cleaner will ensure a streak free finish. Can't find what you're looking for? There is no prescription of the appearance or roughness of the '2J' finish, but '2K' is defined as surface Ra below 0.5 micrometres. Brushed Stainless Steel Sheets – #4 Finish, 304. Corrosion resistance may be reduced depending on the stainless steel grade used. Glue on the steel will trap dirt, and may cause rapid surface discolouration or tea staining. Neither Ra nor gloss are suitable for specification for critical jobs in architecture. Roughness average (Ra) value is very dependent on the mills/polishers. No. Interested in this product? Starting with the base material prefinished … 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. 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. Figure 3: The acceleration of the corrosion of the surface at Ra above 0.5 micrometres is apparent. 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. 3 finish with gradually finer abrasives. The surface roughness is typically Ra 25 micro-inches or less. Typical Applications. Stainless steel is a unique metal alloy composed of steel (iron/carbon) and chromium. Common products with … The surface of the 2Q finish is smooth and free of scale. Common Stainless Steel Finishes. ASSDA has a single purpose – to increase consumption of stainless steels in Australia. The easiest of the finishes to maintain, No 4 finish is used for work surfaces, handrails and where appearance is important. Generally, the rougher the surface finish, the lower the corrosion resistance. 1 finish. No 4 finish stainless steel is the workhorse of the light fabrication industry. Brushed vs Satin Finish Stainless Steel Applications. Figure 3 shows the results of electrochemical tests for corrosion of a polished surface. This final finish can end anywhere between 150- and 320-grit. Rated 5.00 out of 5 based on 1 customer rating $ 156.95 – $ 273.95. Product Image. The diamond or quilted pattern make up squares that are 2.75″x2.75″ and the material itself is corrosion-resistant and sanitary. Very little finishing is required, which is why it is considered as rough-finished. Stainless steel with a No. No.4 Finish stainless steel sheets can be supplied in various with or without PVC coating. STEP 3: Enter A Quantity. Matte stainless steel with satin finish is perfect for the task of hiding fingerprints. The notes state, ”Additional specific requirements to a 'J'-type finish, to achieve adequate corrosion resistance for marine and external architectural applications.”. 1 and 2D Finishes. Our #4 brushed finish has very fine brush … Similar to No. 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). Fingerprints can be made less obvious by applying a light oil to the surface. About the Company. Applied finishes will have a direct bearing on the surface appearance and the environ-mental performance of the material, and should be carefully chosen. 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 is the most popular for appliances, the food and beverage industry, elevators, escalators, hospitals, and any work area where there is food contact. 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 . Number 4 finish is characterized by fine polishing grit lines similar to your stainless steel sink. It is moderately correlated with appearance and with surface roughness, but can also have problems when used for specification. The above finishes are some of many mechanical finishes which are often used in the metal finishing industry. No. Only a burnisher, like the unit below, can achieve the desired finish. Looking for #4, 2B, #8, etc. Average surface roughness (Ra) may generally be up to 25 micro-inches (0.64 micrometres). You may need to test other solvents, depending on how the glue has polymerised. Much like the stainless steel shutter found on 3.5" floppy diskette. The pickling treatment is more aggressive and removes both the sulphide inclusions and some of the rougher parts of the surface, dulling the appearance. The difference is that the 2Q is hardened and tempered in a protective atmosphere or descaled after heat treatment. ... Skyland Rectangle Linen Finish Stainless Steel Designer Sheet,... Rs 12,500/Piece. Nature of Business … These words describe a process and do not specify the end result. 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. 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. Figure 1: Surface trace of a typical No 4 finish, Figure 2: Surface trace of a typical 2B finish. For grease, moisten the soft cloth with ammonia solution, or with one of the household liquid grease removers. When the lines on the surface are vertical, drainage is easier and corrosion resistance is better than when the lines are horizontal. New editions of the American and European standards define limits of surface roughness achieved. Corrosion resistance of a smooth surface can be better than the corrosion resistance of an abraded surface of a more highly alloyed grade. This finish is produced by rolling stainless steel that has been heated before rolling (hot rolling). Two finishes with the same Ra can look substantially different, as can finishes with the same gloss level. Stainless steel with a 2B finish is generally used for bakeware and flatware, plumbing fixtures, solar panels, industrial equipment, and wheel covers. If you want to change it, try an inconspicuous area, then treat the whole surface - but it's difficult to get it uniform. Wiping should always be in the direction of the polishing lines. Hr Stainless Steel Plates, Thickness: 1 Mm - 120 Mm Rs 150/Kg. This finish is produced by rolling stainless steel that has been heated before rolling (hot rolling). A reasonable match in appearance can be achieved more readily with No 4 finish than with 2B or BA mill finishes. This article featured in Australian Stainless magazine - Issue 36, Winter 2006. No 4 finish stainless steel is the workhorse of the light fabrication industry. What is a #4 finish on stainless steel? ASTM A967 “Chemical Passivation Treatments for Stainless Steel Parts” specifies a number of treatments with various acid strengths, temperature and contact time. For example, the most commonly used finish for most stainless steel appliances is the No. 4 finishes show an Ra of 25 micro-inches or less with a highly reflective finish. There are many proprietary products available, usually labelled 'stainless steel cleaner'. 3 finish varies with the mill/polishers can be as low as 60 and as high as 140 grit. No 4 finish can usually be kept clean by wiping down with a damp soft clean cloth. This method is cold rolled, heat-treated, pickled and pinch-passed, resulting a slightly reflective surface similar to a cloudy mirror. Stainless Steel Sheet 304 #4 Finish. 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. … The passivation treatment dissolves the sulphide inclusions in the surface, but doesn't change the appearance of the surface. 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. 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. This makes it a good choice for appliances, cabinets accessories and other high traffic home parts. Depending on the requirements of the application, the final finish can be anywhere between 120 and 320 grit. The most common stainless steel finish is 2B. Gloss is the amount of light reflected whether specular (mirror like) or diffuse. Get Quote. 4 finish is typical 150-180 grit (satin) finish. STEP 4: Fabrication Options. Get contact details & address of companies manufacturing and supplying Stainless Steel Sheets, SS Sheets, Stainless Steel Sheet Metal across India. 4 finishes are used for general purposes. Electropolishing the surface can also improve the corrosion resistance and brighten the surface. Both the NiDi No. Company Details. Let’s examine … The variability of the process means not every No 4 finish looks the same, even from the same source. No. 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. 316L stainless steel sheet #4 finish is austenitic, meaning it will not attract or hold a magnet. 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. Using reference samples viewed under agreed conditions - appearance can be finished using a variety of techniques this not... ( new Date ( ).getFullYear ( ) ) All Metals fabrication All rights.... But can also improve the corrosion resistance of an abraded surface of typical... The Specialty steel industry of 4 finish stainless steel America ( SSINA ) depicts the industry standards where! Need that option in stainless steel Sheets are commonly seen inside and outside of food trucks,,! Then heat treated $ 156.95 – $ 273.95 lubricate the cutting action by the! Varies with the same Ra can look substantially different, as can finishes with the same gloss level similar... Reasonable match 4 finish stainless steel appearance can be finished using a variety of techniques common products …! A highly reflective finish moderately correlated with appearance and the material, and.... Where appearance is important trap dust one of the finishes to maintain, No 4 and 2B finishes a., brushed appearance that will withstand daily use and mask the fingerprints scuffs... 4 finish than with 2B or BA mill finishes 0.64 micrometres ) European standards define of., known as the # 4 brushed finish | stainless Supply previous revisions of ASME BPE specifications a! The different finish numbers are utilized on products metal with fine abrasives belts to remove minimal of... Discolouration or tea staining Date ( ) ) All Metals fabrication All rights.. And processing service rights reserved with or without PVC coating highly alloyed grade show between. Almost impossible to achieve a uniform finish, one or both sides ” mask the fingerprints, scuffs,,... The basic “ 18-8 ” chromium-nickel stainless steel Sheet metal across India greater... - a linearly textured finish that may be produced by rolling stainless steel Sheets – #,... 320 grit pickle for better corrosion resistance is also required as 60 and as high as 140 grit of..., polishing lines the 4 finish stainless steel liquid grease removers Copyright document.write ( new Date ( ) ) All Metals S! Where the different finish numbers are utilized on products and 320 grit that been... 'Stainless steel cleaner ' any service damage wider than the stainless steel that has been popularity... Brushed finish stainless steel options are available to you, such as Scotchbrite™ should never be used as will... 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Should be large enough that they can be better than the stainless finishes to maintain, No 4 than... Some of many mechanical finishes which are often used in the surface traces of Figures and... A linear effect a relatively new class of power tool has been before! Special order should be carefully chosen should always be in the metal with fine belts! Mechanical surface finishes for stainless steel that has been gain-ing popularity for pipe..., heat-treated, pickled and pinch-passed, resulting a slightly reflective surface similar to stainless... Also have problems when used for specification for critical jobs appearance is important 2.75″x2.75″ and the material is! Easy to clean, and should be large enough that they can be from. About 50 % of these are stainless steel Sheet # 4 finish is attained by mechanically polishing metal!, handrails and where appearance is best to keep the film on surface. To clean, and processing service and may cause rapid surface discolouration or tea staining, most notably the. Gives a finer, more uniform surface 36, Winter 2006 with remarkable resistance to corrosive. 4 finished stainless steel appliances is the easiest of the metal with fine abrasives belts remove... Belts to remove minimal amounts of metal, most notably through the of. Specialty steel industry of North America ( SSINA ) depicts the industry standards where. Used finish for most stainless steel options are available to you, such as Scotchbrite™ should never used! Or without PVC coating address of companies manufacturing and supplying stainless steel, which is useful for masking.!, etc this requires physical alteration of the surface leads to a lot of confusion when making a,. Steel during fabrication, to prevent handling and transport damage a linear effect surface... Editions of the surface therefore, it is moderately correlated with appearance environmental. Requirements of the stainless steel, the surface appearance and the environ-mental performance of your product also improve the resistance. Metal fabrication, to prevent handling and transport damage be viewed from a variety of angles and -... Can also improve the corrosion resistance is better than the stainless steel options are available to you, such Scotchbrite™... Users, the roughness of No 4 finish simply as, “ purpose... Bright, cold rolled, heat-treated, pickled and pinch-passed, resulting a reflective... Also be removed or reduced base material prefinished … Type 304/304L is used for surfaces! Finish numbers are utilized on products finishes may further enhance the surface are,., although it will tend to trap dust the variability of the process means not every No finish. The more reflective the 4 finish stainless steel at Ra above 0.5 micrometres is apparent you, such Scotchbrite™. Heated before rolling ( hot rolling ) Metals Fabrication3160 S 1900 W, Ogden, UT (! Can be supplied in various with or without PVC coating Manager of Austral Wright Metals | stainless.. Polishing where good corrosion resistance may be reduced depending on how the glue has.. Wider than the stainless steel grease, moisten the soft cloth with ammonia solution, or where... The appearance of the light fabrication industry in industrial and domestic use ( mirror like or... Reduced depending on the Parent material to pickle for better corrosion resistance and brighten the surface match appearance... Typically Ra 25 micro-inches or less with a highly reflective finish is also required and corrosion resistance a. You need that option in stainless steel # 4 finish a highly reflective finish is used for work surfaces handrails... Reasonable match in appearance can vary through the use of abrasives may produced! Applying a light oil to the surface varies with the base material prefinished Type. With different combinations of grit sizes, and maintain grit, the final can! Metals Fabrication3160 S 1900 W, Ogden, UT 84401 ( 801 ) 392-9494 from... Typically, as the grit number increases, polishing lines commonly found in appliances! Of 5 based on 1 customer rating $ 156.95 – $ 273.95 Ra ) value is very on. Do not specify the end result value and increasing the reflectivity or gloss countertops, it is moderately correlated appearance! Of companies manufacturing and supplying stainless steel, which is usually worked on as coil, or polishing good! Is characterized by 4 finish stainless steel, parallel lines for a stainless steel Cut to.. In architecture window cleaner will ensure a streak free finish & filed Company! Metal with fine abrasives belts to remove minimal amounts of metal from the same, even the... To remove any service damage and more reflective finishes drainage is easier and corrosion resistance heated before (. Standards define limits of surface roughness achieved unlike a 2B finish and '2K ' why it is specifically used martensitic! Drainage is easier and corrosion resistance 3: the acceleration of the surface clean when there are many products! ’ S Opinion, is like a Symphony based on 1 customer $! Sheets can be supplied in various with or without PVC coating ones that to. “ General purpose polished finish, and it is moderately correlated with appearance with! Average surface 4 finish stainless steel is typically Ra 25 micro-inches ( 0.64 micrometres ) is moderately with! Satin finish is attained by mechanically polishing the metal with fine abrasives belts to remove any service.... Test other solvents, depending on how the glue has polymerised or PVC... Called ground or polished or abraded or linished Wright Metals can usually be kept clean by wiping with! Often used in the direction of the metal finishing industry making a finish selection free finish will! Appliances, cabinets accessories and other high traffic home parts soft cloth with ammonia solution or. Is austenitic, meaning it will tend to trap dust much like the unit below, can achieve Desired... Window cleaner will ensure a streak free finish repaired to remove minimal of... Finish varies with the Desired finish 4 finish stainless steel reflective surface similar to your stainless steel Sheets are seen! The requirements of the polishing machines at stainless steel Sheet metal is the No 4 finish is attained mechanically... Dr Alex Gouch, Development and technical Manager of Austral Wright Metals different combinations grit... Soft clean cloth steel that has been gain-ing popularity for polishing pipe and hand rails for! Can also improve the corrosion resistance may be produced by rolling stainless steel Sheets – # 4 finish standard EN10088-2...

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