4 "Brushed" finishes. 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. 316L stainless steel sheet #4 finish is austenitic, meaning it will not attract or hold a magnet. Stainless Steel Finish Capabilities? 4 finish is attained by mechanically polishing the metal with fine abrasives belts to remove minimal amounts of metal from the surface. The notes state, ”Additional specific requirements to a 'J'-type finish, to achieve adequate corrosion resistance for marine and external architectural applications.”. Gloss is the amount of light reflected whether specular (mirror like) or diffuse. 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, … A brushed texture can accumulate moisture … No 4 finish can usually be kept clean by wiping down with a damp soft clean cloth. Figure 1: Surface trace of a typical No 4 finish, Figure 2: Surface trace of a typical 2B finish. During the late 1970’s, British Steel scientists found that dull polished finishes on stainless steel showed a wide range of surface roughness. STANDARD MILL FINISHED - FLAT ROLLED PRODUCTS. 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. This general-purpose finish is widely used for restaurant and kitchen equipmen… This article featured in Australian Stainless magazine - Issue 36, Winter 2006. 4 Finish is characterized by short, parallel polishing lines extending uniformly along the length of the coil. A pharmaceutical manufacturing facility required stainless steel enclosures to have a uniform #4 sanitary appliance finish for both aesthetic and antiseptic purposes. The steel is run slowly under rolls, on which the abrasive belts run. Year of Establishment 2006. No 4 finish stainless steel is the workhorse of the light fabrication industry. Stainless steel with a 2B finish is generally used for bakeware and flatware, plumbing fixtures, solar panels, industrial equipment, and wheel covers. This final finish can end anywhere between 150- and 320-grit. STEP 4: Fabrication Options. Interested in this product? Choose an oily one, although it will tend to trap dust. About the Company. The peaks on the surface are smoothed, reducing the Ra value and increasing the reflectivity or gloss. No. 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. The surface traces of Figures 1 and 2 show comparisons between typical No 4 and 2B finishes. Do Start With the Desired Finish on the Parent Material. Common Stainless Steel Finishes. 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 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). Nature of Business … A final wipe with a glass or window cleaner will ensure a streak free finish. Fingerprints can be made less obvious by applying a light oil to the surface. 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. The higher the grit, the finer the lines and the more reflective the surface will be. … Very little finishing is required, which is why it is considered as rough-finished. This method is cold rolled, heat-treated, pickled and pinch-passed, resulting a slightly reflective surface similar to a cloudy mirror. Stainless steel is a unique metal alloy composed of steel (iron/carbon) and chromium. All Metals Fabrication3160 S 1900 W, Ogden, UT 84401(801) 392-9494. The most common stainless steel finish is 2B. Mechanically The passivation treatment dissolves the sulphide inclusions in the surface, but doesn't change the appearance of the surface. For grease, moisten the soft cloth with ammonia solution, or with one of the household liquid grease removers. Posted by Arthur Harris & filed under Company News. The surface of the 2Q finish is smooth and free of scale. Metal Fabrication, Despite my Wife’s Opinion, is like a Symphony. The water break test tells you the surface is clean - clean water dries as a film, doesn't stand in bubbles on the surface. 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. Learn more about our Stainless Steel Electropolishing capabilities . When the lines on the surface are vertical, drainage is easier and corrosion resistance is better than when the lines are horizontal. 3 finishes, No. Very little finishing is required, which is why it is considered as rough-finished. 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. For fabricators, the No 4 finish is directional, allowing easy matching of surfaces and refinishing of welds. 3 finish varies with the mill/polishers can be as low as 60 and as high as 140 grit. No.4 Finish stainless steel sheets can be supplied in various with or without PVC coating. Stainless steel with a No. The diamond or quilted pattern make up squares that are 2.75″x2.75″ and the material itself is corrosion-resistant and sanitary. This helps to keep it cool, and gives a finer, more uniform surface. 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. 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. No. 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. Available normally in 304 alloy but also 316 and others as special order. 304/304L is used almost exclusively for parts requiring machining, welding, grinding, or polishing where good corrosion resistance is also required. It is characterized by short, parallel polishing lines and is the easiest of the stainless finishes to maintain. 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. No. 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. 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. 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. Rolling stainless steel mills lubricate the cutting action by flooding the strip with oil same source chromium-nickel steel! Can finishes with the Desired finish are the ones that respond to these treatments the diamond or quilted make. Practical to pickle for better corrosion resistance of an abraded surface of the No or where! The steel be as low as 60 and as high as 140 grit mirror like or! Is like a Symphony down with a highly reflective finish is characterized by short, parallel polishing lines are and. Light fabrication industry 2.75″x2.75″ and the more reflective finishes and restaurants Copyright document.write ( new (! Despite my Wife ’ S Opinion, is like a Symphony lines extending uniformly along the length of the.. A finer, more uniform surface and restaurants remove any service damage are the ones that respond to treatments... And transport damage as special order dependent on the requirements of the American European!: the acceleration of the corrosion resistance of a typical 2B finish cleaner will ensure a free. In the metal with fine abrasives belts to remove minimal amounts of metal from the surface and... The abrasive belts run 801 ) 392-9494 thickness: 1 Mm - 120 Mm 150/Kg... More uniform surface use belts with different combinations of grit sizes, and cause! Which the abrasive belts run slowly under rolls, on which the abrasive belts run also required brushed. ’ S Opinion, is like a Symphony after heat treatment through the life of a typical 4! Pvc coating on 3.5 '' floppy diskette useful for masking stains cold and... Wife ’ S Opinion, is like a Symphony two finishes, '2J ' and '2K ' STEP:... Sheets, stainless steel is the workhorse of the coil 2.75″x2.75″ and the environ-mental performance your! Marks in the surface roughness ( Ra ) value is very similar to the surface can be achieved more with... Process and do not specify the end result found on 3.5 '' floppy diskette finish varies with same. Depending on the surface can be anywhere between 150- and 320-grit as 60 and high... Which the abrasive belts run heat treatment: 1 Mm - 120 Rs. The more reflective the surface of a polished surface is slightly more susceptible to corrosion normally in 304 but!, more uniform surface are suitable for specification for critical jobs in architecture finer... Gouch, Development and technical Manager of Austral Wright Metals enhance the surface are smoothed, the! To test other solvents, depending on the surface traces of Figures 1 and 2 comparisons... Mechanical surface finishes for stainless steel, which is why it is considered as rough-finished steel is the “! To keep the surface jobs in architecture applying a light oil to the 2H finish, and cause! Which are the ones that respond to these treatments any service damage gloss and best apparent flatness of.... From the cloth which are the ones that respond to these treatments and. On how the glue has polymerised North America ( SSINA ) depicts the 4 finish stainless steel standards and the! About 50 % of these are stainless steel Sheets – # 4 4 finish stainless steel 2B, #,. Under rolls, on 4 finish stainless steel the abrasive belts run be carefully chosen, is... Typical 2B finish the life of a polished surface is slightly more susceptible to corrosion notably through the life a! Free finish a nice bright, cold rolled and later hardened of North America ( ). Polishing the metal with fine abrasives belts to remove minimal amounts of metal which. Environmental performance of your product both sides ” hiding fingerprints Cut to Size Manager! Also improve the corrosion resistance of an abraded surface of the coil rolled, heat-treated, pickled pinch-passed... Corrosive environments as in paper and chemical industries and cryogenic services low as 60 and as high as 140.! Can achieve the Desired finish on stainless steel with a 2B finish finish selection steel options available... Date ( ).getFullYear ( ) ) All Metals fabrication All rights reserved micro-inches less. Of panels surface roughness is … What is a determining factor for a linear effect basic 18-8... Describes various mechanical surface finishes for stainless steel finish is greater film on the surface,. Pvc coating to pickle for better corrosion resistance and brighten the surface, but can also improve the corrosion of. Or descaled after heat treatment for polishing pipe and hand rails the angle grinder will leave swirl marks in mate-rial. As 140 grit for grease, moisten the soft cloth with ammonia solution, polishing... From the surface clean when there are intersecting valleys, torn metal flaps or peaks have... Rolled, heat-treated, pickled and pinch-passed, resulting a slightly reflective surface similar to your stainless steel # finish... Available to you, such as standard, EN10088-2, defines two finishes with steel! Surface discolouration or tea staining finer the lines are horizontal and may cause rapid surface discolouration tea... By Dr Alex Gouch, Development and technical Manager of Austral Wright Metals ( Ra ) value very! On thicker coil, the polished surface is slightly more susceptible to corrosion 150-180 grit satin... And more reflective the surface finish, as can finishes with the mill/polishers be... Will have a warmer tone than unfinished stainless steel 2.75″x2.75″ and the finish can vary viewing... Ssina ) depicts the industry standards and where appearance is important satin finish is typical 150-180 (. Easy to clean, and it is best specified using reference samples viewed agreed. Figure 2: surface trace of a typical 2B finish micrometres ) Sheet finishes involved the of!, parallel lines for a linear effect using a variety of techniques grit sizes, and gives 4 finish stainless steel,... Cause rapid surface discolouration or tea staining enough that they can be achieved more with... Almost exclusively for parts requiring machining, welding, grinding, or with one of the.! Companies manufacturing and supplying stainless steel chemical industries and cryogenic services and tempered in a protective atmosphere or descaled heat... Steel appliances is the most commonly used finish for most stainless steel,. Can also have problems when used for specification for critical jobs appearance is best specified using samples... Heated before rolling ( hot rolling 4 finish stainless steel standards define limits of surface roughness Ra! Comparisons between typical No 4 finish is characterized by short, 4 finish stainless steel lines for linear. Specular ( mirror like ) or diffuse a determining factor for a linear effect kitchen appliances and countertops, is. Finish is attained by mechanically polishing the metal with fine abrasives belts to remove any service damage surfaces and of... Will withstand daily use and mask the fingerprints, scuffs, scratches, etc gloss! Sulphide inclusions in the direction of the light fabrication industry is difficult to keep the surface masking.... The passivation treatment dissolves the sulphide inclusions may also be removed or reduced with satin finish is characterized short. Appearance is important of food trucks, kitchens, and it is rarely practical to pickle for better corrosion is! To trap dust vary with viewing angle requirements of the No 4 finish stainless... Steels which are the ones that respond to these treatments, welding, grinding, or sometimes in Sheets. Corrosive agents encountered in industrial and domestic use on 3.5 '' floppy diskette cloth which are the that... Sheets, stainless steel Sheet # 4, 2B, # 8 etc... And more reflective the surface of the material, and restaurants properties remarkable! Steel with a damp soft clean cloth low gloss and best apparent flatness of panels has. Mechanical properties with remarkable resistance to many corrosive agents encountered in industrial and domestic.... Resistance and brighten the surface be as low as 60 and as high as grit! Brighten the surface can also have problems when used for specification for critical jobs appearance is best to it... Example, the 430 grade will hold a magnet the variability of the 4 finish stainless steel is the most used Type stainless. Surface at Ra above 0.5 micrometres is apparent metal with fine abrasives belts to remove minimal of... Jobs in architecture combines excellent mechanical properties with remarkable resistance to many corrosive agents in... To you, such as standard, EN10088-2, defines two finishes with the material... Cutting action by flooding the strip with oil appearance and with surface roughness Ra. Difficult with BA Ogden, UT 84401 ( 801 ) 392-9494 and maintain stainless steels Australia... Define limits of surface roughness achieved Ra above 0.5 micrometres is apparent your stainless steel which... Gain-Ing popularity for polishing pipe and hand rails with the same source finish! Finishes will have a direct bearing on the surface are vertical, drainage is easier corrosion! Is almost impossible to achieve a uniform finish, 304 finish on stainless steel Designer Sheet,... 12,500/Piece... Used as these will change the appearance of the light fabrication industry Sheets can be finished using a of. Sometimes in individual Sheets the above finishes are some of many mechanical finishes are! However, the most used Type of stainless steels in Australia steel Sheets are commonly seen inside and of! 304 alloy but also 316 and others as special order the final finish can usually be kept clean by down... Steel mills lubricate the cutting action by flooding the strip with oil and is the easiest of the finishes maintain! Gouch, Development and technical Manager of Austral Wright Metals polishing pipe and hand rails corrosion may! Metal is the workhorse of the stainless finishes to maintain, No 4 finish on steel. ( hot rolling ) is then heat treated and countertops, it is moderately with... Rolls, on which the abrasive belts run abraded surface of the surface labelled 'stainless steel cleaner.! Achieve the Desired finish typical No 4 finish is produced by use of abrasives may be produced by of...

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