SS 316L Matte (No. 4) Finish Stainless Steel Sheet
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SS 316L Matte (No. 4) Finish Stainless Steel Sheet Details
SS 316L Matte (No. 4) stainless steel plate is a low-carbon, molybdenum-containing stainless steel alloy that offers excellent corrosion resistance, especially in chloride environments. The No. 4 finish is a common, uniform, directional brushed or satin finish achieved by polishing with a 120-180 grit abrasive. Its refined appearance is resistant to fine scratches, making it ideal for applications such as architectural panels, kitchen equipment, and elevators.
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What is the No. 4 finish on stainless steel?
The No. 4 finish is a brushed finish achieved by polishing the surface of the stainless steel using a grit abrasive (typically around 150-180). The resulting polished surface is smooth, even, and slightly textured, giving the metal a unique appearance without being reflective.
Chemical Composition of AISI 316L / UNS S31603 / EN 1.4404 Stainless Steel (Weight %)
| Element | Content (Min - Max) |
|---|---|
| Nickel (Ni) | 10.00 - 14.00 |
| Iron (Fe) | Balance |
| Chromium (Cr) | 16.00 - 18.00 |
| Molybdenum (Mo) | 2.00 - 3.00 |
| Carbon (C) | ≤ 0.03 |
| Silicon (Si) | ≤ 0.75 |
| Manganese (Mn) | ≤ 2.00 |
| Phosphorus (P) | ≤ 0.045 |
| Sulfur (S) | ≤ 0.030 |
| Nitrogen (N) | ≤ 0.10 |
| Titanium (Ti) | – (Not Specified) |
Mechanical Properties of AISI 316L / UNS S31603 / EN 1.4404 Stainless Steel (No.4 Finish Sheets/Coils)
| Property | Value (Minimum unless specified) |
|---|---|
| Yield Strength (MPa) | ≥ 170 |
| Tensile Strength (MPa) | ≥ 485 |
| Elongation (%) | ≥ 40 |
| Hardness (Max) | Brinell: 217 / Rockwell B: 95 |
316L No. 4 Finish Stainless Steel Plate Features
Appearance: A smooth, refined, uniform surface with a noticeable directional "brushed" or satin texture.
Production: Polished using a belt or brush, typically 120-180 grit sandpaper, on a 2B finish.
Reflectivity: Lower reflectivity than a shiny (e.g., mirror) surface, but still aesthetically pleasing.
Practicality: The directional texture helps conceal minor scratches and imperfections.
Common Applications
The properties of 316L combined with the No. 4 finish make these plates suitable for:
Architectural: Wall panels, column cladding, storefronts, and interior finishes.
Food and Beverage: Kitchen equipment, refrigeration, and dairy processing equipment.
Transportation: Airport conveyor belts and train coaches.
Other: Elevators, escalators, hospital equipment, and electrical control panels.
Gnee Steel specializes in the production and sale of a wide range of stainless steel products, including 304, 316, 321, 904, 904L, 2205 Duplex, 2205 Duplex, and 316L stainless steel. Gnee Steel's products are widely used in the kitchen, aerospace, chemical, power, automotive, and nuclear energy sectors. We also provide custom stainless steel solutions tailored to customer needs. For stainless steel pricing or custom alloy solutions, please email ru@gneesteelgroup.com for a quote.
