904l stainless steel sheet is a superaustenitic stainless steel that is created for moderate to high corrosion resistance in a wide range of environments. The mixture of chromium and nickel content, with the additions of molybdenum and copper provides excellent corrosion resistance.Due to nickel 25% and molybdenum 4.5%, ASTM B625 UNS N08904 provides good chloride stress corrosion cracking resistance, pitting and general corrosion resistance which are superior to 316L and 317L. It is develop to out-break environments containing dilute sulphuric acids. 904l stainless steel plate has good resistance to inorganic acids such as hot phosphoric acid. It can be easily welded and processed by standard fabrication process. ss 904l plate is quite ductile and can be easily formed. The addition of molybdenum and nitrogen provides more powerful processing equipment and it may be necessary when compared to the standard 304/304L grades.
Standard Specification Of SS 904L Plate
| Stainless Steel 904l Grade Plate Thickness | 0.3 to 1200 mm or as required |
|---|---|
| SS 904l Grade Plate Process | Hot/ Cold Rolled |
| Type | Plate, Sheet, Strip, Coils, Foils, Flats, Clad Plate, Plain Sheet, Rolling Sheet, Rolling Plate, Flat Shim, Flat Sheet, Shim Sheet, Rolls, Blank (Circle), sheared, annealed, soft annealed, descaled, tread plate, Checker Plate |
| 904l Stainless Steel Plate Length | 0-12mm or as required |
| 904l SS Plate Width | 0-2500mm or as required |
| Test | TUV, SGS testing, UT etc |
| AISI 904l Stainless Steel Plate surface | No.1, No. 2D, No. 2B, BA, No.3, No.4, hairline, No.6, No.7, 2B, 2D, BA NO(8), Hot rolled plate (HR), SATIN, No.1 finish hot rolled, Cold rolled sheet (CR), 1D, brush, mirror etc. |
ASTM B625 UNS N08904 Coil Composition Chart
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | Cu |
| SS 904L | 0.020 max | 2 max | 1.00 max | 0.040 max | 0.030 max | 19.00 – 23.00 | 4.00 – 5.00 max | 23.00 – 28.00 | 1.00 – 2.00 |
Mechanical Characteristics of Astm A240 Type 904l Plate
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 7.95 g/cm3 | 1350 °C (2460 °F) | Psi – 71000 , MPa – 490 | Psi – 32000 , MPa – 220 | 35 % |
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