What is ASTM B625 904L Stainless Steel Plate?
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What is ASTM B625 904L Stainless Steel Plate?
ASTM B625 904L Stainless Steel Plate is a high-alloy, low-carbon austenitic stainless steel (UNS N08904) specified by the ASTM B625 standard for chromium-nickel alloys. It is known for its excellent resistance to corrosion, including in sulfuric acid environments, excellent formability, toughness, and weldability. The combination of high chromium, nickel, and molybdenum content makes it suitable for demanding applications in chemical processing, heat exchangers, and pollution control equipment, where less alloyed stainless steels may fail.
Spec Chart of Stainless Steel 904L Plates
| Stainless Steel 1.4539 Plate Thickness | 0.3 to 1200 mm or as required |
|---|---|
| Alloy 904L Plate Process | Hot/ Cold Rolled |
| Stainless Steel 904L Plate Length | 0-12mm or as required |
| 904L Steel Plate Width | 0-2500mm or as required |
| SS 904L Plate surface |
No.1, No. 2D, No. 2B, BA, No.3, No.4, No.6, No.7, 2B, 2D, BA NO(8), Cold rolled sheet (CR), Hot rolled plate (HR), SATIN (Met with Plastic Coated), No.1 finish hot rolled Stainless Steel 904L Plate, 1D, 2B, No.4, BA, 8K, satin, hairline, brush, mirror etc.
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Mechanical Analysis of Stainless Steel 904L Sheet
| Grade | Density (kg/m3) | Elastic Modulus (GPa) | Mean Coefficient of Thermal Expansion (m/m/0C) | Thermal Conductivity (W/m.K) | Specific Heat 0-1000C (J/kg.K) | Electrical Resistivity (n.m) | |||
| 0-1000C | 0-3150C | 0-5380C | at 1000C | at 5000C | |||||
| 904L | 8000 | 200 | 15.0 | – | – | 13.0 | – | 500 | 850 |
Chemical Material Composition of 904L SS Plate/ Sheet
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
| Rockwell B (HR B) max | Brinell (HB) max | ||||
| 904L | 490 | 220 | 35 | 70-90 typical | – |
Mean Coefficient of Thermal Expansion of SS 904L Plate
| Temperature Range | |||
|---|---|---|---|
| °F | °C | in/in °F | cm/cm °C |
| 68-212 | 20-100 | 8.5 x 10-6 | 15.3 x 10-6 |
What Is ASTM B625 904L Stainless Steel Plate Used For?
Ideal for chemical tanks, heat exchangers, marine equipment, and seawater piping.
Can 904L plates be welded or fabricated easily?
Yes, 904L plates are weldable, formable, and suitable for complex fabrication, though preheating may be recommended for thick plates.
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