ASTM B625 904L Stainless Steel Plate Specification
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What Is ASTM B625?
ASTM B625 is the standard specification for nickel, nickel alloy, and high-alloy austenitic stainless steel plates, specifically including 904L (UNS N08904). This specification covers hot-rolled or cold-rolled plates intended for corrosion-resistant applications
| Standard | Material | UNS Number | EN Equivalent |
|---|---|---|---|
| ASTM B625 | 904L Stainless Steel | UNS N08904 | EN 1.4539 |
ASTM B625 904L Plate Chemical Composition
| Element | Content (%) |
|---|---|
| Carbon (C) | ≤ 0.020 |
| Chromium (Cr) | 19.0–23.0 |
| Nickel (Ni) | 23.0–28.0 |
| Molybdenum (Mo) | 4.0–5.0 |
| Copper (Cu) | 1.0–2.0 |
| Iron (Fe) | Balance |
| Manganese (Mn) | ≤ 2.0 |
| Silicon (Si) | ≤ 1.0 |
| Sulfur (S) | ≤ 0.035 |
| Phosphorus (P) | ≤ 0.040 |
904L plate mechanical properties
| Property | Value |
|---|---|
| Tensile Strength | ≥ 490 MPa (71 ksi) |
| Yield Strength (0.2% offset) | ≥ 220 MPa (32 ksi) |
| Elongation (min 2" gauge length) | ≥ 35% |
| Hardness (max) | 90 HRB (Rockwell B) |
904L stainless steel sheet and plate Dimensions & Tolerances
Thickness Range:
From 3.0 mm to 50 mm (custom thickness available)
Standard Width:
1000 mm / 1219 mm / 1500 mm / 2000 mm
Standard Length:
2000 mm / 2440 mm / 6000 mm (or as specified)
Tolerances:
As per ASTM A480/A480M (applies for dimensions, flatness, and finish)
Finish Options:
No.1 (Hot rolled, annealed & pickled)
2B (Cold rolled)
BA, Mirror, or custom-polished finishes available
1.4539 plate supplier:Delivery Conditions & Documentation
Condition: Solution annealed, pickled, or polished
NDT / QC Options: PMI test, ultrasonic, intergranular corrosion test
Certification:
ASTM B625 compliance
EN 10204 3.1 or 3.2 MTC
NACE MR0175 / ISO 15156 (on request)
904L Stainless Steel Plate.pdf
ASTM B625 vs A240
| Standard | Grade | Scope |
|---|---|---|
| ASTM B625 | UNS N08904 | Corrosion-resistant plate (904L) |
| ASTM A240 | 316L, 304, 904L | Chromium-nickel stainless plates |
| EN 10028-7 | 1.4539 (904L) | Flat products for pressure use |
| JIS G4304 | SUS890L / SUS904L | Japanese SS plate standards |
Need ASTM B625 Certified 904L Plates?
We supply ASTM B625-compliant 904L stainless steel plates with full certification, NDT testing, and surface finish customization. Available in stock or custom-cut sizes.
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