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SA387 Grade 12 Class 2 is a chromium-molybdenum alloy steel plate designed for welded pressure vessels and industrial boilers operating at elevated temperatures. It offers excellent high-temperature strength and resistance to hydrogen attack and corrosion. The material is typically supplied in normalized or normalized and tempered condition, ensuring good weldability and mechanical properties suitable for critical energy and chemical industry applications.
| Material Grade | ASME SA387/A387M / ASTM A387/A387M | Standard | ASME SA387/A387M / ASTM A387/A387M |
| Thickness Range | 3.5-200 mm | Width Range | 1000-3500 mm |
| Length Range | 6000-14000 mm | MOQ | 1 Ton |
| Lead Time | 15-30 days | Port of Shipment | Shanghai / Tianjin / Qingdao |
| C | 0.04-0.17 | Si | 0.13-0.45 |
| Mn | 0.35-0.73 | P | ≤0.035 |
| S | ≤0.035 | Cr | 0.74-1.21 |
| Mo | 0.40-0.65 | Yield Strength (t≤50mm) | ≥275 MPa |
| Tensile Strength | 450-585 MPa | Elongation (t≤50mm) | ≥22% |
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