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ASME SA387 GR.21 CL1 pressure vessel steel plate
ASME SA387 Grade 21 Class 1 is a chromium-molybdenum alloy steel plate primarily intended for welded boiler and pressure vessels designed for elevated temperature service. It contains approximately 3% Chromium and 1% Molybdenum, providing excellent high-temperature strength and corrosion resistance. Commonly used in the petrochemical and power generation industries.
ASTM: A387 Gr 21 Cl 1JIS: SBV21GB: 14Cr1MoR
MaterialASME SA387 / ASTM A387
Thickness5-200 mm
Width1500-3000 mm
Length6000-12000 mm
MOQ1 Ton
Lead Time15-25 days
PortShanghai / Tianjin / Qingdao
Response within 24 hours
In Stock — Ready to Ship
| Material Grade | ASME SA387 / ASTM A387 | Standard | ASME SA387 / ASTM A387 |
| Thickness Range | 5-200 mm | Width Range | 1500-3000 mm |
| Length Range | 6000-12000 mm | MOQ | 1 Ton |
| Lead Time | 15-25 days | Port of Shipment | Shanghai / Tianjin / Qingdao |
| C | ≤0.15 | Si | ≤0.50 |
| Mn | 0.40-0.75 | P | ≤0.035 |
| S | ≤0.035 | Cr | 2.63-3.37 |
| Mo | 0.85-1.15 | Yield Strength | ≥205 MPa |
| Tensile Strength | 415-585 MPa | Elongation | ≥18% |
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