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ASTM A202 Grade B is a chromium-manganese-silicon low-alloy steel tailored for high-pressure, medium-temperature pressure vessel applications.2026-04-30
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ASTM A202 Grade A is a critical chromium-manganese-silicon low-alloy steel plate specifically designed for welded pressure vessels and boilers operating at medium temperatures.2026-04-30
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ASTM A202 Pressure Vessel Steel Material and Grades:
Alloy System: **Chromium-Manganese-Silicon (Cr-Mn-Si)** Low-Alloy Heat-Resistant Steel2026-04-17 -
ASTM A204/A204M Grade B molybdenum alloy steel plates for pressure vessels feature superior chemical composition and mechanical properties compared to Grade A2026-04-10
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As a molybdenum-alloy steel plate for pressure vessels under the ASTM A204/A204M standard, A204 Gr.A is a low-alloy, high-strength material specifically designed for service conditions involving moderate temperatures (≤400°C) and moderate-to-high pressure2026-03-31
ASTM A709 Grade 50 steel plate for bridge
ASTM A709 Grade 50 steel plate is used in the "as supplied" condition. Other grades of steel covered by this specification may require heat treatment at 1700 F and water quench followed by tempering, but that is not required for Grade 50.ASTM A709 Grade 50 steel plate may be cold worked by conventional methods as it has good ductility.
Mechanical Properties of ASTM A709 Grade 50 steel plate:
Tensile: 65 KSI min
Yield: 50 KSI min
Elongation: 16% min in 8” 19% min in 2”
Size of ASTM A709 Grade 50 steel plate for bridge:
Thickness: 4.5-200mm
Width: 1600-4000mm
Length: 3000-18000mm
A709 Grade 50 steel plate for bridge have a higher strength, toughness and bear the load and impact of locomotives and vehicles, and have a good anti-fatigue, a certain low-temperature toughness and resistance to atmospheric corrosion.