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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
AISI 4140 Low-Alloy High-Tensile Steel Plate
AISI 4140 Low-Alloy High-Tensile Steel Plate is a 1% chromium - molybdenum medium hardenability general purpose high tensile steel plate- generally supplied hardened and tempered in the tensile range of 850 - 1000 MPA (condition T).
Pre hardened and tempered AISI 4140 Low-Alloy High-Tensile Steel Plate can be further surface hardened by flame or induction hardening and by nitride.
Chemical Composition of the AISI 4140 Low-Alloy High-Tensile Steel Plate:
Min. % Max %
Carbon 0.36 0.44
Silicon 0.10 0.40
Manganese 0.65 1.10
Chromium 0.75 1.20
Molybdenum 0.15 0.35
Phosphorous 0 0.04
Sulphur 0 0.04
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