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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 4130 Alloy structural steel plate composition
AISI 4130 Alloy structural steel plate is oil production a widely used structural steel,and 4130 alloy stuctural steel plate has high hardenability. AISI4130 steel plate welding quality and latitude, particularly in the field of welding, the welding method can affect latitude, and process control of welding.
AISI 4130 stuctural steel plate contains chromium and molybdenum as strengthening agents. It has low carbon content, and hence it can be welded easily.
Chemical composition (%)
S: allow the residual content ≤0.035 P: allow the residual content ≤0.035 Cr: 0.80 ~ 1.10
Ni: to allow the residual content ≤0.030 Cu: to allow the residual content ≤0.030 Mo: 0.15 ~ 0.25
Mechanical Properties
Tensile strength σb (MPa): ≥930 (95)
Yield strength σs (MPa): ≥785 (80)
Elongation δ5 (%): ≥12
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