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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 A204-A alloy steel sheet for pressure vessel application
ASTM A204-A alloy steel sheet for pressure vessel application is a kind of Mo-alloy steel material used to fabric high temperature pressure vessels. A204 this property is based on it's Mo composition. ASTM A-204 has three grades or levels-- Grade A/B/C. ASTM A204-A alloy steel sheet for pressure vessel application specification covers molybdenum alloy, intended particularly of welded boilers and others pressure vessels steel plate in A204 Gr. A,A204 Gr .B and A204 Gr .C.
ASTM A204 Grade A is used in fabricators serving industry, especially in the oil, gas and chemical supply markets.
Supplementary Technology: HIC Test | NACE MR0175 | Z15 | Z25 | Z35 | S1 | S2 | S3 | S4.1
S5 | S6 | S7 | S8 | S9| S11 | S12 | S14 | S17
Chemical composition(%):
C:0.18-0.25 Si:0.13-0.45 Mn:0.90-0.98 P≤0.035 S≤0.035 Mo:0.45-0.60
Mechanical property:
Tensile strength,kis(MPa)65-85(450-585)
Yield strength,min,kis(MPa):37(255)
Elongation in 8 in.(200mm),min,%:19
Elongation in 2 in.(50mm),min,%:23
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