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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
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a387 grade 12 class 1 steel plate,a387 grade 12 class 1 steel plate supplier
a387 grade 12 class 1 steel plate is a kind of Cr-Mo-alloy steel, a387 grade 12 class 1 steel is designed for use in pressure vessels and heat exchangers where there is an elevated temperature. It is described as an alloyed high temperature pressure vessel steel.
a387 grade 12 class 1 steel plate specification:
Grade: a387 grade 12 class 1 Standard: ASTM A-387/A-387M
Length: 6000mm-12500mm, Thickness: 5mm -150mm, Wide: 1500mm-4500mm
a387 grade 12 class 1 steel equivalent material: UK 621gr.A,B
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a387 grade 12 class 1 steel chemical composition |
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Grade |
The Element Max (%) |
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|
C |
Si |
Mn |
P |
S |
Cr |
Mo |
|
|
a387 grade 12 class 1 |
0.04-0.17 |
0.13-0.45 |
0.35-0.73 |
0.035 |
0.035 |
0.74-1.21 |
0.40-0.65 |
Carbon Equivalent: Ceq = 【C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15】%
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Grade |
||||
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Thickness |
Yield |
Tensile |
Elongation |
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|
a387 grade 12 class 1 |
mm |
Min Mpa |
Mpa |
Min % |
|
t≦50 |
230 |
380-550 |
22 |
|
|
50<t≦200 |
- |
- |
18 |
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a387 grade 12 class 1 steel plate application:
a387 grade 12 class 1 steel plate is widely used in pressure vessel, boiler, storage tanks and heat exchanger in oil, gas project.
a387 grade 12 class 1 steel additional condition :
UT (Ultrasonic examination), AR(As Hot Rolled only), TMCP(Thermal Mechanical Control Processing), N(Normalized), Q+T(Quenched and Tempered), Z Direction Test(Z15, Z25, Z35), Charpy V-Notch Impact Test, HIC test, NDT, PWHT( Simulated Post Weld Heat Treatment), NACE0175, The Third Party Test (Such as SGS Test), Coated or Shot Blasting and Painting.
As a professional a387 grade 12 class 1 steel plate supplier in China, we keep more than 1000 tons A516 Grade60 steel in stock every month , any need in a387 grade 12 class 1 steel, please feel free to contact us!