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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
EN 10028-3 P 275 NL2 steel, EN 10028-3 P 275 NL2 steel hardness and heat treatment specification
EN 10028-3 P 275 NL2 steel is one kind of boiler and pressure vessel steel. EN 10028-3 P 275 NL2 steel is widely used in petroleum, chemical engineering, power plants, boilers and other industries for the production of the reactor, heat exchangers, separators, tank, gas tank, nuclear reactor pressure vessel, boiler, liquefied petroleum gas cylinders, Hydropower high-pressure pipes, turbine spiral case equipment and components.
EN 10028-3 P 275 NL2 steel hardness and heat treatment specification:
|
Annealing hardness |
Cold pull hardness |
Preheating temperature |
Quenching temperature |
Holding time |
Hardening medium |
Temper temperature |
After tempering hardness |
|
|
salt-bath furnace |
controlled atmosphere furnace |
|||||||
|
235 |
262 |
788 |
1191 |
1204 |
5~15 |
air cooling |
522 |
60 |
|
Steel plate/Sheet |
σb |
σs |
δ |
180 ° of cold bending test |
|
|
longitudinal |
horizontal |
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|
Hot-rolled/Cold rolling:5 - 150 |
520 |
415 |
16~18 |
2a |
3.5a |
|
Note: |
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