ASTM A203 Grade B is a kind of Ni-alloy steel material used to fabric high temperature pressure vessels. ASTM A203 Grade B this property is based on it's Ni composition.A203 Grade B is used in fabricators serving industry, especially in the oil, gas and chemical supply markets.
Material: Nickel-alloy steel plate.
Primary application: Welded pressure vessels, particularly those for moderate or low-temperature service.
Key properties: Excellent low-temperature toughness and impact resistance.
Nickel content: Approximately 2.25%.
Heat treatment: Typically normalized and shall be killed steel with fine grain size requirements.
Common uses: Oil, gas, and chemical industry equipment, such as CO2 and H2S absorption towers.
Thickness: Maximum thickness is limited by the ability to meet specified mechanical properties, but typically up to 150mm (6 inches).
Standard: ASTM A203/A203M.
Chemical composition for A203 Grade B steel plate (Heat Analysis Max%)
| Main chemical elements composition of A203 Grade B steel plate | ||||||
| C | P | S | ||||
| T<=50 | 0.21 | 0.15-0.40 | 0.70 | 0.035 | 0.035 | 2.10-2.50 |
| 50 | 0.24 | 0.80 | ||||
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