A203 is a low nickel alloy steel, including five grades A, B, C, D, E and F. The nominal nickel content of D, E and F is 3.5%, commonly known as 3.5Ni steel.
Low nickel alloy steel A203E delivery status: normalized, normalized + tempered, or quenched and tempered.
A203E steel smelting method: EAF + external refining + vacuum degassing is adopted, and it should be fine grain killed steel.
Alloy steel A203E ultrasonic flaw detection: A203E steel plates shall be inspected one by one according to JB / T4730.3-2005, and the qualification level shall be indicated in the contract.
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