SA203GrD ultra-low temperature pressure vessel plate

SA203GrD steel plate belongs to ultra-low temperature container plate, SA203 is A low nickel alloy steel, including A, B, D, E, F five grades. The nominal nickel content of D, E and F is 3.5%, commonly known as 3.5Ni steel. SA203D/E/F has good impact toughness and mechanical properties under low temperature conditions, and is usually used in low temperature environments of -70 ~ -101℃ (the tempered state can reach -107℃).

SA203GrD steel plate belongs to ultra-low temperature container plate, SA203 is a low nickel alloy steel, commonly known as 3.5Ni steel. Widely used in pressure vessels, heat exchangers, petrochemical equipment, tower, petrochemical and so on

The chemical composition of SA203-GR.D steel plate includes carbon, silicon, manganese, phosphorus, sulfur, nickel, copper, chromium and molybdenum. Specifically, it contains no more than 0.23% carbon, between 0.13% and 0.45% silicon, no more than 0.88% manganese, no more than 0.025% phosphorus, no more than 0.025% sulfur, between 3.18% and 3.82% nickel, about 1% copper, about 1% chromium, and about 0.2% molybdenum.

Alloying element carbon content (C) : 0.15% Max

Alloying element silicon content (Si) : 0.40% Max

Alloying element manganese content (Mn) : 0.70-0.80%

Alloying element phosphorus content (P) : 0.035% maximum

Alloying element sulfur content (S) : 0.035% Max

Nickel content (Ni) : 3.25-3.75%

Alloying element copper content (Cu) : 0.25% maximum

Alloying element chromium content (Cr) : 0.80-1.10%

Molybdenum content (Mo) : 0.45-0.60%