What is the chemical composition of of A203GrE steel?

A203GrE steel plate belongs to ultra-low temperature container plate. A203Gr has good impact toughness and mechanical properties in low temperature environment, and is usually used in low temperature environment of -70～-101℃ (the tempered state can reach -107℃).

Chemical composition(%) of A203GrE steel

Material	Thick, mm	C	Si	Mn	P	S	Ni
SA203GrE	≤50	≤0.20	0.15-0.40	≤0.70	≤0.025	≤0.025	3.25-3.75
	＞50-100	≤0.23	0.15-0.40	≤0.80	≤0.025	≤0.025	3.25-3.75
	＞100	-	0.15-0.40	≤0.80	≤0.025	≤0.025	3.25-3.75

 
 
Delivery condition of A203GrE steel plates: Normalizing, normalizing and tempering or quenching and tempering treatment (quenching + tempering)
 
Application range of A203GrE steel
A203GrE steel plate is widely used in the production and processing of equipment in the fields of cryogenic separation processing, air separation, and liquefied gas storage. In recent years, the large-scale low-temperature equipment such as CO2 absorption towers, H2S absorption towers, H2S concentration towers, methanol scrubbers, etc. in domestic coal chemical projects have been manufactured with a large number of such materials. The maximum thickness currently used is 110mm.