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Home > ASTM > ASTM A738/A738M Hot Rolled Boiler Plate and Pressure Vessel Plate

ASTM A738/A738M Hot Rolled Boiler Plate and Pressure Vessel Plate

ASTM A738 is a kind of C-Mn-Si steel plates material used to fabric middle or low temperature pressure vessels. Obviously, A738 is divided into three grades or levels :A738 Gr. A, A738 Gr. B, A738 Gr. C .In order to meet the property requirement of ASTM A738/A738M standard, this material must be done heat-treatment.

Standard: ASTM A738/A738M
Steel Grade : A738 Grade A, A738 Grade B, A738 Grade C
Thickness :3mm -500mm
Width :1000mm-4000mm
Length :1000mm-18000mm
MOQ: 1 PC
Delivery time : Promptly ( Stock) or 10-40 days (Production)
Stock : Available
MTC: Available
Payment Term : T/T or L/C At sight .

ASTM A738 steel chemical composition (%):

Compostion				A738 Grade A	A738 Grade B	A738 Grade C
C ≤ ①				0.24	0.20	0.20
Mn	Heat analyse		Thickness ≤65mm	≤1.50	0.90~1.50	≤1.50
	Heat analyse		Thickness＞65mm	≤1.60	0.90~1.60	≤1.60
	Product analyse		Thickness ≤65mm	≤1.62	0.84~1.62	≤1.62
	Product analyse		Thickness＞65mm	≤1.72	0.84~1.72	≤1.72
P ≤ ①				0.035	0.030	0.025
S ≤ ①				0.035	0.030	0.025
Si	Heat analyse			0.15~0.50	0.15~0.55	0.15~0.50
Si	Product analyse			0.13~0.55	0.13~0.60	0.13~0.55
Cu ≤	Heat analyse			0.35	0.35	0.35
Cu ≤	Product analyse			0.38	0.38	0.38
Ni ≤	Heat analyse			0.50	0.60	0.50
Ni ≤	Product analyse			0.53	0.63	0.53
Cr ≤	Heat analyse			0.25	0.30	0.25
Cr ≤	Product analyse			0.29	0.34	0.29
Mo ≤	Heat analyse	Thickness ≤40mm		0.08	0.20	0.08
	Heat analyse	Thickness＞40mm		0.08	0.30	0.08
	Product analyse	Thickness ≤40mm		0.09	0.21	0.09
	Product analyse	Thickness＞40mm		0.09	0.33	0.09
V ≤	Heat analyse			0.07 ②	0.07	0.05
V ≤	Product analyse			0.08 ②	0.08	0.05
Nb ≤	Heat analyse			0.04 ②	0.04	③
Nb ≤	Product analyse			0.05 ②	0.05	③
Nb+V ≤	Heat analyse			0.08 ②	0.08	③
Nb+V ≤	Product analyse			0.10 ②	0.10	③

① means be suitable for both heat analyse and product analyse
② After agreement,can add V and Nb
③ For Grade C, Nb is not the required composition.

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