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DIN EN10273

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Home > ASTM > ASTM A738 Grade B Hot Rolled Boiler Plate

ASTM A738 Grade B Hot Rolled Boiler Plate

ASTM A738 Grade B 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 ASTMSA-738/SA-738M standard, this material must be done heat-treatment.

Key words: A738 Grade B,ASTM A738 Grade B,A738 Grade B C-Mn-Si steel plates,A738 Grade B for fabric middle or low temperature pressure vessels,A738 Grade B Hot Rolled Boiler Plate.

ASTM A738 Grade B steel chemical composition (%) :

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

ASTM A738 Grade B steel mechanical properties :

Grade

Tensile strength

Ksi , [Mpa ]

Yield strength

Ksi , [Mpa ]

Elongation

In 2 in.[50mm],min,%

Grade B

85-102

[585-705]

[415]

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