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Home > ASTM > ASTM A542 Grade C Class 3 alloy steel plates for pressure vessels

ASTM A542 Grade C Class 3 alloy steel plates for pressure vessels

SA542 Grade C Class 3 in the standard A-542/SA-542M is a kind of Mo-V alloy steel plates material used to fabric high temperature pressure vessels.A542 have Five grades or levels. They are : grade A, grade B, grade C, grade D, grade E .A542 Grade C Class 3 need to be done the (Quenching + Tempering ) heat-treatment to meet the property requirement in the standard ASTMA-542/SA-542M.

Key words:A542 Grade C Class 3,ASTM A542 Grade C Class 3，A542 Grade C Class 3 steel plate,ASTM A542 Grade C Class 3 high tensile alloy steel plates,ASTM A542 Grade C Class 3 for fabric high temperature pressure vessels

ASTMA542 Grade C Class 3 steel chemical composition

Composition		Grade B
C	Heat analyse	0.11~0.15
C	Product analyse	0.08~0.18
Mn	Heat analyse	0.30~0.60
Mn	Product analyse	0.25~0.66
P ≤	Heat analyse	0.025
P ≤	Product analyse	0.025
S ≤	Heat analyse	0.025
S ≤	Product analyse	0.025
Si ≤	Heat analyse	0.13
Si ≤	Product analyse	0.13
Ni ≤	Heat analyse	0.25
Ni ≤	Product analyse	0.28
Cr	Heat analyse	2.75~3.25
Cr	Product analyse	2.63~3.37
Mo	Heat analyse	0.90~1.10
Mo	Product analyse	0.85~1.15
B	Heat analyse	0.001-0.003
B	Product analyse	-
V	Heat analyse	0.20-0.30
V	Product analyse	0.18-0.33
Ti	Heat analyse	0.015-0.035
Ti	Product analyse	0.005-0.045
Ca②		-
Ca②		-
Cu≤	Heat analyse	0.25
Cu≤	Product analyse	0.28
Nb	Heat analyse	-
Nb	Product analyse	-

Note : ① In A 542/A 542M-82 standard and the earlier standard, the steel plates whose thickness ≤ 125mm,C must be ≤ 0.15%

② Ca can be replace by REM as the agreement with manufacturer and buyer, if like this, then the total amount of REM should be stated.

ASTM A542 Grade C Class 3 steel mechanical properties :

Tensile strength ksi（Mpa）	95-115（655-795）
Yield strength , Min , ksi（Mpa）	75（515）
Elongation 2in（50mm），%，A	20

Shanghai Royal Industry is a professional ASTM A542 steel stockist and supplier. We can supply different product type of ASTMA542. If you have any need of ASTMA542 steel please do

ASTM A542 Grade A	Class 1		Class 2		Class 3		Class 4
ASTM A542 Grade B	Class 1		Class 2		Class 3		Class 4
ASTM A542 Grade C	Class 1		Class 2		Class 3		Class 4
ASTM A542 Grade D	Class 1	Class 2		Class 3		Class 4		Class 4a
ASTM A542 Grade E	-

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