SA204 steel plate > ASME > Views - ASME SA542 Grade D Class 4a alloy steel plates for pressure vessels

ASME SA542 Grade D Class 4a alloy steel plates for pressure vessels

ASME SA542 Grade D Class 4a alloy steel plates for pressure vessels

SA542 Grade D Class 4a in the standard SA-542/SA-542M is a kind of Mo-V alloy steel plates material used to fabric high temperature pressure vessels. SA542 have Five grades or levels. They are : grade A, grade B, grade C, grade D, grade E . SA542 Grade D Class 4a need to be done the (Quenching + Tempering ) heat-treatment to meet the property requirement in the standard ASME SA-542/SA-542M.

Key words:SA542Grade D Class 4a,ASME SA542Grade D Class 4a,SA542Grade D Class 4a alloy steel plates,SA542Grade D Class 4a Mo-V alloy steel plates,ASME SA542Grade D Class 4a alloy steel plates for fabric high temperature pressure vessels.

ASME SA542 Grade D Class 4a steel chemical composition:

Composition

Grade B

C

Heat analyse

0.11~0.15

Product analyse

0.09~0.18

Mn

Heat analyse

0.30~0.60

Product analyse

0.25~0.66

P ≤

Heat analyse

0.015

Product analyse

0.020

S ≤

Heat analyse

0.010

Product analyse

0.015

Si ≤

Heat analyse

0.010

Product analyse

0.013

Ni ≤

Heat analyse

0.25

Product analyse

0.28

Cr

Heat analyse

2.00~2.50

Product analyse

1.08~2.62

Mo

Heat analyse

0.90~1.10

Product analyse

0.85~1.15

B

Heat analyse

0.0022

Product analyse

-

V

Heat analyse

0.25-0.35

Product analyse

0.23-0.37

Ti

Heat analyse

≤0.030

Product analyse

≤0.035

Ca②

Heat analyse

≤0.015

Product analyse

≤0.020

Cu≤

Heat analyse

0.20

Product analyse

0.25

Nb

Heat analyse

≤0.07

Product analyse

≤0.08

Note : ① In SA 542/SA 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.

ASME SA542 Grade D Class 4a steel mechanical properties :

Tensilestrengthksi(Mpa)

85-110(585-760)

Yieldstrength,Min,ksi(Mpa)

55(380)

Elongation2in(50mm),%,A

20

Shanghai Royal Industry is a professional ASME SA542 steel stockist and supplier. We can supply different product type of ASME SA542. If you have any need of ASME SA542 steel please do not hesitate to contact us .

Related link :

ASMESA542GradeA

Class1

Class2

Class3

Class4

ASMESA542GradeB

Class1

Class2

Class3

Class4

ASMESA542GradeC

Class1

Class2

Class3

Class4

ASMESA542GradeD

Class1

Class2

Class3

Class4

Class4a

ASMESA542GradeE

-

Get in touch
Quick contact
Name:
E-mail:
Tel:
Message: