ASTM-Gr.B21-4

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Product Details

Chemical composition

C(%)	V(%)	Si(%)	Mn(%)	P(%)	S(%)	Cr(%)	Mo(%)	Thick (mm)	Yield stress (Mpa)
C(%)(%) 0.36-0.44	V(%)(%) 0.25-0.35	0.36-0.44	Mn(%)(%) 0.45-0.70	P(%)(%) ≦0.025	0.36-0.44	0.36-0.44	0.36-0.44	0.36-0.44	0.36-0.44

Applications

Alloy Steel Bars for Special Application Bolting Materials

Country Code:

ASTM

Standard

A540

Steel Type

Gr.B21-4

Heat treatment

Heat Treatment of steel grade A841 Gr.B
Heat treated : 1811°C - 1911°C

Relate Steel Type

Steel Type	Standard	Country Code	C(%)	V(%)	Si(%)	Mn(%)	P(%)	S(%)	Cr(%)
SNB21-4	G4108	JIS	0.36-0.44	0.25-0.35	0.20-0.35	0.45-0.70	≦0.025	≦0.025	0.80-1.15
Gr.B21-4	A540	ASTM	0.36-0.44	0.25-0.35	0.15-0.35	0.45-0.70	≦0.025	≦0.025	0.80-1.15
40CrMoV4-7	17240	DIN	0.35-0.45	0.25-0.35	0.20-0.35	0.45-0.70	≦0.04	≦0.04	0.8-1.2

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Gr.B24-4	SNB22-2	Gr.B21-3	Gr.B22-5	SNB21-3	SNB24-4	Gr.B21-4	SNB23-2	Gr.B22-2	Gr.B22-2

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