B8

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#B8

Description

B8 Carbon Steel and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Carbon Steel: B8

Category	Type	Steel Grade
Steel Grades	Carbon Steel	B8
		B3
		100CrMnSi6-4
		B4
		100CrMnSi6-6
		B5
		100CrMo7
		B6
		100CrMo7-3
		B7
		100CrMo7-4

Chemical composition(mass fraction)(wt.%) of the B8

C ≤	Si ≤	Mn ≤	P ≤	S ≤	Cr	Ni
0.93-1.05	0.4-0.6	0.8-1.1	0.025	0.015	1.8-2.05
Mo	Al	Cu	Nb	Ti	V	Ce
0.5-0.6	≤ 0.05	≤0.3		+
N	O2	Pb	B	Other
	≤0.015

Mechanical Properties of steel grade B8

Yield R_p0.2 (MPa)	Tensile R_m (MPa)	Impact KV/Ku (J)	Elongation A (%)	Reduction in cross section on fracture Z (%)	As-Heat-Treated Condition	Brinell hardness (HBW)
539 (≥)	634 (≥)	44	32	33	Solution and Aging, Annealing, Ausaging, Q+T,etc	411

Physical Properties of steel grade B8

Temperature (°C)	Modulus of elasticity (GPa)	Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and	Thermal conductivity (W/m·°C)	Specific thermal capacity (J/kg·°C)	Specific electrical resistivity (Ω mm²/m)	Density (kg/dm³)	Poisson’s coefficient, ν
33	-	-			0.31	-
687	827	-	12.3	213		-
984	-	21	43.2			333	221

Heat Treatment of steel grade B8

Heat treated : 1538°C - 1411°C

Technological Curves of steel grade B8

No Curve

Available Suppliers

Jiangyou Longhai Special Steel Co.,Ltd.

Our main peoducts of steel are many kinds of special steel, like tool steel, mould steel, alloy steel, alloy constructural steel, heat-resistant steel, high speed tool steel,spring steel and bearing steel , stainless steel and so on, which have formed 12 series and more than 350 varieties with n...

Rfq.: sales@longhaisteel.com

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B8