SUM21

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#SUM21

Description

SUM21 Carbon Steel and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Carbon Steel: SUM21

Category	Type	Steel Grade
Steel Grades	Carbon Steel	SUM21
		SCM425H
		SCM435H
		SCM440H
		SCM445H
		SCM822H
		SNC415H
		SNC631H
		SNC815H
		SNCM220H
		SNCM420H

Chemical composition(mass fraction)(wt.%) of the SUM21

C ≤	Si ≤	Mn ≤	P ≤	S ≤	Cr	Ni
0.13	0.1-0.35	0.7-1.0	0.07-0.12	0.16-0.23
Mo	Al	Cu	Nb	Ti	V	Ce

N	Co	Pb	B	Other

Mechanical Properties of steel grade SUM21

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)
342 (≥)	621 (≥)	31	42	32	Solution and Aging, Annealing, Ausaging, Q+T,etc	224

Physical Properties of steel grade SUM21

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	-	-			0.43	-
817	673	-	32.3	433		-
641	-	11	32.2			112	322

Heat Treatment of steel grade SUM21

Heat treated : 1174°C - 1181°C

Technological Curves of steel grade SUM21

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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