21CrMoV5-7 1.7709 - EN 10269-2013

Grade	21CrMoV5-7
European Standard Steel Grade	1.7709
Corresponding Standard	EN 10269-2013 Steels and Nickel Alloys for Fasteners with Specified Elevated and/or Low Temperature Properties
Classification	Alloy Steel
Properties	Quench Hardness
Density	7.85 g/cm³

21CrMoV5-7 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Mo	V	Al
Minimum Value	0.17	-	0.4	-	-	1.2	-	0.55	0.2	-
Maximum Value	0.25	0.4	0.8	0.025	0.03	1.5	0.6	0.8	0.35	0.03

21CrMoV5-7 Mechanical Properties

diameter d mm	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Reduction of Area ψ %	Hardness HBW	Impact Energy Absorption KV2 J
-*	+S	-	-	-	-	≤255	-
-*	+AC	-	-	-	-	≤229	-
d≤160**	+QT	700~850	≥550	≥16	≥60	-	≥63

1 Approximate Comparison Table Structural Alloy Steel

2 Approximate Comparison Table Steel for Cold Heading and Cold Extrusion

21CrMoV5-7 Corresponding Standards(Same grade name, different standards)

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