21CrMoV 5-7 1.7709 - DIN 17240-1976

Grade	21CrMoV 5-7
Germany W-Nr.	1.7709
Corresponding Standard	DIN 17240-1976 Heat Resisting and Highly Heat Resisting Materials for Bolts and Nuts
Classification	Alloy Steel

21CrMoV 5-7 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Mo	V
Minimum Value	0.17	0.15	0.35	-	-	1.2	0.65	0.25
Maximum Value	0.25	0.35	0.85	0.03	0.035	1.5	0.8	0.35

21CrMoV 5-7 Mechanical Properties

condition	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Reduction of Area ψ %	Impact Energy Absorption KV2 J
d≤250	Quenched and Tempered (V)	700~850	≥550	≥16	≥60	ISO-V ≥63

Approximate Comparison Table structural alloy steel

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

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