C40R - DIN EN ISO 683-1-2018

Grade	C40R
Corresponding Standard	DIN EN ISO 683-1-2018 Heat-treatable steels,alloy steels and free-cutting steels--Part 1: Non-alloy steels for quenching and tempering
Classification	Carbon Steel

C40R Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu	Mo	More
Minimum Value	0.37	0.1	0.5	-	0.02	-	-	-	-	Cr+Mo+Ni≤0.63
Maximum Value	0.44	0.4	0.8	0.025	0.04	0.4	0.4	0.3	0.1	Cr+Mo+Ni≤0.63

C40R Mechanical Properties

	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≤16; t≤8	Quenching and Tempering	650~800	≥460	≥16	≥35	≥20
16＜d≤40；8＜t≤20	Quenching and Tempering	630~780	≥400	≥18	≥40	≥20
40＜d≤100；20＜t≤60	Quenching and Tempering	600~750	≥350	≥19	≥45	≥20
d≤16；t≤16	Normalizing (N)	≥580	≥320	≥16
16<d≤100；16＜t≤100	Normalizing (N)	≥550	≥290	≥17
100<d≤250；100＜t≤250	Normalizing (N)	≥530	≥260	≥17

New and Old Grade Replacement List

C40R Corresponding Standards(Same grade name, different standards)

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