C25 - DIN EN ISO 683-1-2018

Grade	C25
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

C25 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu	Mo	More
Minimum Value	0.22	0.1	0.4	-	-	-	-	-	-	Cr+Mo+Ni≤0.63
Maximum Value	0.29	0.4	0.7	0.045	0.045	0.4	0.4	0.3	0.1	Cr+Mo+Ni≤0.63

C25 Mechanical Properties

	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %
d≤16; t≤8	Quenching and Tempering	550~700	≥370	≥19
16＜d≤40；8＜t≤20	Quenching and Tempering	500~650	≥320	≥21
d≤16；t≤16	Normalizing (N)	≥470	≥260	≥22
16<d≤100；16＜t≤100	Normalizing (N)	≥440	≥230	≥23

New and Old Grade Replacement List

1 Approximate Comparison Table

International Organization for Standardization	Germany	European Standard		Russia
ISO	DIN EN/DIN	EN	Numerical Grade	GOST
C25	C25	C25	1.0406	25

2 Approximate Comparison Table

C25 Corresponding Standards(Same grade name, different standards)

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