C30 - ISO 683-18-2014

Grade	C30
Corresponding Standard	ISO 683-18-2014 Heat-treatable Steels, Alloy Steels and Free-Cutting Steels - Part 18: Bright Steel Products
Classification	Carbon Steel

C30 Chemical Element Composition Content (%)

Component	C	Si ^①	Mn	P	S	Cr	Ni	Cu	Mo	More
Minimum Value	0.27	0.1	0.5	-	-	-	-	-	-	Cr+Mo+Ni≤0.63
Maximum Value	0.34	0.4	0.8	0.045	0.045	0.4	0.4	0.3	0.1	Cr+Mo+Ni≤0.63

C30 Mechanical Properties

	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Hardness HBW
5≤t≤10	Cold drawn (+C)	610~910	≥455	≥6
10＜t≤16	Cold drawn (+C)	570~870	≥420	≥7
16＜t≤40	Cold drawn (+C)	550~850	≥345	≥8
40＜t≤63	Cold drawn (+C)	520~820	≥300	≥9
63＜t≤100	Cold drawn (+C)	480~780	≥250	≥9
16＜t≤100	As-rolled + peeled (+SH)	480~680			143~198

1 Approximate Comparison Table Carbon Structural Steel and Engineering Steel

China	Japan	International Organization for Standardization
GB	JIS	ISO
30	S30C	C30

2 Approximate Comparison Table High-Quality Carbon Structural Steel

China	Japan	United States	International Organization for Standardization	Germany		France	European Standard		Russia	United Kingdom
GB	JIS	SAE	ISO	DIN EN/DIN	W-Nr.	NF EN/NF	EN	Numerical Grade	GOST	BS EN/BS
30	S30C	1030	C30 C30E4	C30 Ck30	1.0528	AF50C30 XC32	C30	1.0528	30	080M32 En5

3 Approximate Comparison Table High-Quality Carbon Structural Steel

China	Japan	United States	International Organization for Standardization	France	Russia	United Kingdom
GB	JIS	ASTM/AISI	ISO	NF EN/NF	GOST	BS EN/BS
GB/T 699-1999 30	S30C	1030	ISO 630-1:1987 C30 C30E4 C30M2	C30 XC32	30	060A30

C30 Corresponding Standards(Same grade name, different standards)

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