C4C - ISO 4954-1-2024

Grade	C4C
Corresponding Standard	ISO 4954-1-2024 Steels for Cold Heading and Cold Extruding - Technical Delivery Conditions - Part1: Non-Alloy and Alloy Steels
Classification	Carbon Steel

C4C Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu	Mo	Al ^①	More
Minimum Value	0.02	-	0.25	-	-	-	-	-	-	0.02	Cr+Ni+Mo≤0.50
Maximum Value	0.06	0.1	0.4	0.02	0.025	0.3	0.3	0.3	0.1	0.06	Cr+Ni+Mo≤0.50

C4C Mechanical Properties

diameter d mm	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Reduction of Area ψ %
5＜d≤100	+AR or +AR+PE	≤390	≥70*
5＜d≤100	+AC or +AC+PE	≤330	≥75
5＜d≤10	+AR+C	≤470	≥66
10＜d≤40		≤460	≥66
2≤d≤5	+AR+C+AC	≤320	≥77
5＜d≤10		≤310	≥77
10＜d≤40		≤300	≥77
2≤d≤5	+AR+C+AC+LC	≤360	≥73
5＜d≤40		≤350	≥73
5＜d≤10	+AC+C	≤410	≥70
10＜d≤40		≤400	≥70

①+AR=as hot-rolled；+AR or +PE=as hot-rolled or peeled；+AR+C=as hot-rolled+cold drawn；+AR+C+AC=as hot-rolled+cold drawn+spheroidized；+AR+C+AC+LC=as hot-rolled+cold drawn+spheroidized+skin passed；+AC= spheroidized ；+AC or +AC+PE=spheroidized or spheroidized+peeled；+AC+C=spheroidized +cold drawn；+FP=treated to ferrite-pearlite structure and hardness range；+AC+C+AC=spheroidized +cold drawn + spheroidized；+AC+C+AC+LC=spheroidized +cold drawn + spheroidized + skin passed

• Mechanical properties of wire rod, bars and wire not intended for heat treatment after cold working
* The values are given only for information.

1 Approximate Comparison Table Steel for Cold Heading and Cold Extrusion

China		United States	International Organization for Standardization	European Standard
GB	ISC	ASTM	ISO	EN	Numerical Grade
ML04Al	U40048	1005	CC4A C4C	C4C	1.0303

2 Approximate Comparison Table Steel for Cold Heading and Cold Extrusion

China		United States	International Organization for Standardization	European Standard
YB	GB	ASTM	ISO	EN
QML04Al	ML04Al	1005	C4C	C4C

3 Approximate Comparison Table Steel for Cold Heading and Cold Extrusion

China		Japan	United States	International Organization for Standardization	European Standard
YB	GB	JIS	ASTM	ISO	EN
QML06Al	ML06Al	SWRCH6A	1006	C4C	C4C

4 Approximate Comparison Table Steel for Cold Heading and Cold Extrusion

China	Japan	International Organization for Standardization	European Standard
GB	JIS	ISO	EN	Numerical Grade
ML04Al	SWRCH6A	C4C	C4C	1.0303

C4C Corresponding Standards(Same grade name, different standards)

1	EN 10263-2-2001
	C4C 1.0303
2	Q/BQB 517-2018
	C4C
3	DIN EN 10263-2-2017
	C4C 1.0303
4	EN 10263-2-2017
	C4C 1.0303
5	ISO 4954-2018
	C4C
6	ISO 4954-1-2024
	C4C
7	DIN EN 10263-2-2002
	C4C 1.0303

Note: The data is for reference only! If you have any questions, please fill out "I want to correct it"!