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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
C4C Mechanical Properties
diameter
d
mm		 Heat Treatment or Condition
Tensile Strength
σb
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
Japan International Organization for Standardization European Standard
JIS ISO EN Numerical Grade
SWRCH6A C2C
C4C 		C2C
C4C 		1.0314
1.0303
2 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
3 Approximate Comparison Table Steel for Cold Heading and Cold Extrusion
China Japan United States International Organization for Standardization European Standard
GB ISC JIS ASTM ISO EN
ML06Al U40068 SWRCH6A 1006 C4C C4C
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

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