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Grade CC21A
Old Grade
Corresponding Standard ISO 4954-1993
Steels for cold heading and cold extruding second edition
Classification Carbon Steel
CC21A Chemical Element Composition Content (%)
Component C Si Mn P S Al *
Minimum Value 0.18 - 0.3 - - 0.02
Maximum Value 0.23 0.1 0.6 0.04 0.04 -
CC21A Mechanical Properties
Tensile Strength
σb
Mpa 		Reduction of Area
ψ
%
≤580 ≥45
1 Approximate Comparison Table Cold Heading Steel
China Taiwan, China Japan South Korea United States International Organization for Standardization Germany France Russia United Kingdom
GB ISC CNS JIS KS ASTM/AISI UNS ISO DIN EN/DIN W-Nr. NF EN/NF GOST BS EN/BS
ML20 U40202 SWRCH20K SWRCH20K SWRCH20K 1020 G10200 CC21A
(A5Al) 		Cq22
(C22C) 		1.1152 XC18
FR20 		20nc 0/4
2 Approximate Comparison Table
China Japan United States International Organization for Standardization Germany European Standard
GB ISC JIS ASTM ISO DIN EN/DIN W-Nr. EN Numerical Grade
ML20Al U40208 SWRCH20A 1020 CC21A
C20E2C 		C20C 1.0411 C20C
C20E2C 		1.0411
3 Approximate Comparison Table Steel for Cold Heading and Cold Extrusion
China Japan South Korea United States International Organization for Standardization Germany United Kingdom
GB JIS KS ASTM ISO DIN EN/DIN BS EN/BS
ML20 SWRCH20K SWCH20K 1020 CC21A Cp22 0/4
CC21A Corresponding Standards(Same grade name, different standards)
1 JIS G 7401-2000
CC21A (A5Al)
2 ISO 4954-1993
CC21A (A5Al)

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