Category · 156 grades

Cold extrusion steels

Cold extrusion steels are engineering materials designed to be shaped into components by cold forming and extrusion. They combine the ductility needed for substantial plastic deformation with the strength and toughness required in cold-formed fasteners, automotive parts and other precision components.

Grade	Material no.	C	P	S	Mn	Si	Cr
SWCH10K	—	—	—	—	—	—	—
SWRCH12K	—	0.1 - 0.15	max 0.03	max 0.035	0.3 - 0.6	0.1 - 0.35	max 0.2
SCM440HRCH	—	0.37 - 0.44	max 0.03	max 0.03	0.55 - 0.95	0.15 - 0.35	0.85 - 1.25
SWCHB620	—	0.17 - 0.23	max 0.03	max 0.03	1.1 - 1.4	0.1 - 0.35	—
SWCH17K	—	—	—	—	—	—	—
SWRCH18K	—	0.15 - 0.2	max 0.03	max 0.035	0.6 - 0.9	0.1 - 0.35	max 0.2
SCM822HRCH	—	0.19 - 0.25	max 0.03	max 0.03	0.55 - 0.95	0.15 - 0.35	0.85 - 1.25
SMn420RCH	—	0.17 - 0.23	max 0.03	max 0.03	1.2 - 1.5	0.15 - 0.35	max 0.35
SWCH24K	—	—	—	—	—	—	—
SWRCH25K	—	0.22 - 0.28	max 0.03	max 0.035	0.3 - 0.6	0.1 - 0.35	max 0.2
SNC631HRCH	—	0.26 - 0.35	max 0.03	max 0.03	0.3 - 0.7	0.15 - 0.35	0.55 - 1.05
SMn438RCH	—	0.35 - 0.41	max 0.03	max 0.03	1.35 - 1.65	0.15 - 0.35	max 0.35
SWCH33K	—	—	—	—	—	—	—
SWRCH35K	—	0.32 - 0.38	max 0.03	max 0.035	0.6 - 0.9	0.1 - 0.35	max 0.2
SNCM220HRCH	—	0.17 - 0.23	max 0.03	max 0.03	0.6 - 0.95	0.15 - 0.35	0.35 - 0.65
SMnC420RCH	—	0.17 - 0.23	max 0.03	max 0.03	1.2 - 1.5	0.15 - 0.35	0.35 - 0.7
SWCH41K	—	—	—	—	—	—	—
SWRCH43K	—	0.4 - 0.46	max 0.03	max 0.035	0.6 - 0.9	0.1 - 0.35	max 0.2
SNCM439RCH	—	0.36 - 0.43	max 0.03	max 0.03	0.6 - 0.9	0.15 - 0.35	0.6 - 1
SCr420RCH	—	0.18 - 0.23	max 0.03	max 0.03	0.6 - 0.9	0.15 - 0.35	0.9 - 1.2
SWCH50K	—	—	—	—	—	—	—
SWRCHB223	—	0.2 - 0.26	max 0.03	max 0.03	0.6 - 0.9	0.1 - 0.35	—
SWCH8R	—	—	—	—	—	—	—
SWRCH8R	—	max 0.1	max 0.04	max 0.04	max 0.6	—	max 0.2
SCr435RCH	—	0.33 - 0.38	max 0.03	max 0.03	0.6 - 0.9	0.15 - 0.35	0.9 - 1.2
SWRCH15R	—	0.13 - 0.18	max 0.04	max 0.04	0.3 - 0.6	—	max 0.2
SCr440HRCH	—	0.37 - 0.44	max 0.03	max 0.03	0.55 - 0.95	0.15 - 0.35	0.85 - 1.25
SWRCHB526	—	0.23 - 0.29	max 0.03	max 0.03	0.9 - 1.2	0.1 - 0.35	—
SWCH10A	—	—	—	—	—	—	—
SWRCH10A	—	0.08 - 0.13	max 0.03	max 0.035	0.3 - 0.6	max 0.1	max 0.2
SCM418HRCH	—	0.15 - 0.21	max 0.03	max 0.03	0.55 - 0.95	0.15 - 0.35	0.85 - 1.25
SWRCHB734	—	0.31 - 0.37	max 0.03	max 0.03	1.2 - 1.5	0.1 - 0.35	—
SWCH18A	—	—	—	—	—	—	—
SWRCH19A	—	0.15 - 0.2	max 0.03	max 0.035	0.7 - 1	max 0.1	max 0.2
SCM425HRCH	—	0.23 - 0.28	max 0.03	max 0.03	0.55 - 0.95	0.15 - 0.35	0.85 - 1.25
SWCHB323	—	0.2 - 0.26	max 0.03	max 0.03	0.7 - 1	0.1 - 0.35	—
SWCH25A	—	—	—	—	—	—	—
SWRCH10K	—	0.08 - 0.13	max 0.03	max 0.035	0.3 - 0.6	0.1 - 0.35	max 0.2
SCM440RCH	—	0.38 - 0.43	max 0.03	max 0.03	0.6 - 0.9	0.15 - 0.35	0.9 - 1.2
SWCHB526	—	0.23 - 0.29	max 0.03	max 0.03	0.9 - 1.2	0.1 - 0.35	—
SWCH16K	—	—	—	—	—	—	—
SWRCH17K	—	0.15 - 0.2	max 0.03	max 0.035	0.3 - 0.6	0.1 - 0.35	max 0.2
SCM822RCH	—	0.2 - 0.25	max 0.03	max 0.03	0.6 - 0.9	0.15 - 0.35	0.9 - 1.2
SWCHB734	—	0.31 - 0.37	max 0.03	max 0.03	1.2 - 1.5	0.1 - 0.35	—
SWCH22K	—	—	—	—	—	—	—
SWRCH24K	—	0.19 - 0.25	max 0.03	max 0.035	1.35 - 1.65	0.1 - 0.35	max 0.2
SNC631RCH	—	0.27 - 0.35	max 0.03	max 0.03	0.35 - 0.65	0.15 - 0.35	0.6 - 1
SMn433HRCH	—	0.29 - 0.36	max 0.03	max 0.03	1.15 - 1.55	0.15 - 0.35	max 0.35
SWCH30K	—	—	—	—	—	—	—
SWRCH33K	—	0.3 - 0.36	max 0.03	max 0.035	0.6 - 0.9	0.1 - 0.35	max 0.2

Standards covering this category

Property ranges

Property	Unit	Min	Max	Grades
Rm	N/mm²	290	1076	48
Re	N/mm²	225	958	4
A	%	17	30	3
A5	%	6	30	4
Z	%	30	55	48
KCU	kJ/m²	150	400	1
HB	—	121	255	3
HRB	—	80	97	37
rho	g/cm³	7.549	7.9	6
E	GPa	152	217	4
alpha	10^-6/K	11.9	15.3	3
lambda	W/(m·K)	26	56.1	4
cp	J/(kg·K)	465	720	3
rho_el	nΩ·m	233	1156	2
Ac1	°C	730	810	4
Ac3	°C	755	950	4
Ar3	°C	690	840	4
Ar1	°C	680	780	4

Derived from 48 grades in this category with a recorded value.

Composition range

Property	Unit	Min	Max	Grades
B	%	0.0008	0.0008	24
C	%	0.08	0.53	118
Al	%	0.02	0.02	10
Si	%	0.1	0.4	112
P	%	0.025	0.04	118
S	%	0.025	0.04	118
Cr	%	0.2	1.8	90
Mn	%	0.3	1.7	118
Ni	%	0.2	3.5	88
Cu	%	0.25	0.3	92
Mo	%	0.15	0.6	25

Derived from 118 grades in this category with a recorded value.