ML20 U40202 - GB /T 6478-2015

Grade	ML20
China ISC	U40202
Corresponding Standard	GB /T 6478-2015 Steels For Cold Heading And Cold Extruding
Classification	Carbon Steel
Properties	Forgability Weldability Quench Hardness Carburizing Ability

ML20 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S
Minimum Value	0.18	0.1	0.3	-	-
Maximum Value	0.23	0.3	0.6	0.035	0.035

ML20 Mechanical Properties

diameter d mm	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Reduction of Area ψ %
5（12）≤d≤60（100）	Hot Rolling	≤580			≥45
5（12）≤d≤60（100）	Annealing	≤490			≥63
d=25 (sample diameter)	Heat Treated	520~820	≥320	≥11

1 Approximate Comparison Table Cold Heading Steel

China

Taiwan, China

Japan

South Korea

United States

International Organization for Standardization

Germany

France

Russia

United Kingdom

ISC

CNS

JIS

ASTM/AISI

UNS

ISO

DIN EN/DIN

W-Nr.

NF EN/NF

GOST

BS EN/BS

ML20

U40202

SWRCH20K

1020

G10200

CC21A
(A5Al)

Cq22
(C22C)

1.1152

XC18
FR20

20nc

0/4

2 Approximate Comparison Table Steel for Cold Heading and Cold Extrusion

China		Japan	United States	International Organization for Standardization	Germany		European Standard
GB	ISC	JIS	ASTM	ISO	DIN EN/DIN	W-Nr.	EN	Numerical Grade
ML20	U40202	SWRCH20K	1020	CC21K	C20C	1.0411	C20C	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

ML20 Corresponding Standards(Same grade name, different standards)

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