ML20Al U40208 - GB T 6478-2001

Grade	ML20Al
China ISC	U40208
Corresponding Standard	GB T 6478-2001 Steels for cold heading and cold extruding
Classification	Carbon Steel

ML20Al Chemical Element Composition Content (%)

Component	C	Si ^®	Mn	P	S	Cr ^*	Ni ^*	Cu ^*	Al ^ⓐ
Minimum Value	0.18	-	0.3	-	-	-	-	-	0.02
Maximum Value	0.23	0.1	0.6	0.035	0.035	0.2	0.2	0.2	-

①By agreement between the supplier and the purchaser, other grades of cold heading and cold extrusion steel may be supplied.
②Permissible deviations in the chemical composition of the steel shall comply with the relevant provisions of GB/T 222-1984.

ML20Al Mechanical Properties

condition	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Reduction of Area ψ %	Hardness HBW
Steel	Hot Rolling	≤580			≥45
Steel	Annealing	≤490			* ≥63
Sample diameter d=25	Heat Treatment	520~820	≥320	≥11		Hot Rolled Brinell Hardness HBS ≤156

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

ML20Al Corresponding Standards(Same grade name, different standards)

1	GB T 6478-2001
	ML20Al U40208
2	GB /T 6478-2015
	ML20Al U40208
3	GB /T 28906-2012
	ML20Al U40208
4	GB /T 5953.2-2009
	ML20Al
5	GB /T 28906-2025
	ML20Al U40208

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