ML20Cr - GB /T 5953.1-2009

Grade	ML20Cr
Corresponding Standard	GB /T 5953.1-2009 Steel Wire for Cold Heading and Cold Forging— Part 1: Intended for Heat Treatment
Classification	Carbon Steel

ML20Cr Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Al ^*
Minimum Value	0.18	0.1	0.6	-	-	0.9	0.02
Maximum Value	0.23	0.3	0.9	0.035	0.035	1.2	-

ML20Cr Mechanical Properties

diameter d mm	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Reduction of Area ψ %	Hardness HBW
d≤6	SALD	440~640	≥55
6＜d≤12	SALD	420~600	≥55
12＜d≤25	SALD	400~550	≥50	HRB ≤85
d≤25	SA	370~520	≥60	HRB ≤82

Approximate Comparison Table Cold Heading Steel

China		United States		International Organization for Standardization	Russia
GB	ISC	ASTM/AISI	UNS	ISO	GOST
ML20Cr	A20204	5120	G51200	20Cr4E (B10)	20Х

ML20Cr 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"!