5145H H51450 - ASTM A304-2016

Grade	5145H
USA UNS	H51450
Corresponding Standard	ASTM A304-2016 Carbon and Alloy Steel Bars Subject to End-Quench Hardenability Requirements
Classification	Alloy Steel

5145H Chemical Element Composition Content (%)

Component	C	Si	Mn	Cr	Ni ^①	Cu ^①	Mo ^①
Minimum Value	0.42	0.15	0.6	0.6	-	-	-
Maximum Value	0.49	0.35	1	1	0.25	0.35	0.06

Note: Standard H Steels can be produced with a lead range of 0.15-0.35 %. Such steels are identified by inserting the letter L between the second and third numerals of the grade designation, for example, 40L40 H. Lead is generally reported as a range of 0.15-0.35 %.

Approximate Comparison Table

China		United States		International Organization for Standardization	France	Russia	United Kingdom
GB	ISC	ASTM	UNS	ISO	NF EN/NF	GOST	BS EN/BS
45CrH	A20455	5145H	H51450	≈41Cr4H	≈41Cr4	45Х	≈41Cr4

5145H Corresponding Standards(Same grade name, different standards)

1	ASTM A 304-2004
	5145H H51450
2	ASTM A304-2016
	5145H H51450

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