4ХМНФС - GOST 5950-2000

Grade	4ХМНФС
Corresponding Standard	GOST 5950-2000 Tool Alloy Steel Bars, Strips and Coils. General Specifications
Classification	Tool Steel

4ХМНФС Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu	Mo	V	Zr ^①②	B ^①②
Minimum Value	0.35	0.7	0.15	-	-	1.25	1.2	-	0.65	0.35	-	-
Maximum Value	0.45	1	0.45	0.03	0.03	1.55	1.6	0.3	0.85	0.5	0.05	0.003

① The fractions 0.05 % of zirconium and 0.003 % of boron shall be added to the 4ХМНФС grade steel by calculation.
② The fractions, added by calculation, may not be determined using chemical analysis.
③ It is allowed to replace molybdenum partially with tungsten in molybdenum steels: one fraction of the total mass of molybdenum is equivalent to two fractions of the total mass of tungsten.
The quantity of the replaced molybdenum shall be no more than 0.1 % in steels with the fraction of the total mass of molybdenum not exceeding 1.2 % inclusive. It shall be no more than 0.2 % in steels with the fraction of the total mass of milybdenum exceeding 1.2 %.
The sum fraction of the total mass of tungsten, counted to molybdenum, and molybdenum itself shall not exceed the specified fraction of the total mass of molybdenum.

Approximate Comparison Table Alloy Tool Steel 3

Germany	Russia
DIN EN/DIN	GOST
57NiCrMoV7-7 X38CrMoV5-1	4ХМНФС 4KHMNFS

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