20HN3MFA (20HN3MF)

Production of forgings shaft compressor units and gas turbines, responsible heavily loaded parts operating at temperatures up to +500 ° C

Classification

Country	Section	Category
Country	Section	Category
CIS, Russia, Ukraine	Structural steel	Alloyed structural steel

Chemical composition

Standard	Fe, %	Mn, %	Cr, %	Cu, %	Ni, %	V, %	P, %	S, %	Mo, %
Standard	Fe, %	Mn, %	Cr, %	Cu, %	Ni, %	V, %	P, %	S, %	Mo, %
OST 108.958.04 - 85	92.94–94.74	0.4–0.7	1.4–1.8	< 0.3	3–3.5	0.06–0.12	< 0.02	< 0.02	0.4–0.6

Information on suppliers

Wish to advertise here?

Mechanical properties at 20 °C

Rolling	Standard	Size, mm	Tension	Classifiers	$\sigma _{U}$ , $MPa$	$\sigma_{Y}$ , $MPa$	$\psi$ , %	$KCU\cdot 10^{3}$ , $\frac{J}{m^2}$	d5, %	Treatment
Rolling	Standard	Size, mm	Tension	Classifiers	$\sigma _{U}$ , $MPa$	$\sigma_{Y}$ , $MPa$	$\psi$ , %	$KCU\cdot 10^{3}$ , $\frac{J}{m^2}$	d5, %	Treatment
Forgings	OST 108.958.04 - 85	< 300			785	666–880	35	490	13

Brinell hardness number

Rolling	Standard	Classifiers	Value, HBW
Rolling	Standard	Classifiers	Value, HBW
Forgings			262–302

Standards

Standard	Description
Standard	Description
OST 108.958.04 - 85

Description of chemical elements

Element	Units of measurement	Description
Element	Units of measurement	Description
Fe	%	Iron
Mn	%	Manganese
Cr	%	Chrome
Cu	%	Copper
Ni	%	Nickel
V	%	Vanadium
P	%	Phosphorus
S	%	Sulfur
Mo	%	Molybdenum

Description of mechanical properties

Parameter	Units of measurement	Description
Parameter	Units of measurement	Description
d5	%	Elongation at break
$\sigma_{Y}$	$MPa$	Yield strength
$\sigma _{U}$	$MPa$	Ultimate tensile strength
$\psi$	%	Reduction in cross section on fracture
$KCU\cdot 10^{3}$	$\frac{J}{m^2}$	Impact toughness