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Metals -> Tool steel -> Tool steel for roller

Characteristics of the material 90KHF ( 90HF, 90ХФ ).

Material :	90KHF ( 90HF, 90ХФ )
Substitute:	9Х1, 9Х2
Classification :	Tool steel for roller

Chemical composition in % of the material 90KHF ( 90HF, 90ХФ ) .

C	Si	Mn	Ni	S	P	Cr	V	Cu
0.8 - 0.9	0.15 - 0.35	0.3 - 0.6	max 0.35	max 0.03	max 0.03	0.4 - 0.7	0.15 - 0.3	max 0.3

Temperature of critical points of the grade 90KHF ( 90HF, 90ХФ ).

Ac₁ = 700 , Mn = 215

Mechanical properties under Т=20^oС of the material 90KHF ( 90HF, 90ХФ ) .

Assortment	Dimension	Direct.	s_в	s_T	d₅	y	KCU	Heat treatment
-	mm	-	MPa	MPa	%	%	kJ / m²	-
Steel			990	670	19	55	450	Normalizing 870^oC,Drawing 650^oC,

Brinell hardness of the material 90KHF ( 90HF, 90ХФ ) (annealing) ,

HB 10^-1= 241 MPa

Physical properties of the material 90KHF ( 90HF, 90ХФ ) .

T	E 10^{- 5}	a 10⁶	l	r	C	R 10⁹
Grade	MPa	1/Grade	Watt/(m·Grade)	kg/m³	J/(kg·Grade)	Ohm·m
20
100			44		460
200			42		500
300			38		560
400			36		620
500			33		670
600			31		730
700			29		1320
800			27		720
900			27		640
1000					650
T	E 10^{- 5}	a 10⁶	l	r	C	R 10⁹

Technological properties of the material 90KHF ( 90HF, 90ХФ ) .

Weldability:	is not used.
Flakes :	predisposed
Temper brittleness:	predisposed

Specification :

Mechanical properties :
s_в	- Tensile strength , [MPa]
s_T	- Yield stress, [MPa]
d₅	- Specific elongation at fracture , [ % ]
y	- Reduction of area , [ % ]
KCU	- Impact strength , [ kJ / m²]
HB	- Brinell hardness , [MPa]

Physical properties :
T	- Test temperature , [Grade]
E	- Young modulus , [MPa]
a	- Coefficient of linear expansion (range 20^o - T ) , [1/Grade]
l	- Termal (heat) condition coefficient , [Watt/(m·Grade)]
r	- Density , [kg/m³]
C	- Specific heat ( range 20^o - T ), [J/(kg·Grade)]
R	- Electrical resistance , [Ohm·m]

Weldability :
without limitations	- welding is done without heating and subsequent heat treeting
limited weldability	- welding is possible under heating up to 100-120 grade and subsequent heat treeting
hard weldability	- obtaining the quality welding needs the additional operations:heating up to 200-300 grade; the heat treeting ia annealing

Database of steels and alloys (Marochnik) contains information about chemical composition and properties of 1500 steels and alloys (stainless steel, alloy steel, carbone steel, structural steel, tool steel, cast iron, aluminum alloy, titanium alloy, copper alloy, nickel alloy, magnesium alloy and others).
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