Tool steel for roller Characteristics for grade 9KH2 ( 9Х2 )
Grade : | 9KH2 ( 9Х2 ) |
Substitute: | 9Х1 |
Classification : | Tool steel for roller |
Equivalent grades: |
Chemical composition in % for grade 9KH2 ( 9Х2 )
C | Si | Mn | Ni | S | P | Cr |
0.85 - 0.95 | 0.25 - 0.5 | 0.2 - 0.7 | max 0.5 | max 0.03 | max 0.03 | 1.7 - 2.1 |
Temperature of critical points for grade 9KH2 ( 9Х2 ).
Ac1 = 756 , Ac3(Acm) = 783 |
Weldability: | is not used. |
Flakes : | predisposed |
Temper brittleness: | predisposed |
USA | Germany | France | England | ||||
- | DIN,WNr | AFNOR | BS | ||||
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Mechanical properties : | |
sв | - Tensile strength , [MPa] |
sT | - Yield stress, [MPa] |
d5 | - Specific elongation at fracture , [ % ] |
y | - Reduction of area , [ % ] |
KCU | - Impact strength , [ kJ / m2] |
HB | - Brinell hardness , [MPa] |
Physical properties : |
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T | - Test temperature , [Grade] |
E | - Young modulus , [MPa] |
a | - Coefficient of linear expansion (range 20o - T ) , [1/Grade] |
l | - Termal (heat) condition coefficient , [Watt/(m·Grade)] |
r | - Density , [kg/m3] |
C | - Specific heat ( range 20o - T ), [J/(kg·Grade)] |
R | - Electrical resistance , [Ohm·m] |
Weldability : |
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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 |
Weldability: | is not used. |
Flakes : | predisposed |
Temper brittleness: | predisposed |