Metals -> Tool steel -> High speed tool steel Characteristics of the material R9K10 ( R9K10, Ð9Ê10 ).
Material : R9K10 ( R9K10, Ð9Ê10 ) Classification : High speed tool steel
Chemical composition in % of the material R9K10 ( R9K10, Ð9Ê10 ) . C Si Mn Ni S P Cr Mo W V Co 0.9 - 1 max 0.5 max 0.4 max 0.4 max 0.03 max 0.03 3.8 - 4.4 max 1 9 - 10.5 2 - 2.6 9 - 10.5
Temperature of critical points of the grade R9K10 ( R9K10, Ð9Ê10 ).
Ac1 = 840 , Ac3 (Acm ) = 870 , Ar1 = 785
Brinell hardness of the material R9K10 ( R9K10, Ð9Ê10 ) (annealing) , HB 10 -1 = 269 MPa
Physical properties of the material R9K10 ( R9K10, Ð9Ê10 ) . T E 10- 5 a 10 6 l r C R 10 9 Grade MPa 1/Grade Watt/(m·Grade) kg/m3 J/(kg·Grade) Ohm·m 20 8300
Specification :
Physical properties :
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]
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