| Grade : | 60KHG ( 60ХГ ) |
| Substitute: | 55Х |
| Classification : | Tool steel for roller |
| Equivalent grades: | Is absent |
Chemical composition in % for grade 60KHG ( 60ХГ )
| C | Si | Mn | Ni | S | P | Cr |
| 0.55 - 0.65 | 0.17 - 0.37 | 0.8 - 1 | max 0.4 | max 0.04 | max 0.04 | 1 - 1.3 |
Temperature of critical points for grade 60KHG ( 60ХГ ).
| Ac1 = 750 , Ac3(Acm) = 800 , Mn = 250 |
Mechanical properties under Т=20oС for grade 60KHG ( 60ХГ )
| Assortment | Dimension | Direct. | sв | sT | d5 | y | KCU | Heat treatment |
| - | mm | - | MPa | MPa | % | % | kJ / m2 | - |
| Roll | до Ø 600 | К | 800-910 | 440-550 | 18 | 38 | 350 |
| Brinell hardness for 60KHG ( 60ХГ ) (normalize, tempering) , | HB 10 -1 = 229 - 285 MPa |
| Brinell hardness for 60KHG ( 60ХГ ) (quenching, tempering) , | HB 10 -1 = 255 - 302 MPa |
Technological properties for grade 60KHG ( 60ХГ )
| Weldability: | is not used. |
| Flakes : | predisposed |
| Temper brittleness: | predisposed |
Specification :
| 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 : | |
| 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 : | |
| 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 |
60KHG ( 60ХГ ) - Tool steel for roller: chemical composition, mechanical and physical properties, hardness
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