| Grade : | KH6F4M ( Х6Ф4М ) |
| Classification : | Die tool steel |
| Equivalent grades: | Is absent |
Chemical composition in % for grade KH6F4M ( Х6Ф4М )
| C | Si | Mn | S | P | Cr | Mo | V |
| 1.7 - 1.85 | 0.15 - 0.4 | 0.15 - 0.4 | max 0.015 | max 0.02 | 5.7 - 6.5 | 0.5 - 0.8 | 3.5 - 4 |
Temperature of critical points for grade KH6F4M ( Х6Ф4М ).
| Ac1 = 820 , Ac3(Acm) = 860 , Ar1 = 750 , Mn = 260 |
| Brinell hardness for KH6F4M ( Х6Ф4М ) (annealing) , | HB 10 -1 = 241 MPa |
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] |
KH6F4M ( Х6Ф4М ) - Die tool steel: chemical composition, mechanical and physical properties, hardness
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