| Grade : | 6KH6V3MFS ( 6Х6В3МФС ) ( 55Х6В3СМФ ЭП569 ) |
| Classification : | Alloy tool steel |
| Equivalent grades: | Is absent |
Chemical composition in % for grade 6KH6V3MFS ( 6Х6В3МФС )
| C | Si | Mn | Ni | S | P | Cr | Mo | W | V | Cu |
| 0.5 - 0.6 | 0.6 - 0.9 | 0.15 - 0.45 | max 0.4 | max 0.03 | max 0.03 | 5.5 - 6.5 | 0.6 - 0.9 | 2.5 - 3.2 | 0.5 - 0.8 | max 0.3 |
Temperature of critical points for grade 6KH6V3MFS ( 6Х6В3МФС ).
| Ac1 = 875 , Ac3(Acm) = 905 , Ar1 = 755 , Mn = 250 |
Mechanical properties under Т=20oС for grade 6KH6V3MFS ( 6Х6В3МФС )
| Assortment | Dimension | Direct. | sв | sT | d5 | y | KCU | Heat treatment |
| - | mm | - | MPa | MPa | % | % | kJ / m2 | - |
| 1800-2000 | Guenching and drawing |
| Brinell hardness for 6KH6V3MFS ( 6Х6В3МФС ) (annealing) , GOST 5950-2000 | HB 10 -1 = 255 MPa |
Types of delivery of grade 6KH6V3MFS ( 6Х6В3МФС )
| В32 - Graded and shaped rolling |
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] |
6KH6V3MFS ( 6Х6В3МФС ) - Alloy tool steel: chemical composition, mechanical and physical properties, hardness
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