| Grade : | 20KHF ( 20ХФ ) |
| Classification : | Alloy structurall steel |
| Equivalent grades: | Go here |
Chemical composition in % for grade 20KHF ( 20ХФ )
| C | Si | Mn | Ni | S | P | Cr | V | Cu |
| 0.17 - 0.23 | max 0.2 | 0.5 - 0.8 | max 0.3 | max 0.035 | max 0.035 | 0.8 - 1.1 | 0.1 - 0.2 | max 0.3 |
Temperature of critical points for grade 20KHF ( 20ХФ ).
| Ac1 = 768 , Ac3(Acm) = 840 |
| Brinell hardness for 20KHF ( 20ХФ ) (hot-rolled, annealing) , | HB 10 -1 = 170 MPa |
Technological properties for grade 20KHF ( 20ХФ )
| Flakes : | weakly predisposed |
| Temper brittleness: | weakly predisposed |
Physical properties for grade 20KHF ( 20ХФ )
| 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 | ||||||
| 100 | 12 | |||||
| 200 | 12.5 | |||||
| 300 | ||||||
| 400 | 13 | |||||
| 500 | 13.7 | |||||
| T | E 10- 5 | a 10 6 | l | r | C | R 10 9 |
Equivalent steels for grade 20KHF ( 20ХФ )
| USA | Germany | ||
| - | DIN,WNr | ||
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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 |
20KHF ( 20ХФ ) - Alloy structurall steel: chemical composition, mechanical and physical properties, hardness
Database of steels and alloys (Marochnik) contains information about chemical composition and properties more then 3000 steels and alloys
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