| Grade : | 12Kh1MF ( 12Х1МФ ) ( 12ХМФ ) |
| Classification : | Low alloy high-temperature steel |
| Equivalent grades: | Go here |
Chemical composition in % for grade 12Kh1MF ( 12Х1МФ )
| C | Si | Mn | Ni | S | P | Cr | Mo | V | Cu |
| 0.1 - 0.15 | 0.17 - 0.37 | 0.4 - 0.7 | max 0.3 | max 0.025 | max 0.03 | 0.9 - 1.2 | 0.25 - 0.35 | 0.15 - 0.3 | max 0.2 |
Temperature of critical points for grade 12Kh1MF ( 12Х1МФ ).
| Ac1 = 760 , Ac3(Acm) = 890 , Ar3(Arcm) = 825 , Ar1 = 730 , Mn = 430 |
Mechanical properties under Т=20oС for grade 12Kh1MF ( 12Х1МФ )
| Assortment | Dimension | Direct. | sв | sT | d5 | y | KCU | Heat treatment |
| - | mm | - | MPa | MPa | % | % | kJ / m2 | - |
| Sheet, GOST 5520-79 | 440-640 | 295 | 21 | 790 | ||||
| Bar, GOST 20072-74 | longitudinal | 470 | 255 | 21 | 55 | 980 | Normalizing 960 - 980oC,Drawing 740 - 760oC, | |
| Forging | longitudinal | 480 | 260 | 20 | 50 | 600 | Normalizing and high drawing |
| Brinell hardness for 12Kh1MF ( 12Х1МФ ) (normalize) , | HB 10 -1 = 123 - 179 MPa |
| Brinell hardness for 12Kh1MF ( 12Х1МФ ) (hot-rolled, annealing) , GOST 20072-74 | HB 10 -1 = 217 MPa |
Technological properties for grade 12Kh1MF ( 12Х1МФ )
| Weldability: | limited weldability. |
Physical properties for grade 12Kh1MF ( 12Х1МФ )
| 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 | 1.98 | 7800 | 230 | |||
| 100 | 1.93 | 12.4 | 44 | 7780 | 278 | |
| 200 | 1.88 | 13 | 44 | 7750 | 343 | |
| 300 | 1.83 | 13.6 | 42 | 7720 | 430 | |
| 400 | 1.75 | 14 | 40 | 7680 | 532 | |
| 500 | 1.67 | 14.4 | 37 | 7640 | 647 | |
| 600 | 1.57 | 14.7 | 35 | 7600 | 775 | |
| 700 | 1.51 | 14.9 | 32 | 7570 | 962 | |
| 800 | 14.8 | 28 | 7540 | 1087 | ||
| 900 | 12 | 28 | 7560 | 1130 | ||
| T | E 10- 5 | a 10 6 | l | r | C | R 10 9 |
Equivalent steels for grade 12Kh1MF ( 12Х1МФ )
| Germany | England | Spain | ||||
| DIN,WNr | BS | UNE | ||||
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Types of delivery of grade 12Kh1MF ( 12Х1МФ )
| B03 - Metal forming treatment. Forgings |
| В22 - Graded and shaped rolling |
| B23 - Sheets and Strips |
| В32 - Graded and shaped rolling |
| B33 - Sheets and Strips |
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 |
12Kh1MF ( 12Х1МФ ) - Low alloy high-temperature 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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