| Grade : | 20Kh1M1F1TR ( 20Х1М1Ф1ТР ) ( ЭП182 ) |
| Classification : | Relaxation-resistant steel |
| Equivalent grades: | Is absent |
Chemical composition in % for grade 20Kh1M1F1TR ( 20Х1М1Ф1ТР )
| C | Si | Mn | Ni | S | P | Cr | Mo | V | Ti | B |
| 0.17 - 0.24 | max 0.37 | max 0.5 | max 0.5 | max 0.03 | max 0.03 | 0.9 - 1.4 | 0.8 - 1.1 | 0.7 - 1 | 0.05 - 0.12 | max 0.005 |
Temperature of critical points for grade 20Kh1M1F1TR ( 20Х1М1Ф1ТР ).
| Ac1 = 800 - 830 , Ac3(Acm) = 890 - 930 |
Mechanical properties under Т=20oС for grade 20Kh1M1F1TR ( 20Х1М1Ф1ТР )
| Assortment | Dimension | Direct. | sв | sT | d5 | y | KCU | Heat treatment |
| - | mm | - | MPa | MPa | % | % | kJ / m2 | - |
| Rolled stock, GOST 20072-74 | longitudinal | 780 | 665 | 15 | 50 | 590 | Guenching 980oC, oil, Drawing 700oC, 5 - 7h, |
| Brinell hardness for 20Kh1M1F1TR ( 20Х1М1Ф1ТР ) (hot-rolled, annealing) , GOST 20072-74 | HB 10 -1 = 229 MPa |
Physical properties for grade 20Kh1M1F1TR ( 20Х1М1Ф1ТР )
| 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 | 2.15 | 7850 | ||||
| 100 | 2.12 | 42.3 | ||||
| 200 | 2.08 | 12 | 40.6 | |||
| 300 | 2.02 | 12.3 | 40.2 | |||
| 400 | 1.94 | 12.85 | 39.8 | |||
| 500 | 1.83 | 13 | 39.4 | |||
| 600 | 1.74 | 13.5 | 38.9 | |||
| 700 | 1.53 | 13.55 | 38.5 | |||
| 800 | 38.1 | |||||
| T | E 10- 5 | a 10 6 | l | r | C | R 10 9 |
Types of delivery of grade 20Kh1M1F1TR ( 20Х1М1Ф1ТР )
| 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] |
20Kh1M1F1TR ( 20Х1М1Ф1ТР ) - Relaxation-resistant 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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