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Grade : | 25Kh2M1F ( 25Х2М1Ф ) |
Classification : | Relaxation-resistant steel |
Equivalent grades: | Go here |
C | Si | Mn | Ni | S | P | Cr | Mo | V | Cu |
0.22 - 0.29 | 0.17 - 0.37 | 0.4 - 0.7 | max 0.25 | max 0.025 | max 0.03 | 2.1 - 2.6 | 0.9 - 1.1 | 0.3 - 0.5 | max 0.2 |
Ac1 = 780 , Ac3(Acm) = 870 , Ar3(Arcm) = 790 , Ar1 = 700 |
Assortment | Dimension | Direct. | sв | sT | d5 | y | KCU | Heat treatment |
- | mm | - | MPa | MPa | % | % | kJ / m2 | - |
Bar | Ø 25 | longitudinal | 900 | 750 | 10 | 40 | 300 | Normalizing 1030 - 1060oC,Drawing 680 - 720oC, air, |
Brinell hardness for 25Kh2M1F ( 25Х2М1Ф ) (quenching, tempering) , | HB 10 -1 = 235 - 277 MPa |
Weldability: | is not used. |
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 | 2.23 | 7800 | 270 | |||
100 | 2.18 | 12.5 | 32.7 | 7780 | 536 | 360 |
200 | 2.13 | 12.9 | 31.8 | 7750 | 574 | 420 |
300 | 2.07 | 13.3 | 30.1 | 7720 | 599 | 500 |
400 | 2 | 13.7 | 28.5 | 7680 | 632 | 590 |
500 | 1.92 | 14 | 28.1 | 7650 | 674 | 710 |
600 | 1.83 | 14.7 | 26.4 | 7600 | 733 | 840 |
700 | 1.75 | 970 | ||||
T | E 10- 5 | a 10 6 | l | r | C | R 10 9 |
Germany | |
DIN,WNr | |
|
B03 - Metal forming treatment. Forgings |
В22 - Graded and shaped rolling |
B23 - Sheets and Strips |
В32 - Graded and shaped rolling |
B33 - Sheets and Strips |
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 |
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