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Grade : | 12KH17 ( 12Х17 ) ( Х17 ) |
Substitute: | 12Х18Н9 |
Classification : | Corrosion-resistant high-temperature steel |
Equivalent grades: | Go here |
C | Si | Mn | S | P | Cr |
max 0.12 | max 0.8 | max 0.8 | max 0.025 | max 0.035 | 16 - 18 |
Assortment | Dimension | Direct. | sв | sT | d5 | y | KCU | Heat treatment |
- | mm | - | MPa | MPa | % | % | kJ / m2 | - |
Pipe cooling strain, GOST 9941-81 | 441 | 17 | ||||||
Pipe hot strain, GOST 9940-81 | 441 | 17 | ||||||
Bar, GOST 5949-75 | longitudinal | 390 | 245 | 20 | 50 | Annealing 760 - 780oC, air, | ||
Sheet trick, GOST 7350-77 | 440 | 18 | Annealing | |||||
Sheet thin, GOST 5582-75 | 490 | 20 | Annealing 740 - 780oC, |
Brinell hardness for 12KH17 ( 12Х17 ) (annealing) , Bar GOST 5949-75 | HB 10 -1 = 126 - 197 MPa |
Weldability: | hard weldability. |
Temper brittleness: | predisposed |
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 | 2.32 | 7720 | 560 | |||
100 | 2.27 | 10.4 | 24 | 462 | 610 | |
200 | 2.19 | 10.5 | 24 | 680 | ||
300 | 2.11 | 10.8 | 25 | 770 | ||
400 | 2.01 | 11.2 | 26 | 850 | ||
500 | 1.92 | 11.4 | 26 | 950 | ||
600 | 1.82 | 11.6 | 1030 | |||
700 | 1.65 | 11.9 | 1110 | |||
800 | 1.48 | 12.1 | 1150 | |||
900 | 1160 | |||||
T | E 10- 5 | a 10 6 | l | r | C | R 10 9 |
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В22 - Graded and shaped rolling |
B23 - Sheets and Strips |
В32 - Graded and shaped rolling |
B33 - Sheets and Strips |
В62 - Steel pipes and connecting parts to them |
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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