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Grade : | KhN77TYuR ( ХН77ТЮР ) ( ЭИ437Б ХН77ТЮР-ВД ЭИ437Б-ВД ) |
Classification : | Hidh-temperature or heat-resistant alloy |
Equivalent grades: | Go here |
Fe | C | Si | Mn | Ni | S | P | Cr | Ce | Ti | Al | B | Pb |
max 1 | max 0.07 | max 0.6 | max 0.4 | 70.076 - 77.4 | max 0.007 | max 0.015 | 19 - 22 | max 0.02 | 2.4 - 2.8 | 0.6 - 1 | max 0.01 | max 0.001 |
Assortment | Dimension | Direct. | sв | sT | d5 | y | KCU | Heat treatment |
- | mm | - | MPa | MPa | % | % | kJ / m2 | - |
Sheet, GOST 24982-81 | to 3.9 | 930 | 20 | Guenching 1080 - 1120oC,Cooling water, Ageing 750oC, 5h, | ||||
Bar, GOST 23705-79 | longitudinal | 740 | 620 | 15 | 20 | 400 | Guenching 1080oC, 8h, air, Ageing 700oC, 16h, air, |
Brinell hardness for KhN77TYuR ( ХН77ТЮР ) (quenching) , Bar GOST 23705-79 | HB 10 -1 = 255 - 321 MPa |
Weldability: | hard weldability. |
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 | 1.96 | 12.6 | 8200 | |||
100 | 12.67 | 13.9 | 8180 | 1247 | ||
200 | 12.9 | 15.6 | 8140 | 1262 | ||
300 | 13.3 | 17.2 | 8110 | 1282 | ||
400 | 13.8 | 18.8 | 8070 | 1300 | ||
500 | 14.2 | 20.9 | 8040 | 1308 | ||
600 | 1.57 | 14.6 | 23.5 | 8000 | 1288 | |
700 | 1.47 | 15.1 | 25.1 | 7960 | 1272 | |
800 | 1.28 | 15.5 | 28.2 | 7920 | 1253 | |
900 | 16.2 | 31.1 | 7870 | 1232 | ||
1000 | 16.8 | |||||
T | E 10- 5 | a 10 6 | l | r | C | R 10 9 |
Germany | Japan | |||
DIN,WNr | JIS | |||
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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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