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HY 188 is a cobalt base superalloy with a unique combination of high temperature strength and oxidation resistance, along with adequate ductility after prolonged exposure to the 1400-1600°F temperature range.Cobalt alloys have an herent advantage over the nickel base grades in high temperature creep.Alloy 188 is solid solution strengthened by a 14% tungsten addition, and further by M6C and M23C6 carbides
HY 188 Chemical composition:
Alloy |
Cr |
Ni |
Co |
W |
La |
B |
C |
Fe |
Mn |
Si |
P |
S |
|
188 |
MIN |
20.0 |
20.0 |
- |
13.0 |
0.02 |
- |
0.05 |
- |
- |
0.2 |
- |
- |
MAX |
24.0 |
24.0 |
Balance |
16.0 |
0.12 |
0.015 |
0.015 |
3.0 |
1.25 |
0.5 |
0.02 |
0.015 |
HY 188 Physical properties:
Density |
9.14 g/cm3 |
Melting point |
1300℃-1330 ℃ |
HY 188 alloy sheet mechanical properties in the room temperature:
Alloy Status |
Tensile strengthRm N/mm² |
Yield strengthRP0.2 N/mm² |
ElongationA5 % |
Solution Treatment |
963 |
446 |
55 |