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Equivalent designations
UNS R30188
Chemical composition
|
% |
Co |
Ni |
Cr |
W |
Fe |
C |
Mn |
Si |
P |
S |
La |
B |
|
min |
balance |
20.0 |
20.0 |
13.0 |
|
0.05 |
|
0.20 |
|
|
0.02 |
|
|
max |
24.0 |
24.0 |
16.0 |
3.0 |
0.15 |
1.25 |
0.50 |
0.020 |
0.015 |
0.12 |
0.015 |
Physical properties
|
Density |
8.98 g/cm3 |
|
Melting range |
1315-1410¡æ |
Features: Haynes 188 combines excellent high temperature strength with very good resistance to oxidizing environments up to 1095¡æ for prolonged exposure, and excellent resistance to sulfate deposit hot corrosion. It also has excellent resistance to molten chloride salts, and good resistance to gaseous sulfidation.
Applications: Military and commercial gas turbine engine combustion cans, transition ducts and after-burner components.
