Haynes 188
Description:
Haynes 188 (UNS R30188 / W.Nr. 2.4683) is a cobalt-nickel-chromium-tungsten alloy that com- bines excellent high-temperature strength with very good resistance to oxidizing environ- ments up to 1095¡æ for prolonged exposures, and excellent resistance to sulfate deposit hot corrosion. It is readily fabricated and formed by conventional techniques, and has been used for cast component. Other attractive features include excellent resistance to molten chloride salts, and good resistance to gaseous sulfidation.
Features:
Meets AMS 5608 specifications
Meets AMS 5772 specifications
Enormously beneficial high temperature strength
Provides oxidation resistance up to 2100¡ã F
Excellent post-aging ductility
Galling resistant
Easily strengthened by cold deformation
Applications:
Gas turbine operations
Combusters
Flame holders
Liners
Transition ducts
Exhaust frames
Specifications:
|
UNS |
W. Nr |
Trademark |
GB |
DIN |
NF |
|
R30188 |
2.4683 |
Haynes 188 |
GH5188 |
|
KCN22W |
Chemical Compositions of haynes 188 Nickel Alloy
|
Alloy |
C |
Si |
Mn |
P |
S |
Cr |
Ni |
Co |
W |
La |
Fe |
|
Haynes 188 |
0.05-0.15 |
0.2-0.5 |
¡Ü1.25 |
¡Ü0.02 |
¡Ü0.015 |
21.0-23.0 |
20.0-24.0 |
Bal |
13.0-15.0 |
0.03-0.15 |
¡Ü3.0 |
Typical Physical and Mechanical Properties (RT, Solution annealed)
|
Density, g/cm3 |
Melting Point, ¡æ |
Tensile Strength, MPa |
Yield Strength, MPa |
ELongation, % |
Hardness, HRB |
|
9.07 |
1330-1410 |
991 |
483 |
50.6 |
/ |
Product Forms and Standards
|
Rod, Bar, Wire and Forgings |
AMS 5772 |
|
Plate, Sheet and Strip |
AMS 5608 |
|
Pipe and Tube |
¨C |
|
Welding Product |
¨C |
|
Others |
¨C |