|
Alloy |
UNS Number |
|
Nimonic 90 |
UNS N07090 |
GENERAL PROPERTIES
Nimonic alloy 90 is a wrought nickel-chromium-cobalt base alloy strengthened by additions of titanium and aluminium. It has been developed as an age-hardenable creep resisting alloy for service at temperatures up to 920°C (1688°F). The alloy is used for turbine blades, discs, forgings, ring sections and hot-working tools.
RESISTANCE TO CORROSION
Nimonic alloy 90 has excellent creep resistance, high creep rupture strength and good ductility. With high chromium content, Alloy 90 offers a good resistance to high temperature corrosion and oxidation resistance.
PHYSICAL PROPERTIES
|
Melting Point (°C) |
Density |
Modulus of Elasticity |
|
1310 – 1370 |
8.18g/cm3 |
213 GPa |
MECHANICAL PROPERTIES
|
Alloy |
Tensile Strength |
Yield Strength |
% Elongation |
|
90 |
116,000 |
105,000 |
20 |
CHEMICAL PROPERTIES
|
Alloy |
Cr |
Cu |
Co |
C |
Mn |
Si |
S |
Fe |
Ti |
Al |
Zr |
B |
Pb |
Ni |
|
90 |
18.0-21.0 |
0.2 |
15.0-21.0 |
0.12 |
1.0 |
1.0 |
0.0015 |
1.5 |
2.0-3.0 |
1.0-2.0 |
0.15 |
0.02 |
0.002 |
Bal |
WELDING
Nimonic 90 is welded using shielded metal-arc welding, gas-tungsten arc welding, gas metal-arc welding, and submerged-arc welding methods.
HEAT TREATMENT
Nimonic 90 is heat treated by annealing at 1080°C (1975°F) for 8h followed by cooling.
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