Nimonic 90 wire, A Nickel-Chromium-Cobalt alloy being precipitation hardenable, having high stress-rupture strength and creep resistance at high temperatures up to about 950oC (1740oF). It is widely used and a well proven alloy in high temperature conditions.
Nimonic 90 is also known as Superimphy 90, Pyromet 90, and Udimet 90.
The chemical composition of Nimonic 90 wire is given in the following table.
Element | Content (%) |
---|---|
Nickel, Ni | Bal |
Chromium, Cr | 18-21 |
Iron, Fe | ≤1.5 |
Cobalt, Co | 15-21 |
Titanium, Ti | 2-3 |
Aluminum, Al | 1.0-2.0 |
Manganese, Mn | ≤1 |
Silicon | ≤1 |
Others | Remainder |
The following table discusses the physical properties of Nimonic 90.
Properties | Metric | Imperial |
---|---|---|
Density | 8.18 gm/cm3 | 0.296 lb/in3 |
The mechanical properties of Nimonic 90 wire are tabulated below.
Properties | ||||
---|---|---|---|---|
Condition | Approx. tensile strength | Approx. operating temperature depending on load^^ and environment | ||
N/mm² | ksi | °C | °F | |
Annealed | 800 – 1000 | 116 – 145 | – | – |
Annealed + Aged | 1200 – 1400 | 174 – 203 | up to 550 | up to 1020 |
Spring Temper | 1200 – 1500 | 175 – 218 | – | – |
Spring Temper + Aged | 1500 – 1800 | 218 – 261 | up to 350 | up to 660 |