This is a nickel-chromium alloy, that can be hardened by precipitation, with the addition of Aluminium and Titanium, used mainly for high-temperature applications.
The technical data refer to the raw, cold-drawn wire supplied for springs (spring temper) subjected to artificial ageing after forming, by heat treatment at 650 ° C for 4 hours.
Chemical composition, mass%:
Ni+Co | Cr | Fe | Ti | Al | Nb+Ta |
---|---|---|---|---|---|
70 min | 14-17 | 5-9 | 2.25-2.75 | 0.4-1.0 | 0.7-1.2 |
Density | Elastic Modulus E | Shear modulus G | Tensile strength | Working temperature |
---|---|---|---|---|
8.28 Kg/dm3 | 218 KN/mm2 | 75.8 KN/mm2 | 1350-1750 N/mm2 | -200 +370 °C |