| Element | Min | Max |
| Carbon | — | 0.07* |
| Manganese | — | 0.35 |
| Silicon | — | 0.25 |
| Sulfur | — | 0.01 |
| Nickel + Cobalt | 99.5 | |
| Iron | — | 0.25 |
| Copper | — | 0.15 |
Specific gravity ……………………. 8.89
Density
lb/cu in ………………………………. 0.321
Average Coefficient of Thermal
Expansion x 10(-6)/°C
(25° to 100°C) ……………………… 13.0
Electrical Resistivity
Ohms cir-mil/ft ………………………. 57
Microhm-cm …………………………. 9.5
Temperature Cofficient of
Resistance(/°C) ………….. 0.004/0.005
Specific Heat, cal/g/°C …………. 0.108
Thermal Conductivity
@ R.T., Btu-in/ft²-hr-°F …………….. 306
W/m-K …………………………………….. 44
Curie Temperature …….. 680°F(360°C)
Melting Point ………… 2624°F(1440°C)
Magnetic Saturation (Telsa) ……. 0.61
Modulus of Elasticity in
Tension(x10(6)psi) ………………….. 30
Magnetostriction @ Saturation
(Bs) x 10(-6) Δ L/L …………………….. 30
| Condition | Ultimate Tensile Strength |
Yield Strength |
% Elongation in 2″ |
| ksi | ksi | ||
| Wire Annealed Hard drawn Strip Annealed Cold Rolled Rod & Bar Annealed Cold drawn |
70 120 70 60 |
25 110 20 20 |
40 5 40 45 |