Nispan / Alloy C-902 Wire on Davidon Alloys, Inc.

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	Nispan / Alloy C-902 Wire
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	larger image		A precipitation hardenable Nickel-Iron-Chromium alloy having an outstanding controllable thermoelastic coefficient characteristics and excellent strength and oxidation resistance in high temperature atmospheres. The alloy can be processed to have a constant modulus of elasticity at temperatures -45°C to +65°C. Applications include springs in precise applications, such as watches and weighing machines.

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Approx. Service Temperature

Nispan/Alloy C-902 Wire

Ni (41-43.5%), Cr (4.9-5.75%), Ti (2.2-2.75%), Fe (48%)

8.05 g/cm³

1480 °C

7.6 μ m/m °C At 21-93°C

AMS 5225

For good all round properties - Age : 650 °C – 2 Hrs – A/C
For maximum stability - Stress equalise : 400 °C – 2 Hrs – A/C + Age : 650 °C – 2 Hrs – A/C
For minimum hysterisis & low thermoelastic coefficient - Stress equalise : 400 °C – 2 Hrs – A/C
(Very high precision applications will require each batch to be pilot tested, to determine the specific heat treatment necessary to produce the required thermo-elastic coefficient).

1200–1500 N/mm² (Spring Temper + Aged)
450–650 N/mm² (Annealed)
900–1100 N/mm² (Spring Temper)

62-69 kN/mm²

165-200 kN/mm²

-45 °C to +65 °C (for constant modulus applications)


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Nispan / Alloy C-902 Wire

Item #

Approx. Chemical Composition

Density

Melting Point

Coefficient of Expansion

Standards

Heat Treatments

Approx. Tensile Strength

Rigidity Modulus

Young's Modulus

Approx. Service Temperature