Nickel Alloys

Nickel 220

Application & Characteristics 
Specifically for use as cathodes in electronic receiving tubes.
Chemical Composition (%)
Ni 99.5; C 0.06; Mn 0.20; Fe 0.10; S 0.005; Si 0.05; Cu 0.05; Ti 0.02; Mg 0.04
Physical Properties
Melting Range (°F)2615- 2635
Density (lbs/in³) 68F0.321
Thermal Expansion (in/in °Fx10 to the power of -6)7.9
Electrical Resistivity (ohms/cir mil/ft.) 68F57
Mechanical Properties – Temper = A
Tensile Strength (psi x 10³)65
Yield Strength (psi x 10³)15
Elongation ( % )45
HardnessB65(Rockwell)
Mechanical Properties – Temper = H/2
Tensile Strength (psi x 10³)85
Yield Strength (psi x 10³)55
Elongation ( % )15
HardnessB75(Rockwell)
Mechanical Properties – Temper = H
Tensile Strength (psi x 10³)100
Yield Strength (psi x 10³)90
Elongation ( % )6
HardnessB95(Rockwell)

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