Nickel 270

Annealing Procedure

Heat treat (anneal) at approximately 1500°F (816°C) followed by air cooling.

Applications

Used for components requiring extreme nickel purity, including hydrogen thyratron components, electrical resistance thermometers, fluorescent lamp components, electronic cathodes/anodes, plater bars, and passive cathodes.

Hot Workability

Hot work in the range of approximately 1300 to 1900°F (704 to 1038°C).

Other Physical Properties

Ferromagnetic with a Curie temperature of approximately 355°C (671°F); typical DC magnetic properties include a coercivity of about 3.0 oersteds and saturation induction of about 6050 Gauss.

Principle Design Features

A high-purity grade of nickel (99.9% min nickel plus cobalt) produced by powder metallurgy, exceptionally free of non-metallic inclusions. It has low base hardness and high ductility, permitting heavy cold deformation without reannealing.

Weldability

Nickel 270 can be welded using conventional welding techniques.

Known Forms

Coil

Coil

Foil

Foil

Plate

Plate

Rod

Rod

Round Bar

Round Bar

Sheet

Sheet

Strip

Strip

Wire Flat

Wire Flat

Wire Round

Wire Round

Wire Square

Wire Square

Additional Data

Specifications

N02270,2.4050

Chemical Elements

Carbon0.02 max
Copper0.01 max
Iron0.05 max
Magnesium0.005 max
Manganese0.003 max
NickelBalance
Silicon0.005 max
Sulfur0.003 max
Titanium0.005 max

Physical Properties

Density: 0.322lb/in³Density

Electrical Resistivity: 7.5µΩ·cmElectrical Resistivity

Melting Point: 2650°FMelting Point

Modulus of Elasticity: 30MSIModulus of Elasticity

Specific Heat: 0.11BTU/lb·°FSpecific Heat

Thermal Conductivity

ConditionTemperatureConductivity
Annealed70 °F49.6 BTU/hr·ft·°F

Thermal Expansion

ConditionMinMaxExpansion Coefficient
Annealed70 °F200 °F7.4 μin/in·°F

Mechanical Test Data

FormStrip
ConditionAnnealed
Temperature70°F
Elongation40%
Rockwell HardnessB66
Tensile Strength55 KSI
Yield Strength15 KSI
FormStrip
ConditionCold Rolled
Temperature70°F
Elongation2%
Tensile Strength105 KSI
Yield Strength100 KSI