Technical Data Sheet
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Invar® Spooled Wire

Invar® Spooled Wire is a nickel-iron alloy wire product offered by Goodfellow in their extensive range of specialty metals. With 120 variations, this low expansion alloy wire provides precise dimensional stability across a range of applications. The controlled thermal expansion properties of Invar alloy make it well suited for precision instruments, optics, and aerospace components where maintaining exact dimensions is critical. The combination of strength, workability, and dimensional stability has established Invar alloy wire as an important engineering material for demanding applications.
Diameter: 0.25mm
Temper: Annealed
Length: 100M
Technical Name: Invar© - Controlled Expansion Alloy
Formula: Fe64/Ni36
Density: 8g/cm³
Product Shape: Spooled
UOM Code: 035-911-98
SKU: 1000004778
Product Code: FE02-WR-000150

Tolerances

Wire
Diameter ±10%
Length +5% / -1%

Health hazard/Hazardous to the ozone layer

Serious health hazard

No Minimum order Despatch of products in stock within 48 hours Free technical support *Free delivery worldwide
€267.19
each
  • Buy 5 for €216.43 each and save 19%
  • Buy 10 for €197.72 each and save 26%

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Tolerances

Wire
Diameter ±10%
Length +5% / -1%
Technical Data Sheet
Safety Data Sheet

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Material Properties for Alloys

Mechanical Properties
Element Value
Hardness - Brinell 160
Elongation at break( % ) 45
Modulus of elasticity( GPa ) 140-150
Tensile strength( MPa ) 450-590
Electrical Properties
Element Value
Electrical resistivity( µOhmcm ) 75-85
Magnetic Properties
Element Value
Curie temperature( C ) 279
Thermal Properties
Element Value
Melting point( C ) 1427
Specific heat( J K⁻¹ kg⁻¹ ) 515@23°C
Thermal conductivity( W m⁻¹ K⁻¹ ) 13@23°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 1.7-2@20-90°C
Physical Properties
Element Value
Density( gcm⁻³ ) 8
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