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Alloy 46 Strip (UNS K94600)

Alloy 46 is a nickel-iron alloy containing approximately 46% nickel. It is designed for applications that require controlled thermal expansion and dependable performance in electronic and electrical assemblies.

Why Is Alloy 46 Used in Electronic Components?

The alloy provides stable expansion characteristics and is commonly specified for terminal bands on vitreous enameled resistors and other precision electrical components.

What Is the Chemical Composition of Alloy 46?


Element Composition
Nickel (Ni) 46.0%
Manganese (Mn) 0.2%
Carbon (C) 0.005%
Iron (Fe) Balance

What Are the Physical and Mechanical Properties of Alloy 46?


Property Value
Density 0.295 lb/in3
Specific Gravity 8.17
Tensile Strength 70,000 psi
Yield Strength 32,000 psi
Elongation 30-35%
Hardness 120-135 HV
Elastic Modulus 23 × 106 psi

What Are the Thermal Expansion Properties of Alloy 46?


Temperature Range Thermal Expansion
30-400°C / 86-752°F 8.2-9.2 × 10-6 m/m/°C
30-550°C / 86-1022°F 9.6-10.3 × 10-6 m/m/°C

Where Is Alloy 46 Commonly Used?


  • Vitreous enameled resistor bands
  • Electrical terminals
  • Electronic assemblies
  • Electronic packaging
  • Hermetic components

Alloy 46 contains a higher nickel content and is commonly selected for resistor and electrical component applications where specific thermal expansion properties are required.

Alloy 46 is frequently used in vitreous enameled resistor terminal bands, electronic assemblies, and electrical components requiring controlled thermal expansion.

Yes. Alloy 46 is used in various electronic and sealing applications requiring stable thermal expansion characteristics.

Alloy 46 offers controlled thermal expansion and dimensional stability across a broad operating temperature range.
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