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Alloy 48 Strip (UNS K94800)

Alloy 48 is a nickel-iron alloy containing approximately 47.5% nickel. It provides controlled thermal expansion and stable mechanical performance for demanding electronic and electrical applications.

Why Is Alloy 48 Selected for Electronic Applications?

Its balanced combination of thermal stability, strength, and processing characteristics helps manufacturers maintain reliability in precision electronic components and assemblies.

What Is the Chemical Composition of Alloy 48?


Element Composition
Nickel (Ni) 47.5%
Manganese (Mn) 0.2%
Carbon (C) 0.005%
Iron (Fe) Balance

What Are the Physical and Mechanical Properties of Alloy 48?


Property Value
Density 0.297 lb/in3
Specific Gravity 8.20
Tensile Strength 71,000 psi
Yield Strength 34,000 psi
Elongation 30-35%
Hardness 120-135 HV
Elastic Modulus 23 × 106 psi

What Are the Thermal Expansion Properties of Alloy 48?


Temperature Range Thermal Expansion
30-450°C / 86-842°F 9.9-10.5 × 10-6 m/m/°C
30-550°C / 86-1022°F 10.0-10.7 × 10-6 m/m/°C

Where Is Alloy 48 Used?

  • Electronic packaging
  • Connectors
  • Electrical components
  • Hermetic assemblies
  • Precision electronic devices

Yes. Alloy 48 is often used in hermetic and precision electronic applications where dimensional stability is important

Alloy 48 is commonly used in electronic packaging, connectors, sensors, and electrical components requiring controlled thermal expansion.

Alloy 48 contains approximately 47.5% nickel, with the balance primarily iron.

Alloy 48 provides stable thermal expansion characteristics that support reliable performance in electronic and electrical devices.
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