NILO 52 Alloys (UNS N14052)

Jul 10 2013

Topics Covered

Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Other Designations
Fabrication
     Cold working
     Annealing
Applications

Introduction

NILO is an alloy of nickel and iron, in which the nickel composition is varied as per the requirement. NILO alloys are categorized as controlled expansion alloys. Controlled expansion alloys exhibit a low coefficient of expansion in both low and high temperature ranges and are tough and ductile. NILO alloys are named as NILO 36, 42, 48, 52 and NILO alloy K depending on the nickel content.

NILO 52 alloy is most suitable for use in soft glasses. It exhibits a low dispersion and hence is suitable for use in high frequency applications. It is known for its almost constant coefficient of thermal expansion up to approx. 565°C (1050°F). The nickel content in this alloy is 52%. NILO 52 alloy is available in the form of rods, sheets, strip and coil.

This datasheet will look into the chemical composition, properties and applications of NILO 52 alloy.

Chemical Composition

The chemical composition of NILO 52 alloy is given in the following table.

Element Content (%)
Nickel, Ni 52
Iron, Fe Remainder

Physical Properties

The following table discusses the physical properties of NILO 52 alloy.

Properties Metric Imperial
Density 8.3 gm/cm3 0.3 lb/in3

Mechanical Properties

The mechanical properties of NILO 52 alloy after annealing are tabulated below.

Properties Metric Imperial
Tensile strength 552 MPa 80 ksi
Yield strength 276 MPa 40 ksi
Modulus of elasticity 159 GPa 23000 ksi

Other Designations

Some of the other designations that are used to denote NILO 52 alloy are as below:

  • UNS N14052
  • ASTM F30
  • Pernifer 50

Fabrication

Cold working

Cold working is not suitable for this alloy as it tends to distort the coefficients of thermal expansion.

Annealing

NILO 52 alloy may be annealed at 850 - 1000°C (1560 - 1830°F).

Applications

The NILO 52 alloy is used in the following applications:

  • Glass to metal sealing
  • Soft glass and ceramic

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