ThePipingMart Blog Grades Nilo Alloy 42 – Composition, Properties and Uses

Nilo Alloy 42 – Composition, Properties and Uses

 Nilo Alloy 42

Nilo alloy 42 is an iron-nickel-cobalt base superalloy that has become increasingly popular in the past few years. It is known for its excellent creep, oxidation resistance, and ability to withstand high temperatures. This makes it ideal for use in various applications, such as aerospace, petrochemical, and nuclear industries. This article will discuss the composition, mechanical properties, physical properties, and uses of Nilo alloy 42.

Alloy 42 Composition

UNS K94100 contains approximately 22% nickel and 13% cobalt, with small amounts of chromium (0.12%), molybdenum (0.30%), tungsten (0.50%), silicon (0.15%), manganese (0.20%) and aluminium (0.30%). This combination of elements makes it an excellent choice for applications requiring high temperatures or extreme conditions due to its high strength-to-weight ratio and superior corrosion resistance compared to other alloys in the same family.

Element Content (%)
Iron, Fe 55
Nickel, Ni 42
Others Remainder

 Nilo Alloy 42 Mechanical Properties

Nilo alloy 42 has a tensile strength of 140 ksi (960 MPa) at room temperature and 90 ksi (620 MPa) yield strength. In addition to its strength properties, it exhibits good ductility with an elongation percentage greater than 25%. It also retains strength at elevated temperatures up to 1100°F (593°C).

Properties Metric Imperial
Tensile strength 490 MPa 71 ksi
Yield strength 250 MPa 36.3 ksi
Modulus of elasticity 150 GPa 21755 ksi

 Nilo Alloy 42 Physical Properties

The density of Nilo alloy 42 is 0.304 lb/in3(7484 kg/m3) with a melting point range between 2300-2450°F (1260-1340°C). Its thermal conductivity is 16 BTU•in/ft2•hr•°F (22 W/m•K) at room temperature, while its coefficient of thermal expansion is 7×10-6/°F(13 x 10-6/K). Its electrical resistivity is 82 microhm•in at 68 °F(20 °C).

Properties Metric Imperial
Density 8.11 gm/cm3 0.293 lb/in3

 Nilo Alloy 42 Equivalent

  • UNS K94100
  • ASTM F30
  • B 753
  • DIN 17745
  • S.E.W 385

 Nilo Alloy 42 Uses

Nilo alloy 42 has been used in many industrial applications due to its unique properties, including corrosion resistance, heat resistance, and high tensile strength. Some common applications include gas turbine blades, aircraft exhaust systems, and nuclear plant components such as piping systems or fasteners; petrochemical components like valves or pumps; medical implants; and aerospace components like bearings or hubs.


In conclusion, Nilo alloy 42 is an iron-nickel-cobalt-based superalloy that offers superior creep and oxidation resistance compared with other alloys in the same group. It can be used in various industries due to its excellent mechanical properties, such as high tensile strength and ductility, even at elevated temperatures up to 1100°F(593°C). It also shows good corrosion resistance, making it ideal for applications such as gas turbine blades, aircraft exhaust systems, nuclear plant components, petrochemical components, medical implants, and aerospace components. Website owners and SEO newbies looking into using this material for their products or services should consider the advantages they get from using it due to the above qualities. You can consult your local supplier or continue researching online for more information on this material. We hope this ultimate guide to Nilo alloy 42 was useful! If you have questions about this material, feel free to ask us! We’d love to hear from you!

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