ThePipingMart Blog Grades Nilo Alloy 36 (ASTM F1684) – Composition, Properties and Uses

Nilo Alloy 36 (ASTM F1684) – Composition, Properties and Uses

Nilo Alloy 36

Alloy 36 is a nickel-iron alloy with many unique properties and applications. It is composed of approximately 36% nickel and 63% iron and lesser amounts of other elements such as chromium, manganese, and silicon. Its mechanical properties are unique in strength, ductility, magnetic permeability, and thermal stability. In addition, its physical properties make it suitable for a wide range of uses in the aerospace, automotive, and medical industries. Let’s take a closer look at the composition, mechanical properties, physical properties, and uses of Nilo Alloy 36.

Alloy 36 Chemical Composition

Invar Alloy 36 comprises approximately 63% iron (Fe) and 36% nickel (Ni). Other elements present in smaller percentages include chromium (Cr), manganese (Mn), silicon (Si), sulfur (S), phosphorus (P), carbon (C) and nitrogen (N). The exact composition can vary depending on the manufacturer or application.

Element Content (%)
Iron, Fe 60
Nickel, Ni 35-38
Others Remainder

Alloy 36 Mechanical Properties

The mechanical properties of Invar Alloy 36 make it an ideal choice for many applications. It has a high yield strength that ensures excellent performance under stress while maintaining good ductility, so it can be formed into various shapes without losing its structural integrity. This alloy also has a high magnetic permeability, making it effective for electrical components such as transformers or motors. Finally, Nilo Alloy 36 offers superior thermal stability, which allows it to maintain its structural integrity even when exposed to extreme temperatures.

Properties Metric Imperial
Tensile strength 490 MPa 71 ksi
Yield strength 240 MPa 34.8 ksi
Modulus of elasticity 140 GPa 20300 ksi

Alloy 36 Physical Properties

In addition to its impressive mechanical properties, Nilo Alloy 36 offers several physical advantages that make it suitable for certain applications. It has excellent corrosion resistance that makes it resistant to rusting or pitting when exposed to water or other corrosive materials. It also has great wear resistance, which makes it ideal for parts that need to withstand friction or abrasion over time. Lastly, this alloy is non-magnetic, so it won’t attract ferrous particles like iron or steel, which could cause damage if left unchecked.

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

Alloy 36 Equivalents

  • UNS K93600
  • UNS K93601
  • ASTN B388
  • B 753
  • DIN1715
  • S.E.W. 385

Alloy 36 Uses

Due to its impressive mechanical and physical properties, Nilo Alloy 36 is used in various industries, including aerospace engineering, automotive manufacturing, nuclear engineering, medical equipment manufacturing and more. It is often used for fasteners such as nuts and bolts due to its exceptional strength and corrosion resistance; however, it can also be used for larger components thanks to its ability to withstand extreme temperatures without losing structural integrity. Additionally, this alloy can be used in electrical components due to its superior magnetic permeability, making it an ideal choice for transformers or motors where heat dissipation needs to be optimized while reducing energy consumption simultaneously.


In conclusion, Nilo Alloy 36 is an impressive nickel-iron alloy with outstanding mechanical and physical qualities that make it suitable for a wide range of applications across multiple industries, including aerospace engineering, automotive manufacturing, nuclear engineering, medical equipment manufacturing etc. Its high-strength corrosion resistance, wear resistance, non-magnetic nature, thermal stability, magnetic permeability etc., make this alloy an indispensable tool for modern engineers looking for versatile solutions with superior performance characteristics. If you’re looking for an alloy with these features, then you should definitely consider investing in some quality made from Nilo Alloy 36!

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