Copper Nickel Alloys

Hiduron is a trademark belonging to Langley Alloys Ltd and applies to a family of high-strength copper – nickel alloys.

NES835 is commonly used to describe the alloy better-known as Hiduron 191 (UNS C72420). The Hiduron family of alloys were developed by Langley Alloys in the late 1930s. This alloy was immediately adopted for naval applications during the second world war. Today, it continues to be used in a wide range of industries and applications. […]

DEF-STAN is shorthand for Defence Standard, a series of material standards developed by the UK’s Ministry of Defence. What is DEF-STAN 02-835? Defence Standard 02-835 covers the “Requirements for High Strength Copper Nickel Manganese Alloy Forgings, Forging Stock Rods and Sections”, which is the alloy better known as Hiduron 191. This alloy was developed by […]

2.0855 is the Werkstoff number for a copper nickel alloy most commonly known as Hidurel 5.

2.1504 is the Werkstoff number for a copper nickel alloy most commonly known as Hiduron 130.

Copper and alloys primarily based upon copper are considered non-magnetic.

The unique patina of copper and its alloys will develop over time and protects the surface from further corrosion.

Copper is an excellent conductor of both heat and electricity, only bettered by silver in both instances.

Cupronickel alloys provide excellent corrosion resistance, particularly in seawater.

In principle, a cupronickel can contain between 1% and 49% nickel, such that copper remains the main element.

Cupronickels have a very low magnetic permeability <1.01.

There is negligible difference in the composition of Alloy K500 versus Alloy 400, but Alloy K500 is appreciably stronger.