Hiduron 130 (Hidurax Special)

Hiduron^® 130 is a high-strength cupronickel supplied in the hot worked condition.

Aluminium is the alloy’s key strengthening element through the formation of finely dispersed γ′ nickel-aluminium precipitate, strengthening the alloy in a similar way to Alloy K500. As these precipitates are formed through a carefully controlled forging process and naturally aged during cooling, no further heat treatment is necessary.

Being a cupronickel, Hiduron^® 130 has excellent resistance to corrosion by seawater, marine and industrial atmospheres and is highly resistant to crevice corrosion. It has very low magnetic permeability (virtually non-magnetic) and a higher modulus of elasticity than is normally associated with copper alloys.

All these properties are achieved without additional heat treatment and are combined with good machinability and the ability to take an excellent finish.

Major applications for Hiduron^® 130 include subsea hydraulic and electrical connectors (such as flying lead connectors for stab plates), naval winches, seawater valves and marine engineering generally. It is also used in the aerospace industry for heavily stressed airframe components, and in mechanical engineering and hydraulics systems including valve seat inserts and thrust washers for high-performance internal combustion engines.

Hiduron^® 130 is covered by the specifications DIN 2.1504 and DTD 900/4805 and may be supplied to these when required. Equivalent designations include CuNi14Al3Fe1 and UNS C72400.

The alloy is stocked as round bars from ½″-8″ (12.7-203.2 mm) diameter, and can be supplied as bespoke forgings and blocks.