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Nominal composition:
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|
|
|
|
|
| Aluminium |
(Al) |
10.5% |
| Iron |
(Fe) |
4.8% |
| Nickel |
(Ni) |
5.0% |
| Manganese |
(Mn) |
1.5% |
| Others |
|
max. 0.5% |
| Copper |
(Cu) |
balance |
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The patented process gives AMPCO® M4 mechanical properties beyond the range of commercial nickelaluminium
bronzes, comparable to beryllium copper at a lower cost and without the beryllium copper
industrial hygiene requirements.
Application
AMPCO® M4 was initially developed as an aircraft specification alloy for gears in retractable landing
assemblies, engine spacer bearings and other similar applications. It is rapidly growing in use where
higher mechanical properties at elevated temperatures together with corrosion-resistant properties are
required.
Typical applications include aircraft landing gear bearings and bushings, bending dies (shoes and
mandrels) for the tube bending industry, gear wheels and
wear/guide plates, etc..
Specification: AMS 4590 for extrusions
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