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R.R. Alloys

Home > Scrap General > Scrap Metal Commodities Reference - R > R.R. Alloys

R.R. Alloys

A series of high-strength heat treatable aluminium alloys developed by Rolls-Royce, Ltd. A typical alloy of this type (R.R. 56) is the following:

Copper 2.0%
Nickel 1.3%
Magnesium .8%
Iron 1.4%
Titanium .1%
Silicon .7%
Aluminium 93.7%

The above typical R.R. Alloy has a melting point of 635 deg C, and has a specific gravity of 2.75. All such alloys are readily worked and modified in properties, and they are much used for aircraft work, Air Ministry specifications and, also in automobile engineering.

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