Lowden Ltd
Established 1973

True Alloy (138oC)

True alloy is one of the eutectics, ie it has a sharp melting point (138ºC) and, like the majority of Bismuth based alloys, it expands on solidification, it is free flowing and its versatility makes it a unique tool in a great variety of industries. Its low melting point ensures easy and safe handling and under normal conditions it can be re-used almost indefinitely.
true alloy ingot dimentions

Alloy Eqivelants

AIM 138, CerroTRUE, Indalloy 281, Ostalloy 281, Asarcolow 281, MCP137, Metspec 281



Melting Point: Eutectic 138ºC
Weight lb/in3: Approx 0.32
Max Sustained Safe Load: Approx 500lbs/in²
Brinell Hardness: 22
Growth After Casting: 0.0005" Per inch.


Press sheet forming.
Slush or dip cast moulds.
Jig construction (pick up points).
Fusible Mandrels.
Holding turbine blades etc during machining.
Fusible cores in plastic moulds.
Pantograph and duplicating patterns.

Available Forms

This material is available in the following forms

Ingot: 1.5 Kg larger ingots on request


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