Heat of Fusion Question

[Kvm90]

Hey all, I'm working in a lab and am trying to build a heat sink. Basically, I need to find the heat of fusion of a certain metal alloy (which contains multiple elements).

The alloy consists of 50% Bismuth 26.7 Lead 13.3 Tin and 10% Cadmium. How do I find the heat of fusion? Is it the average of the individual heat of fusion values for each element?

Quick help would be great!

[SpectraCat]

Hey all, I'm working in a lab and am trying to build a heat sink. Basically, I need to find the heat of fusion of a certain metal alloy (which contains multiple elements).

The alloy consists of 50% Bismuth 26.7 Lead 13.3 Tin and 10% Cadmium. How do I find the heat of fusion? Is it the average of the individual heat of fusion values for each element?

Quick help would be great!

Here is a page with that info for Wood's metal, but in rather arcane btu/lbs units (arcane for science anyway).
http://www.alchemycastings.com/lead-products/fusible.htm

One note of caution .. I assume you know how toxic lead and cadmium are? Since you are using it for a heat sink, you really need to be careful that it doesn't get hot enough to volatilize. The best choice would be to have the melt completely contained in a vapor tight vessel, if that is possible for your application.

[Kvm90]

Thank you very much. I will be sure to use care when handling the heat sink.