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Gold Binary Eutectic Alloys - Melting Points

Some Au - Gold - binary eutectic alloys and their melting points.

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The melting point of an alloy of two (binary) or more metals depends on the relative proportions of the ingredients.

  • an eutectic mixture is the mixture where the melting point is as low as possible

Binary eutectic Gold - Au - alloys, with composition and melting points are indicated below:

Alloy ComponentWeight of Alloy Component
Melting Point
Bi - Bismuth 85 514 466
Cd - Cadmium 57 773 932
Ce - Cerium 81 793 968
Ge - Germanium 12 629 673
La - Lanthanum 78 834 1042
Mg - Magnesium 62 848 1067
Mn - Manganese 12 1233 1760
Na - Sodium (Natrium) 2.3 1149 1609
Pb - Lead (Plumbum) 85 488 419
Sb - Antimony (Stibium) 24.8 633 680
Si - Silicon 3.15 636 685
Sn - Tin (Stannum) 19.9 551 532
Te - Tellurium 83 689 781
Tl - Thallium 73 404 268
U - Uranium 16 1128 1571
  • T(oC) = 5/9[T(oF) - 32]
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