Fusible Low Melt Alloys

Low-Melting or Fusible alloys are silvery white alloys that melt at relatively low temperatures and can easily fuse with other metals. Their general melting point is at temperatures below 450 degrees Fahrenheit (233 degrees Celsius). These metals can feature high percentages of bismuth, lead, tin, indium, and others. Fusible low melt alloys are ideal for many industrial applications because they expand only ~3.3% of their volume when changing from liquid to solid form. They can also be reused since they are rarely consumed in operation.


Applications for Fusible Low Melt Alloys

Depending on what type of fusible low melt alloy you’re using, there are a variety of applications, including:

  • Soldering
  • Fixturing
  • Lens blocking
  • Proof casting
  • Dental models
  • Safety devices and alarms
  • Radiation blocking for X-rays
  • Anchoring
  • Sealing
  • Filler for supporting castings
  • Tube bending
  • Aircrafts
  • Foundry patterns

Types of Fusible Low Melt Alloys

  • AIM 47 low-temperature solder; fixturing delicate parts for machining; lens blocking; proof casting of cavities; dental models; fusible element in safety devices and alarms; radiation blocking for x-rays.
  • AIM 58 lens blocking; proof casting; fusible element in safety devices; anchoring parts for machining; sealing adjustment screws; holding jet engine blades for machining and broaching; filler for supporting castings in interrupted cuts.
  • AIM 70 punch and die in short run sheet metal forming; external and internal support for bending tubing extrusions; holding jet engine blades for machining and broaching; annealing and nitriding seals; nests for feeding stations.
  • AIM 124 fusible element in pressure safety plugs; anchoring metal parts in glass; filler for large diameter tubes for bending; proof casting forging dies; liquid metal in constant temperature and heat treating baths; duplicate patterns in pottery making and foundry; mechanical dentistry.
  • AIM 138 fusible element in safety devices; locator members in aircraft fixtures; holding jet engine blades for machining; joggle dies; foundry patterns; potting molds for electronic encapsulation; low temperature solder; soft metal dies for wax patterns in investment casting.
  • AIM 71-88 for many of the same applications as AIM 70 but where less growth is required; mechanical dentistry.
  • AIM 138-170 closely parallels AIM 138 applications but is normally preferred for fusible mandrels for electroforming; proof casting large dies and molds.
For more information, FREE Technical Assistance and current pricing, contact 888.513.7971, email sales@mayeralloys.com or fill out the form in the Request a Quote link below.

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