Our Company

AIM Specialty Materials has been a leading manufacturer of high-quality metals and chemistries since 1936. 

Our Products

AIM Specialty Materials specializes in alloys of indium, tin, lead, bismuth, cadmium, gold and gallium for a wide range of joining applications.

Indium Seals

Due to its softness, indium is considered an ideal material to create a compression seal. AIM supplies indium preforms in various shapes including flat washers, "O" rings, square windows, discs and rectangles.  Foil and wire are available for custom seal fabrications.

The Quality of an Indium Seal Depends On:

The purity and cleanliness of the indium.

  • A minimum of 4Ns purity indium is preferred; some very critical applications may call for 5Ns purity.
  • Heavy contamination with organic compounds should be removed by degreasing.  Surface oxide can be removed by using 50% hydrochloric acid (a 2-4 second dip) or acetone, followed by rinsing in deionized water.

The proper preparation of the surfaces to be sealed.

  • Both seal surfaces and the indium should be kept as clean and dry as possible.
  • Glass and ceramic surfaces to be joined must be cleaned with an appropriate cleaner.  Drying can be performed by passing the parts through a gas flame or in an oven.  For applications where extreme cleanliness is required, cleaning may be performed with electrical plasma or by exposure to ultra-violet light.
  • Metal surfaces to be sealed can be bare, pre-tinned with indium, or plated with indium or silver.  Bare surfaces can be polished using abrasive powders or can be machine finished.  Machine finished surfaces should not be “improved” by using abrasive powders, cloths, etc.

The thickness and shape of the indium.

  • The thickness of the indium may range from less than 0.2mm to 1-2 mm, depending upon the area of the surfaces to be joined and the compressive force on the seal.
  • If the seal is positioned in an "O" ring groove, the seal should be sized so that it overfills the groove by five to fifteen percent when compressed.
  • In some applications, the use of overlapping segments of indium can perform as well as a continuous washer.
  • When making a seal out of indium wire, cut the wire to length, beveling the edges to make the joint.  The freshly cut edges will readily stick together.
  • Correctly formed seals have leak rates of less than 2x10 -7 torr liter/sec -1

Solder for Phototonic Packaging

AIM’s full range of specialty joining materials includes indium and gold/tin solders for photonic packaging applications

Solder Fabrications

AIM’s Specialty solder products are available in a variety of alloys with melting temperatures from 10°C to 400°C

Indium Seals

Due to its softness, indium is considered an ideal material to create a compression seal

Compounds & Chemicals

AIM is a supplier of Indium compounds and chemicals used in a wide array of industries

Fusible Alloys

AIM is a leading supplier of fusible alloys for a broad range of Tool & Die applications

Sputtering Targets

Sputtering targets are used to produce thin films of metals or compounds

Solder Test Kits

AIM offers a broad range of solders to fulfill your most challenging component packaging applications