Indium is a chemical element with the symbol In and atomic number 49.

Indium is the softest non-alkali metal. It is a silvery-white metal that resembles tin in appearance. Indium is a highly ductile late transition metal with a bright luster. It is very soft (1.2 on the Mohs scale) and can be cut with a knife like sodium.

Indium is most prominent in the semiconductor industry, in the production of low-melting metal alloys such as solder, high-vacuum seals on soft metals, and indium tin oxide (ITO) transparent conductive coatings on glass. Indium is considered a technologically critical element.

Indium has many semiconductor-related applications. Some indium compounds, such as indium antimonide and indium phosphide, are semiconductors with useful properties: a precursor is usually trimethylindium (TMI), which is also used as a semiconductor dopant in II-VI compound semiconductors. Indium wire is used as a vacuum seal and thermal conductor in cryogenic and ultra-high vacuum applications, and as a gasket deformed to fill gaps in manufacturing applications. Indium is one of many substitutes for mercury in alkaline batteries, preventing zinc from corroding and releasing hydrogen gas.


Physical properties: atomic weight: 114.818

Electronegativity: 1.78

Density: 7.31 g/cm3 (20 ℃) (0-100 ℃)

Melting point: 156.5985 ℃

Boiling point: 2072 ℃


Indium metal we provide:

Indium purity: In≥99.995%

Products: indium ingot, indium foil, indium sheet, indium strip, indium wire, custom indium parts


High-purity Indium (Powder, Granules, Ingot):

Purity: In≥99.999%, silver, aluminum, arsenic, cadmium, copper, iron, magnesium, nickel, lead, sulfur, silicon, tin, thallium, and zinc impurity total content is less than 10ppm;

Ultra-pure indium: In≥99.9999% above, cadmium, copper, iron, magnesium, lead, sulfur, silicon, and tin impurity total content less than 1ppm;

Powder: -100 mesh; – 200 mesh; – 325 mesh;

Granules: 2-6mm, 2-20mm, customized, irregular

Ingot: Customized


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Indium Powder
Indium particles-5N
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Indium Sheet
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Indium Ingot