Indium
MATERIAL OVERVIEW
Characteristics: Ductile, shiny, silver-white metal, softer than lead. Soluble in acids. Insoluble in alkalies. Corrosion-resistant at room temperatures, but oxidizes readily at higher temperatures. Nontoxic.
Indium (In) was discovered in 1863, by Ferdinand Reich and Hieronymus Theodor Richter while spectro-graphically analyzing a zinc ore sample where they saw the presence of a blue spectral line rather than the anticipated green thallium line. Realizing they had discovered a new element they named the new metal Indium after the blue (Indigo) spectral line.
Indium is a post transition element with the atomic number 49 and displays intermediate chemical properties between gallium and thallium. This rare material is a silvery element with a bright sheen, soft and malleable with a relatively low melting temperature below 160 C, making it especially useful in the manufacture of alloys, solders and in fusing material. Today most of the world's indium is produced in Canada and China.
At ESPI Metals we produces a variety of finished indium products. We can supply ingots in sizes and weights based upon our customer's specifications. We produce indium shot from ingot. We roll sheet and foil and extrude rod and wire. We also manufacture preforms to our customer's requirements.
Starting from refined indium ingot we roll indium to a variety of widths and thicknesses. Rolled material starts at 0.001"/0.0254mm and can be as thick as 1" or more if required. The maximum width of rolled material is six to twelve inches depending on thickness. Wider material is possible, however call or email your requirement.
Extruded wire and rod starts at 0.010/0.25mm. Wire and rod diameters are available in 0.001"/0.025mm diameter increments.
We also produce a variety of indium alloys. Indium alloys can be found in our online catalog page 'Indium/Specialty Alloys'.
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For more technical and historical information see: en.wikipedia.org/wiki/Indium
GENERAL PROPERTIES
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Symbol: |
In |
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Atomic Number: |
49 |
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Atomic Weight: |
114.82 |
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Density: |
7.31 gm/cc |
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Melting Point: |
156.61 oC |
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Boiling Point: |
2080 oC |
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Thermal Conductivity: |
0.818 W/cm/K @ 298.2 K |
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Electrical Resistivity: |
8.37 microhm-cm @ 20 oC |
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Electronegativity: |
1.7 Paulings |
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Specific Heat: |
0.056 Cal/g/K @ 25 oC |
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Heat of Vaporization: |
53.7 K-Cal/gm atom at 2080 oC |
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Heat of Fusion: |
0.781 Cal/gm mole
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INDIUM VIDEO CLIPS
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Indium Metal
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TYPICAL ANALYSES - Impurities in ppm
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Material / Purity: |
4N |
5N |
6N |
| Al | 1 | <1 | - |
| Cd | 1 | <1 | <0.007 |
| Ga | 1 | - | 0.001 |
| Cu | 10 | 0.1 | 0.022 |
| Ni | 10 | 1 | - |
| Zn | 2 | <1 | - |
| Sb | 1 | <0.1 | - |
| Pb | 10 | <0.1 | 0.1 |
| As | 1 | <0.1 | - |
| Bi | 5 | <0.1 | 0.23 |
| Hg | 1 | <1 | 0.002 |
| Tl | 1 | <1 | 0.094 |
| Fe | 1 | <1 | - |
| Sn | 7 | <1 | 0.11 |
INDIUM WIRE
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Material |
Purity |
| Indium Wire .010" | 4N, 5N |
| Indium Wire .015" |
4N, 5N |
| Indium Wire .020" | 4N, 5N |
| Indium Wire .025" | 4N, 5N |
| Indium Wire .030" | 4N, 5N |
| Indium Wire .040" | 4N, 5N |
| Indium Wire .060" | 4N, 5N |
| Indium Wire .080" | 4N, 5N |
| Indium Wire .090" | 4N, 5N |
Wire diameters are available in increments of .001”. Wire is spooled to order and sold by the foot or meter. Call or This email address is being protected from spambots. You need JavaScript enabled to view it. for additional diameters or custom sizes. For Ready-to-Ship indium wire click here. Indium Ready-to Ship
INDIUM ROD
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Material |
Purity |
| Indium Rod .0625” | 4N, 5N |
| Indium Rod .125” | 4N, 5N |
Indium Rod .250”  |
4N, 5N |
| Indium Rod .500” | 4N, 5N |
| Indium Rod .625” | 4N, 5N |
| Indium Rod .750” | 4N, 5N |
| Indium Rod 1” | 4N, 5N |
Additional diameters can be drawn in 2-3 days. Rod is cut to order and sold by the inch or foot. Call or This email address is being protected from spambots. You need JavaScript enabled to view it. for additional diameters or custom sizes. For Ready-to-Ship indium rod click here. Indium Ready-to Ship
INDIUM FOIL
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Material |
Purity |
| Indium Foil .001” | 4N, 5N |
| Indium Foil .002” | 4N, 5N |
| Indium Foil .003” | 4N, 5N |
| Indium Foil .004” | 4N, 5N |
Indium Foil .005”   |
4N, 5N |
| Indium Foil .006” | 4N, 5N |
Indium Foil .007”   |
4N, 5N |
Indium Foil .008”   |
4N, 5N |
| Indium Foil .009” | 4N, 5N |
Foil is cut to order and sold by the square inch or square foot. Call or This email address is being protected from spambots. You need JavaScript enabled to view it. for additional thicknesses or custom sizes. For Ready-to-Ship indium foil click here. Indium Ready-to Ship
INDIUM SHEET
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Material |
Purity |
| Indium Sheet .010" | 4N, 5N |
Indium Sheet .015"   |
4N, 5N |
Indium Sheet .020"   |
4N, 5N |
Indium Sheet .050"   |
4N, 5N |
Sheet thicknesses are available in increments of .001”. Sheet is cut to order and sold by the square inch or square foot. Call or This email address is being protected from spambots. You need JavaScript enabled to view it. for additional thicknesses or custom sizes. For Ready-to-Ship indium sheet click here. Indium Ready-to Ship
INDIUM SPUTTERING TARGETS
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Material |
Purity |
| Indium Sputtering Target 2"D X .125"T | 4N, 5N |
| Indium Sputtering Target 2"D X .250"T | 4N, 5N |
| Indium Sputtering Target 3"D X .125"T | 4N, 5N |
| Indium Sputtering Target 3"D X .250"T | 4N, 5N |
| Indium Sputtering Target 4"D X .125"T | 4N, 5N |
| Indium Sputtering Target 4"D X .250"T | 4N, 5N |
| Indium Sputtering Target 5"D X .125"T | 4N, 5N |
| Indium Sputtering Target 5"D X .250"T | 4N, 5N |
| Indium Sputtering Target 6"D X .125"T | 4N, 5N |
| Indium Sputtering Target 6"D X .250"T | 4N, 5N |
Targets are made to order and packaged individually. Call or This email address is being protected from spambots. You need JavaScript enabled to view it. for additional diameters, thicknesses or custom sizes.
INDIUM POWDER, SHOT, PELLETS, & INGOT
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Material |
Purity |
Indium Shot 3-6mm  |
4N, 5N, 6N |
| Indium Pellets .125"D X .125"L | 4N, 5N |
| Indium Pellets .250"D X .250"L | 4N, 5N |
| Indium Ingot | 4N, 5N |
| Indium Powder-325 Mesh | 5N |
Powder, shot, pellets, and ingots are packaged to order and sold by the gram or kilogram. Call or This email address is being protected from spambots. You need JavaScript enabled to view it. for additional specifications or custom requirements.
INDIUM COMPOUNDS
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Material |
Purity |
Indium Antimonide Pieces  |
5N |
| Indium Oxide In2O3 -325 Mesh |
5N |
| Indium Tin Oxide Pieces |
4N, 5N |
| Indium Tin Oxide -325 Mesh |
3N |
Compounds are packaged to order and sold by the gram or kilogram. Call or This email address is being protected from spambots. You need JavaScript enabled to view it. for additional specifications or custom requirements.
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ALLOYS 
