Indium Solder and Sealing
Indium Solder and Sealing Products
No other metal is as versatile as indium metal. In its various forms it can be used for:
- Sealing in cryogenic applications - stays malleable and ductile below -150°C
- Soldering or fusing applications - melts at temperatures ranging from 6.5°C to 310°C
- High-end device cooling - reduces operating temperatures by up to 10°C
Benefits of Using Indium for Solder and Sealing
- Indium is ductile and malleable which allows it to deform and fill in the uneven microstructure of two mating parts, using only moderate pressure.
- This ductility and malleability is retained at cryogenic temperatures so that an assembly can maintain an effective seal, even in harsh environments.
- With a relatively high thermal conductivity of 86W/mK @ 85°C, indium is widely used in thermal management applications to dissipate the heat produced by electronic components.
- Indium compensates for different coefficients of thermal expansion (CTE) when bonding dissimilar parts.
- Even in small percentages, indium can improve the thermal fatigue performance of solders used in electronics assembly.
- Several indium-containing alloys melt at temperatures less than 180°C, making them ideal for step soldering or applications that require lower reflow temperatures.
- Indium has a low vapor pressure, making it suitable for use in high vacuum applications.
- Indium alloys enable solders to withstand drop tests better than other low melting alloys.
Forms of Indium
The versatility of indium extends to many forms. Indium Corporation has developed the processes necessary to optimize the manufacturability of indium and its alloys into all of these forms:
Indium Solder and Sealing Technical Documents
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Product Data Sheets
Safety Data Sheets
Indium Alloy Blog Posts
An Interview with Lindsay Cannistra: Two Different College Internship Experiences, With A Common Focus On Chemistry
Lindsay has utilized her knowledge of chemistry to explore two very different roles of a scientist: Product development and application research.
We explore indium metal and alloys. The discussion covers physical properties (melting point, coefficient of thermal expansion, thermal conductivity, hardness, vapor pressure, etc.) and applications (thermal interface material, compression sealing, cryogenic use, high vacuum use, etc.).
Estimating the Per Cent Gold In An Alloy: "Wet Gold Technique" Only Works with One Alloying Element… and You Must Know What That Element Is
Folks, The Wet Gold Technique is a simple way to estimate the percentage of gold in a gold alloy. This technique indirectly measures the density of the alloy. From the density of the alloy one can determine the percentage of gold using a formula similar to that in the Indium...
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From One Engineer to Another®
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