Fusible alloys, solders
Low melting alloys are defined as alloys with a melting point well below that of tin. Most of these alloys are based on the metals bismuth and indium, in several cases also on gallium. Some of the standard alloys are listed below. Haines & Maassen Metallhandelsgesellschaft has many of these alloys on stock and supplies them at low prices, even in small quantities. Of course we supply only premium alloys to agreed specifications. Many other alloys (according to customers’ requirements) can also be delivered in small quantities at short notice.
Indium based fusible alloys
Eutectic indium-bismuth solder
The system In - Bi provides three eutectic compositions with different melting temperatures. The most common type
66.7In 33.3Bi Melting temperature: ~ 73°C
is often used as an alternative for wood's metal without lead and cadmium. This alloy can also be supplied in form of 1.5 mm wire.
The traditional Field's metal is an eutectic alloy from indium, bissmuth aad tin.
51In 32.5Bi 16.5Sn Melting temperature: ~ 62°C
This alloy is an cost-effective alternative to the In-Bi solder and is also often usden as an alternativ for wood's metal.
Bismuth based alloys
Woods metal is on of the oldest low melting aloy used. Its composition is close to the eutectic point of the bismuth-lead-cadmium-tin system and has a melting point of around 60 °C and is fairly inexpensive.
50Bi 25Pb 12.5Cd 12.5 Sn Melting temperature: ca. 60°C
It is still widely used but more and more replaced by uncritical alternatives. We do not sell this alloy to private persons!
The composition is similar to Wood's metal, but without cadmium.
50Bi 25Pb 25Sn Melting interval: ~ 93-96°C
Bismuth-tin eutectic alloy
Has a higher melting temperature than the above alloys.
58Bi 42 Sn Melting temperature: ~ 138°C
Produces delicate casts which are quite stable even in filigree forms and usually have a metallic silvery finish.
Similar property as Bi - Sn eutectitc alloy but more malleable.
57Bi 42Sn 1Ag Melting temperature: ~ 138°C
Bismut-indium eutectic alloy
Another eutectic composition of the Bi-Sn system. Cost effective as it has a smaller indium value.
67Bi 33Sn Melting temperature: ~ 109°C
Gallium based alloys
Not an alloy but should also be considered due to its low melting point.
100Ga Melting point: 29.8 °C
Further information on our gallium information page.
We offer a close to eutectic gallium-indium alloy with the following composition:
76Ga 24In Melting temperature: ~ 16-17°C
This alloy tends to have a strong tendency for oxidation.
Lowest melting temperature of all our standard alloys.
62Ga 22In 16Sn Melting interval: ca. 11-13°C