Tin-bismuth alloy, mold alloy, easily fusible alloy, temperature-controlled low melting point alloy 
 This material is a special multi-eutectic metal, a very low melting point, solidification immediately after put into production use, and a fairly low coefficient of thermal expansion. The same temperature hot water or hot oil soak marked with a low melting point alloy workpiece, it is easy the low-temperature alloys from the mold, fixture or parts recycling can be reused. 
 Tin-bismuth alloy at room temperature, was solid, silver-white, low melting point of only 135 ° C, the hardness is low, the solid-liquid volumetric shrinkage rate of 0.051 percent, with a strong permeability. The principle of the tin-bismuth alloy technology 
 Mold groove test the use of a very small volume shrinkage between the tin-bismuth alloy solid-liquid, can be approximated that the characteristics of solid-liquid constant volume, pouring out of the groove-like appearance, and then the sample, each site size (hot forgings size) and geometry of the overall inspection, which found a lack of processing or design. 
 (Melting point 48 ℃, 60 ℃, 70 ℃, 92 ℃, 125 ℃, 138 ℃, 183 ℃, and so on) according to customer requirements customized temperature melting point alloy. 
 Purposes: 
 A spectacle lens, optical lens and fixture bonding. 
 Radiation therapy, radiation protection gear block; 
 (3) the production of special products with mold, casting the special products; 
 Used for automatic control of electrical and electronic, for the thermal components, materials, insurance, fire alarm devices; 
 Inside and outside the thin-walled elbows and precision machining parts filler alloy line deformation coefficient is very low, and easy to remove, so their special purpose. 
 6. Welding materials: especially suitable for the welding of non-high-temperature material welding and precision-mold interface.