The main alloying elements of low temperature
tin alloys are lead, antimony, copper and so on. Tin alloy has low melting point, low strength and hardness, high thermal conductivity and low thermal expansion coefficient, atmospheric corrosion resistance, excellent anti-friction performance, and easy to weld with steel, copper, aluminum and its alloys and other materials , is a good solder and a good bearing material.
Commonly used tin alloys are divided into:
①Tin-based bearing alloy. Together with lead-based bearing alloys, they are collectively referred to as babbitt alloys. It contains 3% to 15% of antimony, 3% to 10% of copper, and some alloy varieties also contain 10% of lead. It has a small coefficient of friction, good toughness, thermal conductivity and corrosion resistance, and is mainly used to manufacture sliding bearings.
② Tin solder. It is dominated by tin-lead alloys, and some tin solders also contain a small amount of antimony. Tin alloys containing 38.1% lead are commonly known as solders, with a melting point of about 183°C. They are used in the welding of components in the electrical and instrumentation industry, as well as in the sealing of automotive radiators, heat exchangers, and food and beverage containers.
③ Tin alloys (including lead-tin alloys and lead-free tin alloys) can be used to produce various exquisite alloy jewelry and alloy handicrafts, such as rings, necklaces, bracelets, earrings, brooches, buttons, tie clips, hat ornaments, craft ornaments , alloy photo frames, religious emblems, miniature statues, souvenirs, etc.
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