classification
Lead tin alloy can be divided into:
① Lead or tin based bearing alloys. Together with lead base bearing alloy, it is called babbitt alloy. It contains 3%~15% antimony, 3%~10% copper, and some alloys also contain 10% lead. Antimony and copper are used to improve the strength and hardness of alloys. It has small friction coefficient, good toughness, thermal conductivity and corrosion resistance, and is mainly used to manufacture sliding bearings.
Aluminium tin alloy
Aluminium tin alloy
② Lead tin solder. It is mainly composed of tin lead alloy, and some tin solders also contain a small amount of antimony. Tin alloy containing 38.1% lead is commonly known as soldering tin, with a melting point of about 183 ℃. It is used for the welding of components in the electrical instrument industry, as well as the sealing of automotive radiators, heat exchangers, food and beverage containers.
③ Lead tin alloy coating. Using the corrosion resistance of tin alloy, coating it on the surface of various electrical components has both protective and decorative properties. Commonly used are tin lead series and tin nickel series coatings.
④ Lead tin alloy (including lead tin alloy and lead-free tin alloy) can be used to produce all kinds of exquisite alloy ornaments and alloy handicrafts, such as rings, necklaces, bracelets, earrings, brooches, buttons, tie clips, hats, craft decorations, alloy photo frames, religious emblems, miniature statues, souvenirs, etc.
