Tin handicrafts are decorative and practical tin and alloy products, representing one of several application fields that consume a large amount of tin metal. As a kind of high-grade metal crafts, tin crafts have rich themes and huge market development space. Tin crafts can be made into wine sets, tea sets, tableware, trophies and other utensils with various embossed patterns. These products have the appearance characteristics of silverware, are non-toxic and harmless, the price is lower than that of silverware, and they are both ornamental It can be widely used in higher-end occasions such as hotels and commemorative of various sports competitions; tin craft products made into various round carvings and reliefs can give different cultural meanings and are widely used in group gifts, various Souvenirs for all kinds of activities, souvenirs for tourism and home decoration items, with a broad market space.

(2) Fusible tin alloys

Bismuth, tin, lead, cadmium and indium are all low melting point metals, when these metals are combined in different ratios (binary, ternary or quaternary alloys), alloys with lower melting points can be obtained, these alloys are commonly known as "fusible" alloys. alloy". In addition, these alloys have some valuable properties including: low vapor pressure, good thermal conductivity, ease of processing, high flowability for casting molds, dimensional controllability during solidification, detail reproducibility in casting, and reusability. Fusible alloys fall into two categories: eutectic, which has a single discontinuous melting point, and amorphous, which melts at a certain temperature. Table 1-26 shows some typical alloys and their applications.

(3) Superconducting niobium-tin alloy

NbTi and Nb3Sn are the two main superconducting alloys used today. Among them, the superconductivity of niobium-tin alloy has certain industrial applications. It has a higher critical temperature (18K), reduces cooling, and can support stronger current densities and magnetic fields. The Nb3Sn alloy retains its superconductivity to some extent at magnetic field strengths as high as 2,000,000 Gauss. However, Nb3Sn is extremely brittle, and it is extremely difficult to process it into a wire rod. At present, a new processing method is used to alloy tantalum into niobium to obtain (NbTa)3Sn alloy, which can greatly enhance the characteristics of Nb3Sn.