<Tr> <Td> Sn Cu </Td> <Td> 227 / 250 232 / 332 </Td> <Td>--</Td> <Td> </Td> <Td> For high - temperature uses . Allows removing insulation from an enameled wire and applying solder coating in a single operation . For radiator repairs, stained glass windows, and potable water plumbing . </Td> <Td> 97 </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> </Tr> <Tr> <Td> Sn Cu Ag </Td> <Td> 228 / 314 </Td> <Td>--</Td> <Td> </Td> <Td> High hardness, creep - resistant . For radiators, stained glass windows, and potable water plumbing . Excellent high - strength solder for radiator repairs . Wide range of patina and colors . </Td> <Td> 97 </Td> <Td> </Td> <Td> 0.25 </Td> <Td> 2.75 </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> </Tr> <Tr> <Td> Zn </Td> <Td> 419 </Td> <Td>--</Td> <Td> Pure </Td> <Td> For soldering aluminium . Good wettability of aluminium, relatively good corrosion resistance . </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> 100 </Td> <Td> </Td> <Td> </Td> <Td> </Td> </Tr> <Tr> <Td> Bi </Td> <Td> 271 </Td> <Td>--</Td> <Td> Pure </Td> <Td> Used as a non-superconducting solder in low - temperature physics . Does not wet metals well, forms a mechanically weak joint . </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> 100 </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> </Tr>

What is an alloy state the constituents of solder