Platinum Alloys
These alloys are almost nonoxidizable, and may be prepared by the usual methods of melting, without flux. Nickel 100, tin 10, platinum 1--suitable for table-ware. Nickel 100, tin 20, platinum 1, silver 2--a good mixture for bells. Nickel 100, tin 20, platinum 20--optical and similar instruments. Another non-oxidizable alloy of platinum is composed of nickel 60, brass 130, platinum 70. Platinum alloys readily with steel, and produces a very tough and fine-grained product when present to the extent of 1 per cent. See SILVER; SILVER ALLOYS; SILVERING; NICKEL.