[Gr. στερρό-ς stiff, hard.] An alloy of copper and zinc, with a small amount of iron and tin. Also shortened sterro.
1865. Sci. Rev., Nov., 133/2. Sterrometal.
1869. Spons’ Dict. Engin., I. 177. Sterro-metal.
1881. Tripplin & Rigg, Saunier’s Watchmakers’ Handbk., 74. Sterro … is an alloy containing 56 per cent. copper, 41 zinc, 2 tin, and 1 iron.
1884. C. G. W. Lock, Workshop Rec., Ser. III. 42/1. Sterro-metal … is a very strong and elastic alloy used by Austrian engineers for hydraulic press pumps.
