Admiralty metal

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An old term for a Brass alloy containing 70-73% Copper, about 1% Tin and 0.01% Arsenic with the balance composed of Zinc. Small amounts of additional tin increase the hardness and strength while decreasing the ductility. This alloy offers good resistance to dilute acids and alkalis, Sea water and sulfurous atmospheres (Lewis, 1993)

Synonyms and Related Terms

admiralty alloy; tin brass; latão do almirantado (Port.)

Physical and Chemical Properties

Melting Point 900-953
Density 8.53 g/ml

Resources and Citations

  • G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 17, 115
  • David C. Scott, Metallography and Microstructure of Ancient and Historic Metals, The Getty Conservation Institute, Los Angeles, 1991