Arsenical copper

Sculpted head of a dignitary from ancient Iran (c.2000 BC) in arsenical copper

Arsenical copper contains up to 0.5% arsenic which, at elevated temperatures, imparts higher tensile strength and a reduced tendency to scaling. It is typically specified in boiler work, especially locomotive fireboxes.^[1]^[2]^[3] It also helps prevent embrittlement of oxygen free copper by bismuth, antimony and lead by the formation of complex oxides. Copper with a larger percentage of arsenic is called arsenical bronze, which can be work-hardened much harder than copper.

References[]

^ Rollason, EC (1949). Metallurgy for Engineers (2nd ed.). London: Arnold.
^ "Archived copy". Archived from the original on 2009-03-19. Retrieved 2010-01-21.{{cite web}}: CS1 maint: archived copy as title (link)
^ "Journmal Institution Locomotive Engineers Volume 42 (1952)".

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[1] Rollason, EC (1949). Metallurgy for Engineers (2nd ed.). London: Arnold.

[2] "Archived copy". Archived from the original on 2009-03-19. Retrieved 2010-01-21.{{cite web}}: CS1 maint: archived copy as title (link)

[3] "Journmal Institution Locomotive Engineers Volume 42 (1952)".

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Arsenical copper

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