Question

When 1% of tin is added to cartridge metal, it is known as ________

(a) Naval brass

(b) Muntz metal

(c) Red brass

(d) Admiralty metal

This question was addressed to me during an interview.

My enquiry is from Non-Ferrous Metals and Alloys topic in chapter Steel, Timber, Mortar, Plastics, Non-Ferrous Metals and Alloys of Construction & Building Materials

Answer 1

The correct option is (d) Admiralty metal

Best explanation: When 1% of tin is added to cartridge metal, it is known as admiralty metal. However, if it is added to Muntz metal, it is known as naval brass which is an exception to the general rule of brass which says that any element may be present in brass except tin.