rustproof
rust-proof
adjective
Designed or treated to prevent the formation of rust on metal surfaces.
"This outdoor furniture is made from rustproof aluminium."
Thesaurus
Synonyms: rustproofed, rustless
rust-proof
Designed or treated to prevent the formation of rust on metal surfaces.
"This outdoor furniture is made from rustproof aluminium."
Synonyms: rustproofed, rustless