- softer material, easier for key cutters and locksmiths, any key cutter can cut them, best for locksmiths when hand-making keys
- gentler on lock internal parts, but brass that wears off the key will accumulate in the lock
- keys wear faster (so locks wear slower)
- not as strong as steel: brass keys can break or twist more readily
- common for most British and US locks
- appropriate for locks with brass internal parts (although brass on brass will still wear especially if not kept clean and well lubricated). | - harder material, not suitable for locksmiths to hand-make keys, and not all key cutters will cut them
- not so gentle on lock internal parts
- key wear is negligible (but locks wear faster)
- very strong: keys are difficult to break or twist, best in extreme cold climates or sticking locks
- common for European cars and motorcycle locks
- appropriate for locks with steel internal parts, but should not cause problems with any lock that's kept clean and well lubricated |
