CuSn12
- ENCC483K
CuSn12 is a tin bronze with about 12% tin, distinguished by high hardness and wear resistance. It offers higher strength than CuSn10 for reliable performance under heavy operating conditions, retaining good sliding and friction properties even under high load. Its corrosion-resistant structure gives long service life in humid, oily and general industrial environments, and its mechanical stability is an advantage where dimensional precision is required.

01Applications
- Worm screws and gears resistant to seawater and wear
- Bearings operating at low speed under heavy load
02Heat Treatment
Typical values
- Hardening
- Not hardenable by heat treatment; strength by temper (cold work)
- Homogenising / softening
- 550–700 °C; air cool
- Stress relieving
- 200–300 °C, 1–2 h
- Delivery condition
- Cast or drawn; hardness according to temper
Heat treatment cycle (schematic)
Values are approximate and for information only; they vary with section size, heat and furnace conditions. Binding values are determined from the manufacturer’s data under laboratory conditions.
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