Nickel-aluminum bronze alloys
Copper alloys with aluminum (6–13%), nickel (up to 7%), and iron (up to 7%) forming a protective aluminum-oxide barrier — ideal for severe marine environments, biostatic and resistant to corrosion fatigue.
Characteristics
Family characteristics
- 6–13% aluminum, iron up to 7%, nickel up to 7%
- Aluminum-oxide barrier protects against oxidation
- Excellent seawater and SO₂ resistance
- Resists chloride stress-corrosion cracking
- Biostatic — inhibits marine fouling
- Distinctive golden color
Typical applications
Typical applications
- Aerospace components (landing gear, bearings)
- Marine propellers and pumps
- Retention rings and structural bushings
- High-pressure valve seats
- Non-sparking tools
Available alloys
Available alloys
- BM 955UNS C95500ASTM B150AMS 4880
High-strength cast nickel-aluminum bronze with excellent performance in glass molds, aircraft parts, helical gears, and high-load bushings.
- BM 630UNS C63000ASTM B505AMS 4640
Wrought nickel-aluminum bronze with high fatigue and corrosion resistance, plus non-sparking properties for explosive areas.
- BM 280HTAMS 4590AMS 4881
Premium family member, heat-treated for aerospace service and high loads at elevated temperatures.