CuNi18Zn20 Annealed
The CuNi18Zn20 alloy, also known under the trade name “Copper-Nickel-Zinc 18-20,” is a high-performance metallurgical material recognized for its mechanical properties and corrosion resistance.
Maillechort alloy is used in various industries due to its unique properties:
Cutlery
- Aerospace industry: Thanks to its high strength and dimensional stability, it is used in the manufacture of parts subjected to extreme conditions.
- Marine industry: Its corrosion resistance makes it a material of choice for marine applications, such as marine engine components and navigation equipment.
- Electronics: Although its conductivity is lower than that of pure copper, it is used in certain electronic applications requiring improved mechanical properties.
- Construction: Fasteners and structural components use this alloy for its durability and corrosion resistance.
Chemical Composition
Cu %
60 to 63
Ni %
17 to 19
Fe %
0.3 Max
Mn %
0.5 Max
Pb %
0.03 Max
Sn %
0.03 Max
Others %
0.2 Max
Standards
- CuNi18Zn20
- CW 409J
Product forms
Technical Specifications
- State : Annealed
- State : 400
- Hardness HB : 85-115
- Density : 8,73
Areas of application
- Production of aesthetic parts (Cutlery, Decoration, etc.)
In stock or on request
- Depending on Annealed or Work-hardened condition: Thickness 0.2 to 4 mm - Width 360, 600, 800 mm - Length 2000 mm