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Alloy Bronze CuAl AMPCO18®

AMPCO® 18 is a high-performance copper alloy used in tooling, steel mills, and watchmaking. It offers higher strength, wear, and corrosion resistance than standard bronze, with tensile strength up to 655 MPa and good durability in demanding applications.


AMPCO® 18 is used mainly in:

  • Plastics Tooling & Mold Making
  • Steel Mills
  • Tube Bending
  • Tube Forming
  • Wear & Corrosion Resistance
  • Watch cases

Chemical composition of AMPCO® 18

Al %Fe %Others %
Cu10.53.50.5

Mechanical properties of AMPCO® 18

PropertyCommercial BronzeAMPCO® 18
Tensile Strength KSI(Mpa)85 (586)95 (655)
Yield Strength KSI(Mpa)32 (220)38 (282)
Elongation %1216
Shear Strength KSI(Mpa)47 (324)58 (400)
Fatigue KSI(Mpa)28 (193)32 (220)
Hardness HBWN.A.183

Delivery program

  • Round extruded Ø 12.7 mm to 76.2 mm
  • Round continuous casted Ø 25.4 mm to 228.6 mm
  • Flat bars thickness 6.4 mm to 101.6 mm
  • Further sizes available upon request.