Copper Alloy (UNS C66800)

Jul 17 2013

Topics Covered

Introduction
Chemical Composition
Physical Properties
Fabrication
Applications

Introduction

Copper is an extremely useful metal and its high thermal and electrical conductivity find a number of applications in fields such as electrical component manufacture etc. The nature and the amount of impurities that are alloyed with copper determine the application for which the alloy is used for.

Copper C66800 is an alloy of manganese, copper and zinc and is referred to as manganese bronze. This alloy is available in various shapes like round, square, etc. This alloy exhibits good corrosion resistance to sea water.

This datasheet will elaborate on the chemical composition, properties and applications of copper UNS C66800 alloy.

Chemical Composition

The chemical composition of copper alloy UNS C66800 is given in the following table.

Element Content (%)
Copper, Cu +Silver, Ag 60-63
Manganese, Mn 2-3.5
Silicon, Si 0.5-1.5
Lead, Pb 0.5
Iron, Fe 0.35
Tin, Sn 0.3
Aluminum, Al 0.25
Nickel, Ni 0.25
Zinc, Zn Remainder

Physical Properties

The following table discusses the physical properties of copper alloy UNS C66800.

Properties Metric Imperial
Density 8.9 gm/cm3 0.323 lb/in3

Fabrication

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Some of the methods adopted for fabricating this alloy are coining, bending, coppersmith, upsetting and drawing. Other methods of fabrication are knurling, roll threading, spinning, swaging and stamping.

Forging - Copper UNS C66800 alloy has good forging ability.

Hot working - Copper UNS C66800 alloy has excellent hot working abilities.

Cold working - Copper UNS C66800 alloy has excellent cold working properties.

Applications

Copper UNS C66800 is used in the following applications:

  • Gears, sealing rings, thrust bearings, bushings, piston heads
  • Cams, spindles, bearings, idler pins, connecting rods, valve seats
  • Marine- pump parts, hardware, high strength

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