Copper Alloy (UNS C66300)

Topics Covered

Chemical Composition
Physical Properties
Mechanical Properties
Other Designations


Copper is known for its excellent thermal and electric conductivity and good resistance to corrosion. Copper alloys are subjected to heat treatment methods in order to enhance their ultimate tensile strength.

Copper alloy C66300 is available in the form of rolled bars, sheets, strips and plates. It is associated with other alloys such as olin alloy C663, which is a phosphor bronze alloy. This alloy is strengthened by dispersion. Copper C66300 is an alloy of copper and silicon. It is available as five rolled tempers, three cold rolled tempers and one annealed temper.

This datasheet will elaborate on the chemical composition, properties and applications of copper UNS C66300 alloy.

Chemical Composition

The chemical composition of copper alloy UNS C66300 is given in the following table.

Element Content (%)
Copper, Cu +Silver, Ag 84.5-87.5
Tin, Sn 1.5-3
Iron, Fe 1.4-2.4
Phosphorus, P 0.35
Cobalt, Co 0.2
Lead, Pb 0.05
Zinc, Zn Remainder

Physical Properties

The following table discusses the physical properties of copper alloy UNS C66300.

Properties Metric Imperial
Density 8.78 gm/cm3 0.317 lb/in3

Mechanical Properties

The mechanical properties of copper alloy UNS C66300 are tabulated below.

Properties Metric Imperial
Modulus of elasticity 124 GPa 18000 ksi

Other Designations

Looking for equipment to analyze your metals?

Let us source quotes for you for X-Ray Fluorescence Analyzers, Optical Emission Spectrometers, Atomic Absorption Spectrometers or any other analysis instrument you are looking for.

Some of the other designations that are used to denote copper UNS C66300 are as below:

  • ASTM B592


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 C66300 alloy has good forging ability.

Hot working - Copper UNS C66300 alloy has excellent hot working abilities.

Cold working - Copper UNS C66300 alloy has excellent cold working properties.


Copper UNS C66300 is used in the following applications:-

  • Automotive – making of clutch discs
  • Bearings, bushings and sleeves
  • Electrical – terminals, connectors, fuse clips and switch gears
  • Fasteners and lockwashers
  • Hardware- springs, diaphragms, bellows, beater bars
  • Industrial – textile machinery, chemical hardware, bridge bearing plates and perforated sheets.

Tell Us What You Think

Do you have a review, update or anything you would like to add to this article?

Leave your feedback
Your comment type