Copper Alloy (UNS C94330)

Jun 21 2013

Topics Covered

Introduction
Chemical Composition
Physical Properties
Other Designations
Applications

Introduction

Alloys primarily of copper and tin are considered bronzes. Copper tin alloys or tin bronzes are known for their corrosion resistance. They are stronger and ductile than red and semi red brasses. They have high wear resistance and low friction coefficient against steel.

Copper UNS C94330 has good forgeability and excellent hot and cold workability. It is susceptible to galvanic corrosion when combined with zinc, tin, lead, magnesium, aluminum and iron.

The following datasheet discusses the chemical composition and properties of copper UNS C94330.

Chemical Composition

The chemical composition of copper UNS C94330 is given in the following table.

Element Content (%)
Copper, Cu 68.5-75.5
Lead, Pb 21-25
Tin, Sn 3-4
Zinc, Zn 3
Iron, Fe 0.7
Nickel, Ni 0.5
Antimony, Sb 0.5

Physical Properties

The following table discusses the physical properties of copper UNS C94330.

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

Other Designations

An equivalent material to UNS C94330 copper alloy is SAE J460.

Applications

Copper UNS C94330 finds application in:

  • Microwave tubes
  • Coaxial cables
  • Waveguides
  • Glass-to-metal seals
  • Rectifiers and transistor components
  • Vacuum tubes and vacuum seals
  • Hollow conductors
  • Bus bars

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