Copper Nickel Silver Alloy (UNS C74300)

Jul 26 2013

Topics Covered

Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Applications

Introduction

Copper and its alloys are the most versatile engineering materials. The major uses of pure, unalloyed copper are based on the high electrical and thermal conductivity of copper.

Copper UNS C74300 is copper nickel silver alloy that exhibits high tarnish and chemical corrosion resistance, and good strength. The following datasheet discusses the chemical composition and properties of copper UNS C74300.

Chemical Composition

The chemical composition of copper UNS C74300 is given in the following table.

Element Content (%)
Copper, Cu 63-66
Nickel, Ni 7-9
Manganese, Mn 0.5
Iron, Fe 0.25
Lead, Pb 0.09

Physical Properties

The following table discusses the physical properties of copper UNS C74300.

Properties Metric Imperial
Density 8.65 g/cm3 0.313 lb/in3

Mechanical Properties

The mechanical properties of UNS C74300 copper wires (H02-Temper) are tabulated below.

Properties Metric Imperial
Tensile strength 370 – 480 MPa 53.66 – 69.62 ksi
Elongation >30% >30%

Applications

Copper UNS C74300 finds application in:

  • Model railway tracks
  • Scrub sponges
  • Bridges for musical instruments
  • Spectacle frames, optical industry
  • Connection wire, spring wire
  • Clips for pens, zip fasteners. 

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