Sulfur Bearing Copper UNS C14700

Table of Contents

Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Other Designations
Fabrication and Heat Treatment
      Machinability
      Welding
      Forging
      Hot Working
      Cold Working
      Annealing
Applications

Introduction

UNS C14700 sulfur bearing copper alloy has high corrosion resistance, free machining properties, and 90-96% IACS conductivity. It is generally available in the form of wire and rod.

Chemical Composition

The chemical composition of the UNS C14700 copper alloy is outlined in the following table.

Element Content (%)
Cu 99.6
S 0.40

Physical Properties

The following table shows physical properties of the UNS C14700 copper alloy.

Properties Metric Imperial
Density 8.94 g/cc 0.323 lb/in3
Melting point 1067°C 1953°F

Mechanical Properties

The mechanical properties of the UNS C14700 copper alloy are tabulated below.

Properties Metric Imperial
Tensile strength 221 - 393 MPa 32100 - 57000 psi
Yield strength (depending on temper) 69 - 379 MPa 10000 - 55000 psi
Elongation at break (in 203.2 mm) 52% 52%
Modulus of elasticity 117 GPa 17000 ksi
Poisson’s ratio 0.34 0.34
Machinability (UNS C36000 (free-cutting brass) = 100%) 85% 85%
Shear modulus 44 GPa 6380 ksi

Other Designations

Other designations that are equivalent to the UNS C14700 copper alloy include:

  • ASTM B124
  • ASTM B224
  • ASTM B283
  • ASTM B301
  • SAE J461
  • SAE J463

Fabrication and Heat Treatment

Machinability

The machinability rate of the UNS C14700 copper alloy is 85.

Welding

Brazing, butt welding, and soldering methods are recommended for welding the UNS C14700 copper alloy. Spot welding, oxyacetylene welding, gas shielded arc welding, seam welding, and coated metal arc welding methods are suited to this alloy.

Forging

The UNS C14700 copper alloy can be forged at temperatures ranging from 760 to 871°C (1400 to 1600°F). Forgeability rate of this alloy is 65.

Hot Working

The UNS C14700 copper alloy has excellent hot working abilities.

Cold Working

The UNS C14700 copper alloy has good cold working capacity.

Annealing

Annealing of UNS C14700 copper alloy can be done at 427 to 849°C (800 to 1200°F).

Applications

The UNS C14700 copper alloy can be used in cold-formed parts and crimped conductors.

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