Aug 6 2012
Table of Contents
IntroductionChemical CompositionPhysical PropertiesMechanical PropertiesOther DesignationsFabrication and Heat Treatment Machinability Welding Forging Hot Working Cold Working AnnealingApplications
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.