Jul 16 2013
Topics Covered
Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Applications
Introduction
Copper combines with a wide range of alloying elements to produce alloys such as copper-nickel, aluminum bronze, nickel silver, tin bronze, etc. The addition of alloying elements in turn improves corrosion and wear resistance, and machinability.
The following datasheet discusses the chemical composition and properties of copper UNS C81540.
Chemical Composition
The chemical composition of copper UNS C81540 is given in the following table.
Element |
Content (%) |
Copper, Cu |
95.6 - 97.5 |
Nickel, Ni |
2 - 3 |
Silicon, Si |
0.40 - 0.80 |
Chromium, Cr |
0.10 - 0.60 |
Physical Properties
The following table discusses the physical properties of copper UNS C81540.
Properties |
Metric |
Imperial |
Density |
8.9 g/cm3 |
0.323 lb/in3 |
Mechanical Properties
The mechanical properties of UNS C81540 copper wires are tabulated below.
Properties |
Metric |
Imperial |
Tensile strength |
≥ 550 MPa |
≥ 79800 psi |
Yield strength |
≥ 4 50 MPa |
≥ 65300 psi |
Elongation |
≥ 15% |
≥ 15% |
Brinell hardness |
192 |
192 |
Thermal Properties
The following table discusses the thermal properties of copper UNS C81540.
Properties |
Metric |
Imperial |
Thermal conductivity |
216 W/mK |
125 BTU in/hr.ft2.°F |
Coefficient of thermal expansion |
17.5 µm/m°C |
9.70 µin/in°F |
Applications
Copper UNS C81540 finds application in:
-
Cores and cavities for injection molds
-
Flash weld dies
-
Molds for plastic parts
-
Resistance welding wheels
-
Tip welding and stud welding collets
-
Blow pins and pinch offs for blow mold.