Sep 13 2012
Topics Covered
IntroductionChemical CompositionPhysical PropertiesMechanical PropertiesThermal PropertiesOther DesignationsFabrication and Heat Treatment Annealing Cold Working Welding Forging Machinability Hot Working
Introduction
Copper alloys are many in number and each copper alloy has specific properties based on their environments, manufacturing processes and applications. Given below are a few copper alloy forms that include:
- Beryllium copper
- Nickel silver
- Tin bronze
- Brass
- Phosphor bronze
- Gunmetal
- Aluminum bronze
- Copper-nickel
The datasheet below provides an overview of UNS C41100 copper alloys.
Chemical Composition
The chemical composition of UNS C41100 copper alloys is outlined in the following table.
| Element |
Content (%) |
| Cu |
91 |
| Sn |
0.5 |
| Zn |
8.5 |
Physical Properties
The following table shows the physical properties of UNS C41100 copper alloys.
| Properties |
Metric |
Imperial |
| Density |
8.80 g/cm3 |
0.318 lb/in³ |
Mechanical Properties
The mechanical properties of UNS C41100 copper alloys are displayed in the following table.
| Properties |
Metric |
Imperial |
| Tensile strength |
269-731 MPa |
39000-106000 psi |
| Yield strength (depending on temper) |
76.0-496 MPa |
11000-71900 psi |
| Elongation at break (in 50.8 mm) |
13.00% |
13.00% |
| Machinability (UNS C36000 (free-cutting brass) = 100) |
20 |
20 |
| Shear modulus |
46.0 GPa |
6670 ksi |
| Poisson's ratio |
0.34 |
0.34 |
| Elastic modulus |
117 GPa |
16969 ksi |
Thermal Properties
The thermal properties of UNS C41100 copper alloys are given in the following table.
| Properties |
Metric |
Imperial |
| Thermal expansion co-efficient (@20-300°C/68-572°F) |
18.0 µm/m°C |
10.0 µin/in°F |
| Thermal conductivity (@20°C/ 68°F) |
130 W/mK |
902 BTU in/hr.ft².°F |
Other Designations
Equivalent materials to UNS C41100 copper alloys are:
- ASTM B105
- ASTM B508
- ASTM B591
- MIL B-13501
Fabrication and Heat Treatment
Annealing
UNS C41100 copper alloys can be annealed between 499 and 699°C (930 and 1290°F).
Cold Working
UNS C41100 copper alloys have excellent cold working capacity.
Welding
The welding processes used for UNS C41100 copper alloys include brazing, oxyacetylene welding, Soldering, butt welding, spot welding and gas shielded arc welding. Seam welding and coated metal arc welding are not recommended for these alloys.
Forging
UNS C41100 copper alloys can be forged between 829 and 891°C (1525 and 1635°F).
Machinability
UNS C41100 copper alloys have a machinability rating of 20.
Hot Working
UNS C41100 copper alloys can be hot formed in a good manner.