Sep 13 2012
Topics Covered
IntroductionChemical CompositionPhysical PropertiesMechanical PropertiesThermal PropertiesOther DesignationsFabrication and Heat Treatment Machinability Welding Hot Working Cold Working Annealing
Introduction
Brass refers to a broad range of copper-zinc alloys comprising a variety of properties such as ductility, strength, hardness, color, machinability, wear-resistance, antimicrobial, corrosion-resistance, and electrical and thermal conductivity. UNS C44300 brass alloys are one of the types of brass, which also are known as admiralty and arsenical brass.
The following datasheet will provide more details about UNS C44300 brass alloys.
Chemical Composition
The following table shows the chemical composition of UNS C44300 brass alloys.
| Element |
Content (%) |
| Cu |
71 |
| Sn |
1 |
| Zn |
28 |
Physical Properties
The physical properties of the UNS C44300 brass alloys are outlined in the following table.
| Properties |
Metric |
Imperial |
| Density |
8.53 g/cm3 |
0.308 lb/in³ |
Mechanical Properties
The mechanical properties UNS C44300 brass alloys are tabulated below.
| Properties |
Metric |
Imperial |
| Tensile strength |
331-379 MPa |
48000-55000 psi |
| Yield strength (depending on temper) |
124-152 MPa |
18000-22000 psi |
| Elongation at break (in 0 mm) |
65% |
65% |
| Creep strength (@425°C, time 3.60e+6 sec/797°F, time 1000 hr, 0.0001) |
0.370 MPa |
53.7 psi |
| Charpy impact |
82.4 J |
60.8 ft-lb |
| Fatigue strength (@# of cycles 1.00e+7, @# of cycles 1.00e+7, source does not state temper) |
115-125 MPa |
16700-18100 psi |
| Elastic modulus |
117 GPa |
17000 ksi |
| Poisson’s ratio |
0.34 |
0.34 |
| Machinability (UNS C36000 (free-cutting brass) = 100) |
30 |
30 |
| Shear modulus |
40.0 GPa |
5800 ksi |
Thermal Properties
The thermal properties UNS C43500 brass alloys are tabulated below.
| Properties |
Metric |
Imperial |
| Thermal expansion co-efficient (@20-300°C/68-572°F) |
20.2 µm/m°C |
11.2 µin/in°F |
| Thermal conductivity (@20°C/ 68°F) |
110 W/mK |
763 BTU in/hr.ft².°F |
Other Designations
Other designations that are equivalent to UNS C43500 brass alloys include:
- ASME SB111
- ASME SB171
- ASME SB359
- ASME SB395
- ASME SB543
- ASTM B111
- ASTM B135
- ASTM B171
- ASTM B359
- ASTM B395
- ASTM B432
- ASTM B543
Fabrication and Heat Treatment
Machinability
The machinability rate of UNS C44300 brass alloys is 30.
Welding
Soldering, brazing, oxyacetylene welding, gas shielded arc welding, spot welding, and butt welding are considered as suitable welding processes, whereas processes such as coated metal arc welding and seam welding are not recommended for UNS C44300 brass.
Hot Working
The hot forming capacity of UNS C44300 is rated as fair with the recommended hot working temperatures ranging between 649 and 788°C (1200 and 1450°F).
Cold Working
UNS C44300 brass alloys have excellent cold working property.
Annealing
The annealing temperature of UNS C44300 brass alloys is between 427 and 593°C (800 and 1100°F).