Annealed (OS015) C43400 Brass
OS015 C43400 brass is C43400 brass in the OS015 (annealed to 0.015mm grain size) temper. It has the second lowest strength and second highest ductility compared to the other variants of C43400 brass. The graph bars on the material properties cards below compare OS015 C43400 brass to: wrought brasses (top), all copper alloys (middle), and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it's 50% of the highest, and so on.
Mechanical Properties
Elastic (Young's, Tensile) Modulus
110 GPa 16 x 106 psi
Elongation at Break
47 %
Poisson's Ratio
0.33
Rockwell F Hardness
70
Rockwell Superficial 30T Hardness
30
Shear Modulus
42 GPa 6.1 x 106 psi
Shear Strength
260 MPa 37 x 103 psi
Tensile Strength: Ultimate (UTS)
330 MPa 48 x 103 psi
Tensile Strength: Yield (Proof)
130 MPa 18 x 103 psi
Thermal Properties
Latent Heat of Fusion
190 J/g
Maximum Temperature: Mechanical
170 °C 340 °F
Melting Completion (Liquidus)
1020 °C 1870 °F
Melting Onset (Solidus)
990 °C 1810 °F
Specific Heat Capacity
380 J/kg-K 0.092 BTU/lb-°F
Thermal Conductivity
140 W/m-K 79 BTU/h-ft-°F
Thermal Expansion
19 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
31 % IACS
Electrical Conductivity: Equal Weight (Specific)
32 % IACS
Otherwise Unclassified Properties
Base Metal Price
28 % relative
Density
8.6 g/cm3 540 lb/ft3
Embodied Carbon
2.7 kg CO2/kg material
Embodied Energy
44 MJ/kg 19 x 103 BTU/lb
Embodied Water
320 L/kg 38 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
120 MJ/m3
Resilience: Unit (Modulus of Resilience)
73 kJ/m3
Stiffness to Weight: Axial
7.2 points
Stiffness to Weight: Bending
19 points
Strength to Weight: Axial
11 points
Strength to Weight: Bending
12 points
Thermal Diffusivity
41 mm2/s
Thermal Shock Resistance
11 points
Alloy Composition
| Cu | 84 to 87 | |
| Zn | 11.4 to 15.6 | |
| Sn | 0.4 to 1.0 | |
| Fe | 0 to 0.050 | |
| Pb | 0 to 0.050 | |
| res. | 0 to 0.5 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Further Reading
CRC Materials Science and Engineering Handbook, 4th ed., James F. Shackelford et al. (editors), 2015