Annealed (OS025) C43500 Brass
OS025 C43500 brass is C43500 brass in the OS025 (annealed to 0.025mm grain size) temper. It has the second lowest strength compared to the other variants of C43500 brass. The graph bars on the material properties cards below compare OS025 C43500 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
46 %
Poisson's Ratio
0.32
Rockwell F Hardness
70
Rockwell Superficial 30T Hardness
31
Shear Modulus
42 GPa 6.0 x 106 psi
Shear Strength
250 MPa 36 x 103 psi
Tensile Strength: Ultimate (UTS)
340 MPa 49 x 103 psi
Tensile Strength: Yield (Proof)
130 MPa 20 x 103 psi
Thermal Properties
Latent Heat of Fusion
190 J/g
Maximum Temperature: Mechanical
160 °C 320 °F
Melting Completion (Liquidus)
1000 °C 1840 °F
Melting Onset (Solidus)
970 °C 1770 °F
Specific Heat Capacity
380 J/kg-K 0.092 BTU/lb-°F
Thermal Conductivity
120 W/m-K 70 BTU/h-ft-°F
Thermal Expansion
19 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
28 % IACS
Electrical Conductivity: Equal Weight (Specific)
30 % IACS
Otherwise Unclassified Properties
Base Metal Price
28 % relative
Density
8.5 g/cm3 530 lb/ft3
Embodied Carbon
2.7 kg CO2/kg material
Embodied Energy
45 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)
83 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
13 points
Thermal Diffusivity
37 mm2/s
Thermal Shock Resistance
12 points
Alloy Composition
| Cu | 79 to 83 | |
| Zn | 15.4 to 20.4 | |
| Sn | 0.6 to 1.2 | |
| Pb | 0 to 0.090 | |
| Fe | 0 to 0.050 | |
| res. | 0 to 0.3 |
All values are % weight. Ranges represent what is permitted under applicable standards.