Annealed (O61) C49300 Brass
O61 C49300 brass is C49300 brass in the O61 (annealed) temper. The graph bars on the material properties cards below compare O61 C49300 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
100 GPa 15 x 106 psi
Elongation at Break
18 %
Poisson's Ratio
0.31
Shear Modulus
40 GPa 5.7 x 106 psi
Shear Strength
270 MPa 40 x 103 psi
Tensile Strength: Ultimate (UTS)
440 MPa 64 x 103 psi
Tensile Strength: Yield (Proof)
280 MPa 41 x 103 psi
Thermal Properties
Latent Heat of Fusion
170 J/g
Maximum Temperature: Mechanical
120 °C 260 °F
Melting Completion (Liquidus)
880 °C 1620 °F
Melting Onset (Solidus)
840 °C 1540 °F
Specific Heat Capacity
380 J/kg-K 0.091 BTU/lb-°F
Thermal Conductivity
88 W/m-K 51 BTU/h-ft-°F
Thermal Expansion
20 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
15 % IACS
Electrical Conductivity: Equal Weight (Specific)
17 % IACS
Otherwise Unclassified Properties
Base Metal Price
26 % relative
Density
8.0 g/cm3 500 lb/ft3
Embodied Carbon
3.0 kg CO2/kg material
Embodied Energy
50 MJ/kg 22 x 103 BTU/lb
Embodied Water
370 L/kg 45 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
70 MJ/m3
Resilience: Unit (Modulus of Resilience)
390 kJ/m3
Stiffness to Weight: Axial
7.2 points
Stiffness to Weight: Bending
19 points
Strength to Weight: Axial
15 points
Strength to Weight: Bending
16 points
Thermal Diffusivity
29 mm2/s
Thermal Shock Resistance
15 points
Alloy Composition
| Cu | 58 to 62 | |
| Zn | 30.6 to 40.5 | |
| Sn | 1.0 to 1.8 | |
| Bi | 0.5 to 2.0 | |
| Ni | 0 to 1.5 | |
| Al | 0 to 0.5 | |
| Sb | 0 to 0.5 | |
| P | 0 to 0.2 | |
| Se | 0 to 0.2 | |
| Si | 0 to 0.1 | |
| Fe | 0 to 0.1 | |
| Mn | 0 to 0.030 | |
| Pb | 0 to 0.010 | |
| res. | 0 to 0.5 |
All values are % weight. Ranges represent what is permitted under applicable standards.