Half-Hard (H02) C66900 Brass
H02 C66900 brass is C66900 brass in the H02 (half hard) temper. It has the second lowest strength and second highest ductility compared to the other variants of C66900 brass. The graph bars on the material properties cards below compare H02 C66900 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
120 GPa 17 x 106 psi
Elongation at Break
16 %
Poisson's Ratio
0.32
Rockwell B Hardness
79
Rockwell Superficial 30T Hardness
71
Shear Modulus
45 GPa 6.5 x 106 psi
Shear Strength
310 MPa 45 x 103 psi
Tensile Strength: Ultimate (UTS)
500 MPa 73 x 103 psi
Tensile Strength: Yield (Proof)
410 MPa 60 x 103 psi
Thermal Properties
Latent Heat of Fusion
190 J/g
Maximum Temperature: Mechanical
150 °C 300 °F
Melting Completion (Liquidus)
860 °C 1580 °F
Melting Onset (Solidus)
850 °C 1550 °F
Specific Heat Capacity
400 J/kg-K 0.095 BTU/lb-°F
Thermal Expansion
20 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
3.4 % IACS
Electrical Conductivity: Equal Weight (Specific)
3.8 % IACS
Otherwise Unclassified Properties
Base Metal Price
23 % relative
Density
8.2 g/cm3 510 lb/ft3
Embodied Carbon
2.8 kg CO2/kg material
Embodied Energy
46 MJ/kg 20 x 103 BTU/lb
Embodied Water
310 L/kg 37 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
76 MJ/m3
Resilience: Unit (Modulus of Resilience)
720 kJ/m3
Stiffness to Weight: Axial
8.1 points
Stiffness to Weight: Bending
20 points
Strength to Weight: Axial
17 points
Strength to Weight: Bending
17 points
Thermal Shock Resistance
15 points
Alloy Composition
| Cu | 62.5 to 64.5 | |
| Zn | 22.5 to 26 | |
| Mn | 11.5 to 12.5 | |
| Fe | 0 to 0.25 | |
| Pb | 0 to 0.050 | |
| res. | 0 to 0.2 |
All values are % weight. Ranges represent what is permitted under applicable standards.