Spring-Tempered (H08) C66900 Brass
H08 C66900 brass is C66900 brass in the H08 (spring) temper. It has the second highest strength compared to the other variants of C66900 brass. The graph bars on the material properties cards below compare H08 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
3.0 %
Poisson's Ratio
0.32
Rockwell B Hardness
92
Rockwell Superficial 30T Hardness
79
Shear Modulus
45 GPa 6.5 x 106 psi
Shear Strength
400 MPa 57 x 103 psi
Tensile Strength: Ultimate (UTS)
690 MPa 100 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)
4.6 to 200 MJ/m3
Resilience: Unit (Modulus of Resilience)
460 to 2450 kJ/m3
Stiffness to Weight: Axial
8.1 points
Stiffness to Weight: Bending
20 points
Strength to Weight: Axial
23 points
Strength to Weight: Bending
21 points
Thermal Shock Resistance
21 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.