Full-Hard (H04) C66900 Brass
H04 C66900 brass is C66900 brass in the H04 (full hard) temper. The graph bars on the material properties cards below compare H04 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
5.0 %
Poisson's Ratio
0.32
Rockwell B Hardness
88
Rockwell Superficial 30T Hardness
77
Shear Modulus
45 GPa 6.5 x 106 psi
Shear Strength
360 MPa 52 x 103 psi
Tensile Strength: Ultimate (UTS)
610 MPa 89 x 103 psi
Tensile Strength: Yield (Proof)
590 MPa 86 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)
30 MJ/m3
Resilience: Unit (Modulus of Resilience)
1480 kJ/m3
Stiffness to Weight: Axial
8.1 points
Stiffness to Weight: Bending
20 points
Strength to Weight: Axial
21 points
Strength to Weight: Bending
20 points
Thermal Shock Resistance
18 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.