Half-Hard (H02) C69300 Brass
H02 C69300 brass is C69300 brass in the H02 (half hard) temper. The graph bars on the material properties cards below compare H02 C69300 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
8.5 %
Fatigue Strength
160 MPa 23 x 103 psi
Poisson's Ratio
0.32
Rockwell B Hardness
88
Shear Modulus
41 GPa 6.0 x 106 psi
Shear Strength
370 MPa 54 x 103 psi
Tensile Strength: Ultimate (UTS)
630 MPa 92 x 103 psi
Tensile Strength: Yield (Proof)
390 MPa 57 x 103 psi
Thermal Properties
Latent Heat of Fusion
240 J/g
Maximum Temperature: Mechanical
160 °C 310 °F
Melting Completion (Liquidus)
880 °C 1620 °F
Melting Onset (Solidus)
860 °C 1570 °F
Specific Heat Capacity
400 J/kg-K 0.1 BTU/lb-°F
Thermal Conductivity
38 W/m-K 22 BTU/h-ft-°F
Thermal Expansion
19 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
8.0 % IACS
Electrical Conductivity: Equal Weight (Specific)
8.8 % IACS
Otherwise Unclassified Properties
Base Metal Price
26 % relative
Density
8.2 g/cm3 510 lb/ft3
Embodied Carbon
2.7 kg CO2/kg material
Embodied Energy
45 MJ/kg 19 x 103 BTU/lb
Embodied Water
310 L/kg 37 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
47 MJ/m3
Resilience: Unit (Modulus of Resilience)
700 kJ/m3
Stiffness to Weight: Axial
7.4 points
Stiffness to Weight: Bending
19 points
Strength to Weight: Axial
21 points
Strength to Weight: Bending
20 points
Thermal Diffusivity
12 mm2/s
Thermal Shock Resistance
22 points
Alloy Composition
| Cu | 73 to 77 | |
| Zn | 18.4 to 24.3 | |
| Si | 2.7 to 3.4 | |
| Sn | 0 to 0.2 | |
| P | 0.040 to 0.15 | |
| Mn | 0 to 0.1 | |
| Ni | 0 to 0.1 | |
| Fe | 0 to 0.1 | |
| Pb | 0 to 0.090 | |
| res. | 0 to 0.5 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Further Reading
Properties and Selection: Nonferrous Alloys and Special-Purpose Materials, ASM Handbook vol. 2, ASM International, 1993