Full-Hard and Stress Relieved (HR04) C66300 Brass
HR04 C66300 brass is C66300 brass in the HR04 (full-hard and stress relieved) temper. The graph bars on the material properties cards below compare HR04 C66300 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
10 %
Poisson's Ratio
0.33
Shear Modulus
42 GPa 6.1 x 106 psi
Shear Strength
350 MPa 50 x 103 psi
Tensile Strength: Ultimate (UTS)
580 MPa 84 x 103 psi
Tensile Strength: Yield (Proof)
550 MPa 80 x 103 psi
Thermal Properties
Latent Heat of Fusion
200 J/g
Maximum Temperature: Mechanical
180 °C 350 °F
Melting Completion (Liquidus)
1050 °C 1920 °F
Melting Onset (Solidus)
1000 °C 1830 °F
Specific Heat Capacity
380 J/kg-K 0.092 BTU/lb-°F
Thermal Conductivity
110 W/m-K 62 BTU/h-ft-°F
Thermal Expansion
18 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
25 % IACS
Electrical Conductivity: Equal Weight (Specific)
26 % IACS
Otherwise Unclassified Properties
Base Metal Price
29 % relative
Density
8.6 g/cm3 540 lb/ft3
Embodied Carbon
2.8 kg CO2/kg material
Embodied Energy
46 MJ/kg 20 x 103 BTU/lb
Embodied Water
320 L/kg 39 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
58 MJ/m3
Resilience: Unit (Modulus of Resilience)
1350 kJ/m3
Stiffness to Weight: Axial
7.2 points
Stiffness to Weight: Bending
19 points
Strength to Weight: Axial
19 points
Strength to Weight: Bending
18 points
Thermal Diffusivity
32 mm2/s
Thermal Shock Resistance
20 points
Alloy Composition
| Cu | 84.5 to 87.5 | |
| Zn | 6.0 to 12.8 | |
| Sn | 1.5 to 3.0 | |
| Fe | 1.4 to 2.4 | |
| P | 0 to 0.35 | |
| Co | 0 to 0.2 | |
| Pb | 0 to 0.050 | |
| res. | 0 to 0.5 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Further Reading
CRC Materials Science and Engineering Handbook, 4th ed., James F. Shackelford et al. (editors), 2015