Full-Hard (H04) C27200 Brass
H04 C27200 brass is C27200 brass in the H04 (full hard) temper. It has the second highest strength and second lowest ductility compared to the other variants of C27200 brass. The graph bars on the material properties cards below compare H04 C27200 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 15 x 106 psi
Elongation at Break
15 %
Poisson's Ratio
0.31
Rockwell B Hardness
80
Shear Modulus
40 GPa 5.8 x 106 psi
Shear Strength
320 MPa 46 x 103 psi
Tensile Strength: Ultimate (UTS)
520 MPa 75 x 103 psi
Tensile Strength: Yield (Proof)
340 MPa 49 x 103 psi
Thermal Properties
Latent Heat of Fusion
170 J/g
Maximum Temperature: Mechanical
130 °C 260 °F
Melting Completion (Liquidus)
920 °C 1680 °F
Melting Onset (Solidus)
870 °C 1600 °F
Specific Heat Capacity
390 J/kg-K 0.092 BTU/lb-°F
Thermal Conductivity
120 W/m-K 67 BTU/h-ft-°F
Thermal Expansion
20 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
28 % IACS
Electrical Conductivity: Equal Weight (Specific)
31 % IACS
Otherwise Unclassified Properties
Base Metal Price
24 % relative
Density
8.1 g/cm3 500 lb/ft3
Embodied Carbon
2.7 kg CO2/kg material
Embodied Energy
45 MJ/kg 19 x 103 BTU/lb
Embodied Water
320 L/kg 38 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
68 MJ/m3
Resilience: Unit (Modulus of Resilience)
530 kJ/m3
Stiffness to Weight: Axial
7.2 points
Stiffness to Weight: Bending
19 points
Strength to Weight: Axial
18 points
Strength to Weight: Bending
18 points
Thermal Diffusivity
37 mm2/s
Thermal Shock Resistance
17 points
Alloy Composition
| Cu | 62 to 65 | |
| Zn | 34.6 to 38 | |
| Fe | 0 to 0.070 | |
| Pb | 0 to 0.070 | |
| res. | 0 to 0.3 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Further Reading
ASTM B36: Standard Specification for Brass Plate, Sheet, Strip, And Rolled Bar