Heat Treated (HT) C99750 Brass
HT C99750 brass is C99750 brass in the heat treated (HT) condition. The graph bars on the material properties cards below compare HT C99750 brass to: cast 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
Brinell Hardness
120
Elastic (Young's, Tensile) Modulus
130 GPa 18 x 106 psi
Elongation at Break
20 %
Poisson's Ratio
0.32
Rockwell B Hardness
82
Shear Modulus
48 GPa 6.9 x 106 psi
Tensile Strength: Ultimate (UTS)
520 MPa 75 x 103 psi
Tensile Strength: Yield (Proof)
280 MPa 40 x 103 psi
Thermal Properties
Latent Heat of Fusion
200 J/g
Maximum Temperature: Mechanical
160 °C 330 °F
Melting Completion (Liquidus)
840 °C 1550 °F
Melting Onset (Solidus)
820 °C 1500 °F
Specific Heat Capacity
410 J/kg-K 0.1 BTU/lb-°F
Thermal Expansion
20 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
2.0 % IACS
Electrical Conductivity: Equal Weight (Specific)
2.2 % IACS
Otherwise Unclassified Properties
Base Metal Price
23 % relative
Density
8.1 g/cm3 500 lb/ft3
Embodied Carbon
3.1 kg CO2/kg material
Embodied Energy
51 MJ/kg 22 x 103 BTU/lb
Embodied Water
310 L/kg 38 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
87 MJ/m3
Resilience: Unit (Modulus of Resilience)
300 kJ/m3
Stiffness to Weight: Axial
8.6 points
Stiffness to Weight: Bending
21 points
Strength to Weight: Axial
18 points
Strength to Weight: Bending
18 points
Thermal Shock Resistance
15 points
Alloy Composition
| Cu | 55 to 61 | |
| Mn | 17 to 23 | |
| Zn | 17 to 23 | |
| Ni | 0 to 5.0 | |
| Al | 0.25 to 3.0 | |
| Pb | 0.5 to 2.5 | |
| Fe | 0 to 1.0 | |
| res. | 0 to 0.3 |
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
CRC Materials Science and Engineering Handbook, 4th ed., James F. Shackelford et al. (editors), 2015