Heat Treated (HT) C99400 Brass
HT C99400 brass is C99400 brass in the heat treated (HT) condition. The graph bars on the material properties cards below compare HT C99400 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
Elastic (Young's, Tensile) Modulus
120 GPa 17 x 106 psi
Poisson's Ratio
0.34
Shear Modulus
44 GPa 6.4 x 106 psi
Tensile Strength: Ultimate (UTS)
550 MPa 79 x 103 psi
Tensile Strength: Yield (Proof)
370 MPa 54 x 103 psi
Thermal Properties
Latent Heat of Fusion
230 J/g
Maximum Temperature: Mechanical
200 °C 400 °F
Melting Completion (Liquidus)
1070 °C 1960 °F
Melting Onset (Solidus)
1020 °C 1860 °F
Specific Heat Capacity
400 J/kg-K 0.1 BTU/lb-°F
Thermal Expansion
17 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
17 % IACS
Electrical Conductivity: Equal Weight (Specific)
17 % IACS
Otherwise Unclassified Properties
Base Metal Price
30 % relative
Density
8.7 g/cm3 540 lb/ft3
Embodied Carbon
2.8 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: Unit (Modulus of Resilience)
590 kJ/m3
Stiffness to Weight: Axial
7.5 points
Stiffness to Weight: Bending
19 points
Strength to Weight: Axial
17 points
Strength to Weight: Bending
17 points
Thermal Shock Resistance
19 points
Alloy Composition
| Cu | 83.5 to 96.5 | |
| Zn | 0.5 to 5.0 | |
| Ni | 1.0 to 3.5 | |
| Fe | 1.0 to 3.0 | |
| Si | 0.5 to 2.0 | |
| Al | 0.5 to 2.0 | |
| Mn | 0 to 0.5 | |
| Pb | 0 to 0.25 | |
| 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