UNS C66300 Tin Brass
C66300 brass is a brass formulated for primary forming into wrought products. It has a moderately high base cost and a moderately high melting temperature among wrought brasses.
The properties of C66300 brass include nine common variations. This page shows summary ranges across all of them. For more specific values, follow the links immediately below. The graph bars on the material properties cards further below compare 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
2.3 to 22 %
Poisson's Ratio
0.33
Shear Modulus
42 GPa 6.1 x 106 psi
Shear Strength
290 to 470 MPa 42 to 68 x 103 psi
Tensile Strength: Ultimate (UTS)
460 to 810 MPa 66 to 120 x 103 psi
Tensile Strength: Yield (Proof)
400 to 800 MPa 58 to 120 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)
17 to 98 MJ/m3
Resilience: Unit (Modulus of Resilience)
710 to 2850 kJ/m3
Stiffness to Weight: Axial
7.2 points
Stiffness to Weight: Bending
19 points
Strength to Weight: Axial
15 to 26 points
Strength to Weight: Bending
15 to 22 points
Thermal Diffusivity
32 mm2/s
Thermal Shock Resistance
16 to 28 points
Alloy Composition
Among wrought copper alloys, the composition of C66300 brass is notable for including cobalt (Co). Cobalt is used to improve strength.
| 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
Similar Alloys
Further Reading
CRC Materials Science and Engineering Handbook, 4th ed., James F. Shackelford et al. (editors), 2015