Light Annealed (O50) C37100 Brass
O50 C37100 brass is C37100 brass in the O50 (light annealed) temper. The graph bars on the material properties cards below compare O50 C37100 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
100 GPa 15 x 106 psi
Elongation at Break
40 %
Poisson's Ratio
0.31
Rockwell F Hardness
80
Rockwell Superficial 30T Hardness
43
Shear Modulus
40 GPa 5.8 x 106 psi
Shear Strength
260 MPa 37 x 103 psi
Tensile Strength: Ultimate (UTS)
370 MPa 54 x 103 psi
Tensile Strength: Yield (Proof)
150 MPa 22 x 103 psi
Thermal Properties
Latent Heat of Fusion
170 J/g
Maximum Temperature: Mechanical
120 °C 240 °F
Melting Completion (Liquidus)
900 °C 1650 °F
Melting Onset (Solidus)
890 °C 1630 °F
Specific Heat Capacity
380 J/kg-K 0.092 BTU/lb-°F
Thermal Conductivity
120 W/m-K 69 BTU/h-ft-°F
Thermal Expansion
21 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
27 % IACS
Electrical Conductivity: Equal Weight (Specific)
30 % IACS
Otherwise Unclassified Properties
Base Metal Price
23 % relative
Density
8.0 g/cm3 500 lb/ft3
Embodied Carbon
2.7 kg CO2/kg material
Embodied Energy
45 MJ/kg 20 x 103 BTU/lb
Embodied Water
320 L/kg 38 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
120 MJ/m3
Resilience: Unit (Modulus of Resilience)
110 kJ/m3
Stiffness to Weight: Axial
7.2 points
Stiffness to Weight: Bending
20 points
Strength to Weight: Axial
13 points
Strength to Weight: Bending
14 points
Thermal Diffusivity
39 mm2/s
Thermal Shock Resistance
12 points
Alloy Composition
| Cu | 58 to 62 | |
| Zn | 36.3 to 41.4 | |
| Pb | 0.6 to 1.2 | |
| Fe | 0 to 0.15 | |
| res. | 0 to 0.4 |
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