UNS C27200 Yellow Brass
C27200 brass is a brass formulated for primary forming into wrought products.
The properties of C27200 brass include six 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 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
10 to 50 %
Poisson's Ratio
0.31
Rockwell B Hardness
53 to 86
Shear Modulus
40 GPa 5.8 x 106 psi
Shear Strength
230 to 320 MPa 33 to 46 x 103 psi
Tensile Strength: Ultimate (UTS)
370 to 590 MPa 54 to 86 x 103 psi
Tensile Strength: Yield (Proof)
150 to 410 MPa 22 to 60 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)
30 to 270 MJ/m3
Resilience: Unit (Modulus of Resilience)
110 to 810 kJ/m3
Stiffness to Weight: Axial
7.2 points
Stiffness to Weight: Bending
19 points
Strength to Weight: Axial
13 to 20 points
Strength to Weight: Bending
14 to 19 points
Thermal Diffusivity
37 mm2/s
Thermal Shock Resistance
12 to 20 points
Alloy Composition
Among wrought copper alloys, the composition of C27200 brass is notable for containing comparatively high amounts of iron (Fe) and lead (Pb). Iron is used to increase strength inexpensively. Lead is used to improve machinability and bearing properties, at the cost of toxicity.
| 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
Similar Alloys
Further Reading
ASTM B36: Standard Specification for Brass Plate, Sheet, Strip, And Rolled Bar