MakeItFrom.com
Menu (ESC)

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.

Copper (Cu) 62 to 65
Zinc (Zn) 34.6 to 38
Iron (Fe) 0 to 0.070
Lead (Pb) 0 to 0.070
Residuals 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