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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

Copper (Cu)Cu 58 to 62
Zinc (Zn)Zn 36.3 to 41.4
Lead (Pb)Pb 0.6 to 1.2
Iron (Fe)Fe 0 to 0.15
Residualsres. 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