Menu (ESC)

UNS C43000 Tin Brass

C43000 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 C43000 brass include eight 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 C43000 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

3.0 to 55 %

Poisson's Ratio


Rockwell B Hardness

30 to 100

Rockwell Superficial 30T Hardness

57 to 86

Shear Modulus

42 GPa 6.0 x 106 psi

Shear Strength

230 to 410 MPa 34 to 59 x 103 psi

Tensile Strength: Ultimate (UTS)

320 to 710 MPa 46 to 100 x 103 psi

Tensile Strength: Yield (Proof)

130 to 550 MPa 20 to 79 x 103 psi

Thermal Properties

Latent Heat of Fusion

190 J/g

Maximum Temperature: Mechanical

170 °C 340 °F

Melting Completion (Liquidus)

1030 °C 1880 °F

Melting Onset (Solidus)

1000 °C 1830 °F

Specific Heat Capacity

380 J/kg-K 0.091 BTU/lb-°F

Thermal Conductivity

120 W/m-K 69 BTU/h-ft-°F

Thermal Expansion

18 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

27 % IACS

Electrical Conductivity: Equal Weight (Specific)

28 % IACS

Otherwise Unclassified Properties

Base Metal Price

29 % relative


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

330 L/kg 39 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

20 to 150 MJ/m3

Resilience: Unit (Modulus of Resilience)

82 to 1350 kJ/m3

Stiffness to Weight: Axial

7.1 points

Stiffness to Weight: Bending

19 points

Strength to Weight: Axial

10 to 23 points

Strength to Weight: Bending

12 to 20 points

Thermal Diffusivity

36 mm2/s

Thermal Shock Resistance

11 to 25 points

Alloy Composition

Among wrought copper alloys, the composition of C43000 brass is notable for including tin (Sn). Tin is used to improve strength, bearing properties, and corrosion resistance against certain types of media.

Copper (Cu)Cu 84 to 87
Zinc (Zn)Zn 9.7 to 14.3
Tin (Sn)Sn 1.7 to 2.7
Lead (Pb)Pb 0 to 0.1
Iron (Fe)Fe 0 to 0.050
Residualsres. 0 to 0.5

All values are % weight. Ranges represent what is permitted under applicable standards.

Followup Questions

Similar Alloys