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C34500 Brass vs. C69400 Brass

Both C34500 brass and C69400 brass are copper alloys. They have 78% of their average alloy composition in common.

For each property being compared, the top bar is C34500 brass and the bottom bar is C69400 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
110
Elongation at Break, % 12 to 28
17
Poisson's Ratio 0.31
0.33
Shear Modulus, GPa 40
42
Shear Strength, MPa 220 to 260
350
Tensile Strength: Ultimate (UTS), MPa 340 to 430
570
Tensile Strength: Yield (Proof), MPa 120 to 180
270

Thermal Properties

Latent Heat of Fusion, J/g 170
260
Maximum Temperature: Mechanical, °C 120
170
Melting Completion (Liquidus), °C 910
920
Melting Onset (Solidus), °C 890
820
Specific Heat Capacity, J/kg-K 380
410
Thermal Conductivity, W/m-K 120
26
Thermal Expansion, µm/m-K 21
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 26
6.2
Electrical Conductivity: Equal Weight (Specific), % IACS 29
6.7

Otherwise Unclassified Properties

Base Metal Price, % relative 24
27
Density, g/cm3 8.2
8.3
Embodied Carbon, kg CO2/kg material 2.6
2.7
Embodied Energy, MJ/kg 45
44
Embodied Water, L/kg 320
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 42 to 75
80
Resilience: Unit (Modulus of Resilience), kJ/m3 69 to 160
340
Stiffness to Weight: Axial, points 7.1
7.4
Stiffness to Weight: Bending, points 19
19
Strength to Weight: Axial, points 12 to 15
19
Strength to Weight: Bending, points 13 to 16
18
Thermal Diffusivity, mm2/s 37
7.7
Thermal Shock Resistance, points 11 to 14
20

Alloy Composition

Copper (Cu), % 62 to 65
80 to 83
Iron (Fe), % 0 to 0.15
0 to 0.2
Lead (Pb), % 1.5 to 2.5
0 to 0.3
Silicon (Si), % 0
3.5 to 4.5
Zinc (Zn), % 32 to 36.5
11.5 to 16.5
Residuals, % 0
0 to 0.5