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C69700 Brass vs. C68800 Brass

Both C69700 brass and C68800 brass are copper alloys. They have a moderately high 91% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is C69700 brass and the bottom bar is C68800 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 25
2.0 to 36
Poisson's Ratio 0.32
0.32
Shear Modulus, GPa 41
41
Shear Strength, MPa 300
380 to 510
Tensile Strength: Ultimate (UTS), MPa 470
570 to 890
Tensile Strength: Yield (Proof), MPa 230
390 to 790

Thermal Properties

Latent Heat of Fusion, J/g 240
190
Maximum Temperature: Mechanical, °C 160
160
Melting Completion (Liquidus), °C 930
960
Melting Onset (Solidus), °C 880
950
Specific Heat Capacity, J/kg-K 400
400
Thermal Conductivity, W/m-K 43
40
Thermal Expansion, µm/m-K 19
19

Otherwise Unclassified Properties

Base Metal Price, % relative 26
26
Density, g/cm3 8.3
8.2
Embodied Carbon, kg CO2/kg material 2.7
2.8
Embodied Energy, MJ/kg 44
48
Embodied Water, L/kg 310
350

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 99
16 to 180
Resilience: Unit (Modulus of Resilience), kJ/m3 250
710 to 2860
Stiffness to Weight: Axial, points 7.3
7.3
Stiffness to Weight: Bending, points 19
19
Strength to Weight: Axial, points 16
19 to 30
Strength to Weight: Bending, points 16
19 to 25
Thermal Diffusivity, mm2/s 13
12
Thermal Shock Resistance, points 16
19 to 30

Alloy Composition

Aluminum (Al), % 0
3.0 to 3.8
Cobalt (Co), % 0
0.25 to 0.55
Copper (Cu), % 75 to 80
70.8 to 75.5
Iron (Fe), % 0 to 0.2
0 to 0.2
Lead (Pb), % 0.5 to 1.5
0 to 0.050
Manganese (Mn), % 0 to 0.4
0
Silicon (Si), % 2.5 to 3.5
0
Zinc (Zn), % 13.9 to 22
21.3 to 24.1
Residuals, % 0
0 to 0.5