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C87700 Bronze vs. Grade 31 Titanium

C87700 bronze belongs to the copper alloys classification, while grade 31 titanium belongs to the titanium alloys. 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 C87700 bronze and the bottom bar is grade 31 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 3.6
20
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 42
41
Tensile Strength: Ultimate (UTS), MPa 300
510
Tensile Strength: Yield (Proof), MPa 120
450

Thermal Properties

Latent Heat of Fusion, J/g 250
420
Maximum Temperature: Mechanical, °C 180
320
Melting Completion (Liquidus), °C 980
1660
Melting Onset (Solidus), °C 900
1610
Specific Heat Capacity, J/kg-K 400
540
Thermal Conductivity, W/m-K 120
21
Thermal Expansion, µm/m-K 18
8.7

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 45
3.4
Electrical Conductivity: Equal Weight (Specific), % IACS 48
6.9

Otherwise Unclassified Properties

Density, g/cm3 8.5
4.5
Embodied Carbon, kg CO2/kg material 2.7
36
Embodied Energy, MJ/kg 45
600
Embodied Water, L/kg 310
230

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 8.6
99
Resilience: Unit (Modulus of Resilience), kJ/m3 64
940
Stiffness to Weight: Axial, points 7.4
13
Stiffness to Weight: Bending, points 19
35
Strength to Weight: Axial, points 9.8
32
Strength to Weight: Bending, points 12
32
Thermal Diffusivity, mm2/s 34
8.5
Thermal Shock Resistance, points 11
39

Alloy Composition

Antimony (Sb), % 0 to 0.1
0
Carbon (C), % 0
0 to 0.080
Cobalt (Co), % 0
0.2 to 0.8
Copper (Cu), % 87.5 to 90.5
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 0 to 0.5
0 to 0.3
Lead (Pb), % 0 to 0.090
0
Manganese (Mn), % 0 to 0.8
0
Nickel (Ni), % 0 to 0.25
0
Nitrogen (N), % 0
0 to 0.050
Oxygen (O), % 0
0 to 0.35
Palladium (Pd), % 0
0.040 to 0.080
Phosphorus (P), % 0 to 0.15
0
Silicon (Si), % 2.5 to 3.5
0
Tin (Sn), % 0 to 2.0
0
Titanium (Ti), % 0
97.9 to 99.76
Zinc (Zn), % 7.0 to 9.0
0
Residuals, % 0
0 to 0.4