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C69400 Brass vs. Grade 31 Titanium

C69400 brass belongs to the copper alloys classification, while grade 31 titanium belongs to the titanium alloys. There are 28 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is C69400 brass 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, % 17
20
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 42
41
Shear Strength, MPa 350
320
Tensile Strength: Ultimate (UTS), MPa 570
510
Tensile Strength: Yield (Proof), MPa 270
450

Thermal Properties

Latent Heat of Fusion, J/g 260
420
Maximum Temperature: Mechanical, °C 170
320
Melting Completion (Liquidus), °C 920
1660
Melting Onset (Solidus), °C 820
1610
Specific Heat Capacity, J/kg-K 410
540
Thermal Conductivity, W/m-K 26
21
Thermal Expansion, µm/m-K 18
8.7

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 6.2
3.4
Electrical Conductivity: Equal Weight (Specific), % IACS 6.7
6.9

Otherwise Unclassified Properties

Density, g/cm3 8.3
4.5
Embodied Carbon, kg CO2/kg material 2.7
36
Embodied Energy, MJ/kg 44
600
Embodied Water, L/kg 300
230

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 80
99
Resilience: Unit (Modulus of Resilience), kJ/m3 340
940
Stiffness to Weight: Axial, points 7.4
13
Stiffness to Weight: Bending, points 19
35
Strength to Weight: Axial, points 19
32
Strength to Weight: Bending, points 18
32
Thermal Diffusivity, mm2/s 7.7
8.5
Thermal Shock Resistance, points 20
39

Alloy Composition

Carbon (C), % 0
0 to 0.080
Cobalt (Co), % 0
0.2 to 0.8
Copper (Cu), % 80 to 83
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 0 to 0.2
0 to 0.3
Lead (Pb), % 0 to 0.3
0
Nitrogen (N), % 0
0 to 0.050
Oxygen (O), % 0
0 to 0.35
Palladium (Pd), % 0
0.040 to 0.080
Silicon (Si), % 3.5 to 4.5
0
Titanium (Ti), % 0
97.9 to 99.76
Zinc (Zn), % 11.5 to 16.5
0
Residuals, % 0
0 to 0.4