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Grade 18 Titanium vs. ZA-27

Grade 18 titanium belongs to the titanium alloys classification, while ZA-27 belongs to the zinc alloys. There are 29 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is grade 18 titanium and the bottom bar is ZA-27.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
78
Elongation at Break, % 11 to 17
2.0 to 4.5
Fatigue Strength, MPa 330 to 480
110 to 170
Poisson's Ratio 0.32
0.27
Shear Modulus, GPa 40
31
Shear Strength, MPa 420 to 590
230 to 330
Tensile Strength: Ultimate (UTS), MPa 690 to 980
400 to 430
Tensile Strength: Yield (Proof), MPa 540 to 810
260 to 370

Thermal Properties

Latent Heat of Fusion, J/g 410
130
Maximum Temperature: Mechanical, °C 330
120
Melting Completion (Liquidus), °C 1640
480
Melting Onset (Solidus), °C 1590
380
Specific Heat Capacity, J/kg-K 550
530
Thermal Conductivity, W/m-K 8.3
130
Thermal Expansion, µm/m-K 9.9
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.3
30
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
53

Otherwise Unclassified Properties

Density, g/cm3 4.5
5.0
Embodied Carbon, kg CO2/kg material 41
4.2
Embodied Energy, MJ/kg 670
80
Embodied Water, L/kg 270
570

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 87 to 110
8.1 to 18
Resilience: Unit (Modulus of Resilience), kJ/m3 1380 to 3110
420 to 890
Stiffness to Weight: Axial, points 13
8.6
Stiffness to Weight: Bending, points 35
28
Strength to Weight: Axial, points 43 to 61
22 to 24
Strength to Weight: Bending, points 39 to 49
24 to 25
Thermal Diffusivity, mm2/s 3.4
47
Thermal Shock Resistance, points 47 to 67
14 to 15

Alloy Composition


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Aluminum (Al), % 2.5 to 3.5
25 to 28
Cadmium (Cd), % 0
0 to 0.0060
Carbon (C), % 0 to 0.080
0
Copper (Cu), % 0
2.0 to 2.5
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.25
0 to 0.1
Lead (Pb), % 0
0 to 0.0060
Magnesium (Mg), % 0
0.010 to 0.020
Nickel (Ni), % 0
0 to 0.020
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.15
0
Palladium (Pd), % 0.040 to 0.080
0
Silicon (Si), % 0
0 to 0.080
Tin (Sn), % 0
0 to 0.0030
Titanium (Ti), % 92.5 to 95.5
0
Vanadium (V), % 2.0 to 3.0
0
Zinc (Zn), % 0
69.3 to 73
Residuals, % 0 to 0.4
0