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Grade Ti-Pd18 Titanium vs. SAE-AISI 1018 Steel

Grade Ti-Pd18 titanium belongs to the titanium alloys classification, while SAE-AISI 1018 steel belongs to the iron alloys. There are 29 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 grade Ti-Pd18 titanium and the bottom bar is SAE-AISI 1018 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 320
130 to 140
Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 17
17 to 27
Fatigue Strength, MPa 350
180 to 270
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 40
73
Tensile Strength: Ultimate (UTS), MPa 710
430 to 480
Tensile Strength: Yield (Proof), MPa 540
240 to 400

Thermal Properties

Latent Heat of Fusion, J/g 410
250
Maximum Temperature: Mechanical, °C 330
400
Melting Completion (Liquidus), °C 1640
1460
Melting Onset (Solidus), °C 1590
1420
Specific Heat Capacity, J/kg-K 550
470
Thermal Conductivity, W/m-K 8.2
52
Thermal Expansion, µm/m-K 9.1
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.4
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
8.0

Otherwise Unclassified Properties

Density, g/cm3 4.5
7.9
Embodied Carbon, kg CO2/kg material 41
1.4
Embodied Energy, MJ/kg 670
18
Embodied Water, L/kg 270
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
75 to 100
Resilience: Unit (Modulus of Resilience), kJ/m3 1380
150 to 430
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
24
Strength to Weight: Axial, points 44
15 to 17
Strength to Weight: Bending, points 39
16 to 17
Thermal Diffusivity, mm2/s 3.3
14
Thermal Shock Resistance, points 52
14 to 15

Alloy Composition

Aluminum (Al), % 2.5 to 3.5
0
Carbon (C), % 0 to 0.1
0.15 to 0.2
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.25
98.8 to 99.25
Manganese (Mn), % 0
0.6 to 0.9
Nickel (Ni), % 0 to 0.050
0
Oxygen (O), % 0 to 0.15
0
Palladium (Pd), % 0.040 to 0.080
0
Phosphorus (P), % 0
0 to 0.040
Sulfur (S), % 0
0 to 0.050
Titanium (Ti), % 92.5 to 95.5
0
Vanadium (V), % 2.0 to 3.0
0
Residuals, % 0 to 0.4
0