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Grade Ti-Pd18 Titanium vs. ACI-ASTM CK20 Steel

Grade Ti-Pd18 titanium belongs to the titanium alloys classification, while ACI-ASTM CK20 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 ACI-ASTM CK20 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 320
150
Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 17
37
Fatigue Strength, MPa 350
220
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 40
78
Tensile Strength: Ultimate (UTS), MPa 710
530
Tensile Strength: Yield (Proof), MPa 540
260

Thermal Properties

Latent Heat of Fusion, J/g 410
310
Maximum Temperature: Mechanical, °C 330
1100
Melting Completion (Liquidus), °C 1640
1400
Melting Onset (Solidus), °C 1590
1430
Specific Heat Capacity, J/kg-K 550
480
Thermal Conductivity, W/m-K 8.2
14
Thermal Expansion, µm/m-K 9.1
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.4
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
2.3

Otherwise Unclassified Properties

Density, g/cm3 4.5
7.8
Embodied Carbon, kg CO2/kg material 41
4.4
Embodied Energy, MJ/kg 670
62
Embodied Water, L/kg 270
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
160
Resilience: Unit (Modulus of Resilience), kJ/m3 1380
170
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 44
19
Strength to Weight: Bending, points 39
19
Thermal Diffusivity, mm2/s 3.3
3.7
Thermal Shock Resistance, points 52
13

Alloy Composition

Aluminum (Al), % 2.5 to 3.5
0
Carbon (C), % 0 to 0.1
0 to 0.2
Chromium (Cr), % 0
23 to 27
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.25
46.7 to 58
Manganese (Mn), % 0
0 to 2.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0 to 0.050
19 to 22
Oxygen (O), % 0 to 0.15
0
Palladium (Pd), % 0.040 to 0.080
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 2.0
Sulfur (S), % 0
0 to 0.040
Titanium (Ti), % 92.5 to 95.5
0
Vanadium (V), % 2.0 to 3.0
0
Residuals, % 0 to 0.4
0