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Grade Ti-Pd18 Titanium vs. AISI 409Cb Stainless Steel

Grade Ti-Pd18 titanium belongs to the titanium alloys classification, while AISI 409Cb stainless steel belongs to the iron alloys. There are 28 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is grade Ti-Pd18 titanium and the bottom bar is AISI 409Cb stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 17
24
Fatigue Strength, MPa 350
140
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 40
75
Tensile Strength: Ultimate (UTS), MPa 710
420
Tensile Strength: Yield (Proof), MPa 540
200

Thermal Properties

Latent Heat of Fusion, J/g 410
270
Maximum Temperature: Mechanical, °C 330
710
Melting Completion (Liquidus), °C 1640
1450
Melting Onset (Solidus), °C 1590
1410
Specific Heat Capacity, J/kg-K 550
480
Thermal Conductivity, W/m-K 8.2
25
Thermal Expansion, µm/m-K 9.1
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.4
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
3.3

Otherwise Unclassified Properties

Density, g/cm3 4.5
7.8
Embodied Carbon, kg CO2/kg material 41
2.2
Embodied Energy, MJ/kg 670
31
Embodied Water, L/kg 270
94

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
83
Resilience: Unit (Modulus of Resilience), kJ/m3 1380
100
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 44
15
Strength to Weight: Bending, points 39
16
Thermal Diffusivity, mm2/s 3.3
6.7
Thermal Shock Resistance, points 52
15

Alloy Composition

Aluminum (Al), % 2.5 to 3.5
0
Carbon (C), % 0 to 0.1
0 to 0.060
Chromium (Cr), % 0
10.5 to 11.7
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.25
84.9 to 89.5
Manganese (Mn), % 0
0 to 1.0
Nickel (Ni), % 0 to 0.050
0 to 0.5
Niobium (Nb), % 0
0 to 0.75
Oxygen (O), % 0 to 0.15
0
Palladium (Pd), % 0.040 to 0.080
0
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0
0 to 1.0
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