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Grade Ti-Pd18 Titanium vs. S30441 Stainless Steel

Grade Ti-Pd18 titanium belongs to the titanium alloys classification, while S30441 stainless steel belongs to the iron alloys. There are 29 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 S30441 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 320
170
Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 17
45
Fatigue Strength, MPa 350
210
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 40
76
Tensile Strength: Ultimate (UTS), MPa 710
580
Tensile Strength: Yield (Proof), MPa 540
230

Thermal Properties

Latent Heat of Fusion, J/g 410
300
Maximum Temperature: Mechanical, °C 330
940
Melting Completion (Liquidus), °C 1640
1420
Melting Onset (Solidus), °C 1590
1370
Specific Heat Capacity, J/kg-K 550
480
Thermal Conductivity, W/m-K 8.2
15
Thermal Expansion, µm/m-K 9.1
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.4
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
2.6

Otherwise Unclassified Properties

Density, g/cm3 4.5
7.8
Embodied Carbon, kg CO2/kg material 41
3.4
Embodied Energy, MJ/kg 670
50
Embodied Water, L/kg 270
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
210
Resilience: Unit (Modulus of Resilience), kJ/m3 1380
140
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 44
21
Strength to Weight: Bending, points 39
20
Thermal Diffusivity, mm2/s 3.3
4.0
Thermal Shock Resistance, points 52
13

Alloy Composition

Aluminum (Al), % 2.5 to 3.5
0
Carbon (C), % 0 to 0.1
0 to 0.080
Chromium (Cr), % 0
17.5 to 19.5
Copper (Cu), % 0
1.5 to 2.5
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.25
62 to 71.7
Manganese (Mn), % 0
0 to 2.0
Nickel (Ni), % 0 to 0.050
8.0 to 10.5
Niobium (Nb), % 0
0.1 to 0.5
Nitrogen (N), % 0
0 to 0.1
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
1.0 to 2.0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 92.5 to 95.5
0
Tungsten (W), % 0
0.2 to 0.8
Vanadium (V), % 2.0 to 3.0
0
Residuals, % 0 to 0.4
0