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Grade Ti-Pd16 Titanium vs. S43940 Stainless Steel

Grade Ti-Pd16 titanium belongs to the titanium alloys classification, while S43940 stainless steel belongs to the iron alloys. There are 30 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-Pd16 titanium and the bottom bar is S43940 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
160
Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 17
21
Fatigue Strength, MPa 200
180
Poisson's Ratio 0.32
0.28
Rockwell B Hardness 83
76
Shear Modulus, GPa 40
77
Tensile Strength: Ultimate (UTS), MPa 390
490
Tensile Strength: Yield (Proof), MPa 310
280

Thermal Properties

Latent Heat of Fusion, J/g 420
280
Maximum Temperature: Mechanical, °C 320
890
Melting Completion (Liquidus), °C 1660
1440
Melting Onset (Solidus), °C 1610
1400
Specific Heat Capacity, J/kg-K 540
480
Thermal Conductivity, W/m-K 22
25
Thermal Expansion, µm/m-K 8.7
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.6
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 7.1
3.4

Otherwise Unclassified Properties

Density, g/cm3 4.5
7.7
Embodied Carbon, kg CO2/kg material 36
2.6
Embodied Energy, MJ/kg 600
38
Embodied Water, L/kg 230
120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 62
86
Resilience: Unit (Modulus of Resilience), kJ/m3 440
200
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 24
18
Strength to Weight: Bending, points 26
18
Thermal Diffusivity, mm2/s 8.9
6.8
Thermal Shock Resistance, points 30
18

Alloy Composition

Carbon (C), % 0 to 0.1
0 to 0.030
Chromium (Cr), % 0
17.5 to 18.5
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.3
78.2 to 82.1
Manganese (Mn), % 0
0 to 1.0
Nickel (Ni), % 0 to 0.030
0
Niobium (Nb), % 0
0.3 to 0.6
Oxygen (O), % 0 to 0.18
0
Palladium (Pd), % 0.040 to 0.080
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 98.8 to 99.96
0.1 to 0.6
Residuals, % 0 to 0.4
0