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Grade Ti-Pd17 Titanium vs. S39274 Stainless Steel

Grade Ti-Pd17 titanium belongs to the titanium alloys classification, while S39274 stainless steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is grade Ti-Pd17 titanium and the bottom bar is S39274 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
270
Elastic (Young's, Tensile) Modulus, GPa 110
210
Elongation at Break, % 22
17
Fatigue Strength, MPa 140
380
Poisson's Ratio 0.32
0.27
Rockwell C Hardness 21
28
Shear Modulus, GPa 40
81
Tensile Strength: Ultimate (UTS), MPa 270
900
Tensile Strength: Yield (Proof), MPa 190
620

Thermal Properties

Latent Heat of Fusion, J/g 420
300
Maximum Temperature: Mechanical, °C 320
1100
Melting Completion (Liquidus), °C 1660
1480
Melting Onset (Solidus), °C 1610
1430
Specific Heat Capacity, J/kg-K 540
470
Thermal Conductivity, W/m-K 21
16
Thermal Expansion, µm/m-K 8.7
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.6
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 7.1
2.4

Otherwise Unclassified Properties

Density, g/cm3 4.5
8.0
Embodied Carbon, kg CO2/kg material 36
4.3
Embodied Energy, MJ/kg 600
60
Embodied Water, L/kg 230
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 55
140
Resilience: Unit (Modulus of Resilience), kJ/m3 180
940
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 17
32
Strength to Weight: Bending, points 21
26
Thermal Diffusivity, mm2/s 8.8
4.2
Thermal Shock Resistance, points 21
25

Alloy Composition

Carbon (C), % 0 to 0.1
0 to 0.030
Chromium (Cr), % 0
24 to 26
Copper (Cu), % 0
0.2 to 0.8
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.2
57 to 65.6
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0
2.5 to 3.5
Nickel (Ni), % 0 to 0.030
6.0 to 8.0
Nitrogen (N), % 0
0.24 to 0.32
Oxygen (O), % 0 to 0.25
0
Palladium (Pd), % 0.040 to 0.080
0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0
0 to 0.8
Sulfur (S), % 0
0 to 0.020
Titanium (Ti), % 98.9 to 99.96
0
Tungsten (W), % 0
1.5 to 2.5
Residuals, % 0 to 0.4
0