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EN 1.4938 Stainless Steel vs. Grade Ti-Pd8A Titanium

EN 1.4938 stainless steel belongs to the iron alloys classification, while grade Ti-Pd8A titanium belongs to the titanium 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 EN 1.4938 stainless steel and the bottom bar is grade Ti-Pd8A titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 16 to 17
13
Fatigue Strength, MPa 390 to 520
260
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 76
40
Tensile Strength: Ultimate (UTS), MPa 870 to 1030
500
Tensile Strength: Yield (Proof), MPa 640 to 870
430

Thermal Properties

Latent Heat of Fusion, J/g 270
420
Maximum Temperature: Mechanical, °C 750
320
Melting Completion (Liquidus), °C 1460
1660
Melting Onset (Solidus), °C 1420
1610
Specific Heat Capacity, J/kg-K 470
540
Thermal Conductivity, W/m-K 30
21
Thermal Expansion, µm/m-K 11
8.7

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
3.5
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
6.9

Otherwise Unclassified Properties

Density, g/cm3 7.8
4.5
Embodied Carbon, kg CO2/kg material 3.3
49
Embodied Energy, MJ/kg 47
840
Embodied Water, L/kg 110
520

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 160
65
Resilience: Unit (Modulus of Resilience), kJ/m3 1050 to 1920
880
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
35
Strength to Weight: Axial, points 31 to 37
31
Strength to Weight: Bending, points 26 to 29
31
Thermal Diffusivity, mm2/s 8.1
8.6
Thermal Shock Resistance, points 30 to 35
39

Alloy Composition


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Carbon (C), % 0.080 to 0.15
0 to 0.1
Chromium (Cr), % 11 to 12.5
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 80.5 to 84.8
0 to 0.25
Manganese (Mn), % 0.4 to 0.9
0
Molybdenum (Mo), % 1.5 to 2.0
0
Nickel (Ni), % 2.0 to 3.0
0 to 0.050
Nitrogen (N), % 0.020 to 0.040
0
Oxygen (O), % 0
0 to 0.4
Palladium (Pd), % 0
0.12 to 0.3
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 0 to 0.5
0
Sulfur (S), % 0 to 0.015
0
Titanium (Ti), % 0
98.8 to 99.9
Vanadium (V), % 0.25 to 0.4
0
Residuals, % 0
0 to 0.4