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EN 1.4905 Stainless Steel vs. Grade Ti-Pd18 Titanium

EN 1.4905 stainless steel belongs to the iron alloys classification, while grade Ti-Pd18 titanium belongs to the titanium alloys. There are 28 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is EN 1.4905 stainless steel and the bottom bar is grade Ti-Pd18 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
110
Elongation at Break, % 19
17
Fatigue Strength, MPa 330
350
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 76
40
Tensile Strength: Ultimate (UTS), MPa 740
710
Tensile Strength: Yield (Proof), MPa 510
540

Thermal Properties

Latent Heat of Fusion, J/g 270
410
Maximum Temperature: Mechanical, °C 660
330
Melting Completion (Liquidus), °C 1480
1640
Melting Onset (Solidus), °C 1440
1590
Specific Heat Capacity, J/kg-K 470
550
Thermal Conductivity, W/m-K 26
8.2
Thermal Expansion, µm/m-K 11
9.1

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.7
1.4
Electrical Conductivity: Equal Weight (Specific), % IACS 4.2
2.7

Otherwise Unclassified Properties

Density, g/cm3 7.9
4.5
Embodied Carbon, kg CO2/kg material 2.8
41
Embodied Energy, MJ/kg 40
670
Embodied Water, L/kg 90
270

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
110
Resilience: Unit (Modulus of Resilience), kJ/m3 680
1380
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
35
Strength to Weight: Axial, points 26
44
Strength to Weight: Bending, points 23
39
Thermal Diffusivity, mm2/s 7.0
3.3
Thermal Shock Resistance, points 25
52

Alloy Composition

Aluminum (Al), % 0 to 0.040
2.5 to 3.5
Boron (B), % 0.00050 to 0.0050
0
Carbon (C), % 0.090 to 0.13
0 to 0.1
Chromium (Cr), % 8.5 to 9.5
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 86.2 to 88.8
0 to 0.25
Manganese (Mn), % 0.3 to 0.6
0
Molybdenum (Mo), % 0.9 to 1.1
0
Nickel (Ni), % 0.1 to 0.4
0 to 0.050
Niobium (Nb), % 0.060 to 0.1
0
Nitrogen (N), % 0.050 to 0.090
0
Oxygen (O), % 0
0 to 0.15
Palladium (Pd), % 0
0.040 to 0.080
Phosphorus (P), % 0 to 0.020
0
Silicon (Si), % 0.1 to 0.5
0
Sulfur (S), % 0 to 0.010
0
Titanium (Ti), % 0
92.5 to 95.5
Tungsten (W), % 0.9 to 1.1
0
Vanadium (V), % 0.18 to 0.25
2.0 to 3.0
Residuals, % 0
0 to 0.4