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EN 1.4655 Stainless Steel vs. Grade Ti-Pd18 Titanium

EN 1.4655 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 (6, in this case) are not shown.

For each property being compared, the top bar is EN 1.4655 stainless steel and the bottom bar is grade Ti-Pd18 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 23 to 25
17
Fatigue Strength, MPa 320
350
Poisson's Ratio 0.27
0.32
Shear Modulus, GPa 78
40
Tensile Strength: Ultimate (UTS), MPa 720 to 730
710
Tensile Strength: Yield (Proof), MPa 450 to 480
540

Thermal Properties

Latent Heat of Fusion, J/g 290
410
Maximum Temperature: Mechanical, °C 1050
330
Melting Completion (Liquidus), °C 1420
1640
Melting Onset (Solidus), °C 1370
1590
Specific Heat Capacity, J/kg-K 480
550
Thermal Conductivity, W/m-K 15
8.2
Thermal Expansion, µm/m-K 13
9.1

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
1.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.7

Otherwise Unclassified Properties

Density, g/cm3 7.7
4.5
Embodied Carbon, kg CO2/kg material 2.9
41
Embodied Energy, MJ/kg 41
670
Embodied Water, L/kg 160
270

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 150 to 160
110
Resilience: Unit (Modulus of Resilience), kJ/m3 510 to 580
1380
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
35
Strength to Weight: Axial, points 26
44
Strength to Weight: Bending, points 23
39
Thermal Diffusivity, mm2/s 4.0
3.3
Thermal Shock Resistance, points 20
52

Alloy Composition

Aluminum (Al), % 0
2.5 to 3.5
Carbon (C), % 0 to 0.030
0 to 0.1
Chromium (Cr), % 22 to 24
0
Copper (Cu), % 1.0 to 3.0
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 63.6 to 73.4
0 to 0.25
Manganese (Mn), % 0 to 2.0
0
Molybdenum (Mo), % 0.1 to 0.6
0
Nickel (Ni), % 3.5 to 5.5
0 to 0.050
Nitrogen (N), % 0.050 to 0.2
0
Oxygen (O), % 0
0 to 0.15
Palladium (Pd), % 0
0.040 to 0.080
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.015
0
Titanium (Ti), % 0
92.5 to 95.5
Vanadium (V), % 0
2.0 to 3.0
Residuals, % 0
0 to 0.4