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Grade Ti-Pd18 Titanium vs. EN 1.4458 Stainless Steel

Grade Ti-Pd18 titanium belongs to the titanium alloys classification, while EN 1.4458 stainless steel belongs to the iron alloys. There are 29 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-Pd18 titanium and the bottom bar is EN 1.4458 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 320
150
Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 17
34
Fatigue Strength, MPa 350
150
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 40
78
Tensile Strength: Ultimate (UTS), MPa 710
510
Tensile Strength: Yield (Proof), MPa 540
190

Thermal Properties

Latent Heat of Fusion, J/g 410
300
Maximum Temperature: Mechanical, °C 330
1100
Melting Completion (Liquidus), °C 1640
1420
Melting Onset (Solidus), °C 1590
1370
Specific Heat Capacity, J/kg-K 550
470
Thermal Conductivity, W/m-K 8.2
16
Thermal Expansion, µm/m-K 9.1
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.4
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
1.9

Otherwise Unclassified Properties

Density, g/cm3 4.5
8.0
Embodied Carbon, kg CO2/kg material 41
5.4
Embodied Energy, MJ/kg 670
75
Embodied Water, L/kg 270
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
140
Resilience: Unit (Modulus of Resilience), kJ/m3 1380
89
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
24
Strength to Weight: Axial, points 44
17
Strength to Weight: Bending, points 39
18
Thermal Diffusivity, mm2/s 3.3
4.2
Thermal Shock Resistance, points 52
12

Alloy Composition

Aluminum (Al), % 2.5 to 3.5
0
Carbon (C), % 0 to 0.1
0 to 0.030
Chromium (Cr), % 0
19 to 22
Copper (Cu), % 0
0 to 2.0
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.25
40.2 to 53
Manganese (Mn), % 0
0 to 2.0
Molybdenum (Mo), % 0
2.0 to 2.5
Nickel (Ni), % 0 to 0.050
26 to 30
Nitrogen (N), % 0
0 to 0.2
Oxygen (O), % 0 to 0.15
0
Palladium (Pd), % 0.040 to 0.080
0
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.025
Titanium (Ti), % 92.5 to 95.5
0
Vanadium (V), % 2.0 to 3.0
0
Residuals, % 0 to 0.4
0