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Grade Ti-Pd18 Titanium vs. EN 1.4557 Stainless Steel

Grade Ti-Pd18 titanium belongs to the titanium alloys classification, while EN 1.4557 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 1.4557 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 320
160
Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 17
40
Fatigue Strength, MPa 350
260
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 40
80
Tensile Strength: Ultimate (UTS), MPa 710
560
Tensile Strength: Yield (Proof), MPa 540
300

Thermal Properties

Latent Heat of Fusion, J/g 410
300
Maximum Temperature: Mechanical, °C 330
1090
Melting Completion (Liquidus), °C 1640
1460
Melting Onset (Solidus), °C 1590
1420
Specific Heat Capacity, J/kg-K 550
460
Thermal Conductivity, W/m-K 8.2
15
Thermal Expansion, µm/m-K 9.1
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.4
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
2.2

Otherwise Unclassified Properties

Density, g/cm3 4.5
8.0
Embodied Carbon, kg CO2/kg material 41
5.6
Embodied Energy, MJ/kg 670
76
Embodied Water, L/kg 270
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
190
Resilience: Unit (Modulus of Resilience), kJ/m3 1380
210
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
24
Strength to Weight: Axial, points 44
19
Strength to Weight: Bending, points 39
19
Thermal Diffusivity, mm2/s 3.3
4.0
Thermal Shock Resistance, points 52
12

Alloy Composition

Aluminum (Al), % 2.5 to 3.5
0
Carbon (C), % 0 to 0.1
0 to 0.020
Chromium (Cr), % 0
19.5 to 20.5
Copper (Cu), % 0
0.5 to 1.0
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.25
49.5 to 56.3
Manganese (Mn), % 0
0 to 1.2
Molybdenum (Mo), % 0
6.0 to 7.0
Nickel (Ni), % 0 to 0.050
17.5 to 19.5
Nitrogen (N), % 0
0.18 to 0.24
Oxygen (O), % 0 to 0.15
0
Palladium (Pd), % 0.040 to 0.080
0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 92.5 to 95.5
0
Vanadium (V), % 2.0 to 3.0
0
Residuals, % 0 to 0.4
0