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AISI 440B Stainless Steel vs. Grade Ti-Pd16 Titanium

AISI 440B stainless steel belongs to the iron alloys classification, while grade Ti-Pd16 titanium belongs to the titanium alloys. There are 27 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 AISI 440B stainless steel and the bottom bar is grade Ti-Pd16 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 3.0 to 18
17
Fatigue Strength, MPa 260 to 850
200
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 77
40
Tensile Strength: Ultimate (UTS), MPa 740 to 1930
390
Tensile Strength: Yield (Proof), MPa 430 to 1860
310

Thermal Properties

Latent Heat of Fusion, J/g 280
420
Maximum Temperature: Mechanical, °C 870
320
Melting Completion (Liquidus), °C 1480
1660
Melting Onset (Solidus), °C 1370
1610
Specific Heat Capacity, J/kg-K 480
540
Thermal Conductivity, W/m-K 23
22
Thermal Expansion, µm/m-K 10
8.7

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
3.6
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
7.1

Otherwise Unclassified Properties

Density, g/cm3 7.7
4.5
Embodied Carbon, kg CO2/kg material 2.2
36
Embodied Energy, MJ/kg 31
600
Embodied Water, L/kg 120
230

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 57 to 110
62
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
35
Strength to Weight: Axial, points 27 to 70
24
Strength to Weight: Bending, points 24 to 45
26
Thermal Diffusivity, mm2/s 6.1
8.9
Thermal Shock Resistance, points 27 to 70
30

Alloy Composition

Carbon (C), % 0.75 to 1.0
0 to 0.1
Chromium (Cr), % 16 to 18
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 78.2 to 83.3
0 to 0.3
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 0 to 0.75
0
Nickel (Ni), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.18
Palladium (Pd), % 0
0.040 to 0.080
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.015
0
Titanium (Ti), % 0
98.8 to 99.96
Residuals, % 0
0 to 0.4