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AISI 446 Stainless Steel vs. Grade Ti-Pd18 Titanium

AISI 446 stainless steel belongs to the iron alloys classification, while grade Ti-Pd18 titanium belongs to the titanium alloys. There are 29 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is AISI 446 stainless steel and the bottom bar is grade Ti-Pd18 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
320
Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 23
17
Fatigue Strength, MPa 200
350
Poisson's Ratio 0.27
0.32
Shear Modulus, GPa 79
40
Tensile Strength: Ultimate (UTS), MPa 570
710
Tensile Strength: Yield (Proof), MPa 300
540

Thermal Properties

Latent Heat of Fusion, J/g 290
410
Maximum Temperature: Mechanical, °C 1180
330
Melting Completion (Liquidus), °C 1510
1640
Melting Onset (Solidus), °C 1430
1590
Specific Heat Capacity, J/kg-K 490
550
Thermal Conductivity, W/m-K 17
8.2
Thermal Expansion, µm/m-K 11
9.1

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
1.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
2.7

Otherwise Unclassified Properties

Density, g/cm3 7.7
4.5
Embodied Carbon, kg CO2/kg material 2.4
41
Embodied Energy, MJ/kg 35
670
Embodied Water, L/kg 150
270

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
110
Resilience: Unit (Modulus of Resilience), kJ/m3 230
1380
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 26
35
Strength to Weight: Axial, points 21
44
Strength to Weight: Bending, points 20
39
Thermal Diffusivity, mm2/s 4.6
3.3
Thermal Shock Resistance, points 19
52

Alloy Composition

Aluminum (Al), % 0
2.5 to 3.5
Carbon (C), % 0 to 0.2
0 to 0.1
Chromium (Cr), % 23 to 27
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 69.2 to 77
0 to 0.25
Manganese (Mn), % 0 to 1.5
0
Nickel (Ni), % 0 to 0.75
0 to 0.050
Nitrogen (N), % 0 to 0.25
0
Oxygen (O), % 0
0 to 0.15
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 0.030
0
Titanium (Ti), % 0
92.5 to 95.5
Vanadium (V), % 0
2.0 to 3.0
Residuals, % 0
0 to 0.4