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S31266 Stainless Steel vs. R56406 Titanium

S31266 stainless steel belongs to the iron alloys classification, while R56406 titanium belongs to the titanium alloys. There are 30 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is S31266 stainless steel and the bottom bar is R56406 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
110
Elongation at Break, % 40
9.1
Fatigue Strength, MPa 400
480
Poisson's Ratio 0.28
0.32
Reduction in Area, % 56
16
Shear Modulus, GPa 81
40
Tensile Strength: Ultimate (UTS), MPa 860
980
Tensile Strength: Yield (Proof), MPa 470
850

Thermal Properties

Latent Heat of Fusion, J/g 310
410
Maximum Temperature: Mechanical, °C 1100
340
Melting Completion (Liquidus), °C 1470
1610
Melting Onset (Solidus), °C 1420
1560
Specific Heat Capacity, J/kg-K 460
560
Thermal Conductivity, W/m-K 12
7.1
Thermal Expansion, µm/m-K 16
9.6

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.8
1.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 37
36
Density, g/cm3 8.2
4.5
Embodied Carbon, kg CO2/kg material 6.5
38
Embodied Energy, MJ/kg 89
610
Embodied Water, L/kg 220
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 290
85
Resilience: Unit (Modulus of Resilience), kJ/m3 540
3420
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
35
Strength to Weight: Axial, points 29
61
Strength to Weight: Bending, points 24
49
Thermal Diffusivity, mm2/s 3.1
2.8
Thermal Shock Resistance, points 18
69

Alloy Composition

Aluminum (Al), % 0
5.5 to 6.8
Carbon (C), % 0 to 0.030
0 to 0.1
Chromium (Cr), % 23 to 25
0
Copper (Cu), % 1.0 to 2.5
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 34.1 to 46
0 to 0.3
Manganese (Mn), % 2.0 to 4.0
0
Molybdenum (Mo), % 5.2 to 6.2
0
Nickel (Ni), % 21 to 24
0
Nitrogen (N), % 0.35 to 0.6
0 to 0.050
Oxygen (O), % 0
0 to 0.2
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.020
0
Titanium (Ti), % 0
88.1 to 91
Tungsten (W), % 1.5 to 2.5
0
Vanadium (V), % 0
3.5 to 4.5