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S39274 Stainless Steel vs. R56406 Titanium

S39274 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 (5, in this case) are not shown.

For each property being compared, the top bar is S39274 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, % 17
9.1
Fatigue Strength, MPa 380
480
Poisson's Ratio 0.27
0.32
Reduction in Area, % 34
16
Shear Modulus, GPa 81
40
Tensile Strength: Ultimate (UTS), MPa 900
980
Tensile Strength: Yield (Proof), MPa 620
850

Thermal Properties

Latent Heat of Fusion, J/g 300
410
Maximum Temperature: Mechanical, °C 1100
340
Melting Completion (Liquidus), °C 1480
1610
Melting Onset (Solidus), °C 1430
1560
Specific Heat Capacity, J/kg-K 470
560
Thermal Conductivity, W/m-K 16
7.1
Thermal Expansion, µm/m-K 13
9.6

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
1.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 24
36
Density, g/cm3 8.0
4.5
Embodied Carbon, kg CO2/kg material 4.3
38
Embodied Energy, MJ/kg 60
610
Embodied Water, L/kg 180
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
85
Resilience: Unit (Modulus of Resilience), kJ/m3 940
3420
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
35
Strength to Weight: Axial, points 32
61
Strength to Weight: Bending, points 26
49
Thermal Diffusivity, mm2/s 4.2
2.8
Thermal Shock Resistance, points 25
69

Alloy Composition

Aluminum (Al), % 0
5.5 to 6.8
Carbon (C), % 0 to 0.030
0 to 0.1
Chromium (Cr), % 24 to 26
0
Copper (Cu), % 0.2 to 0.8
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 57 to 65.6
0 to 0.3
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 2.5 to 3.5
0
Nickel (Ni), % 6.0 to 8.0
0
Nitrogen (N), % 0.24 to 0.32
0 to 0.050
Oxygen (O), % 0
0 to 0.2
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0 to 0.8
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