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S31655 Stainless Steel vs. Grade 5 Titanium

S31655 stainless steel belongs to the iron alloys classification, while grade 5 titanium belongs to the titanium alloys. There are 30 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is S31655 stainless steel and the bottom bar is grade 5 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 39
8.6 to 11
Fatigue Strength, MPa 300
530 to 630
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 78
40
Shear Strength, MPa 490
600 to 710
Tensile Strength: Ultimate (UTS), MPa 710
1000 to 1190
Tensile Strength: Yield (Proof), MPa 350
910 to 1110

Thermal Properties

Latent Heat of Fusion, J/g 290
410
Maximum Temperature: Mechanical, °C 1010
330
Melting Completion (Liquidus), °C 1430
1610
Melting Onset (Solidus), °C 1380
1650
Specific Heat Capacity, J/kg-K 480
560
Thermal Conductivity, W/m-K 15
6.8
Thermal Expansion, µm/m-K 16
8.9

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
1.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 17
36
Density, g/cm3 7.8
4.4
Embodied Carbon, kg CO2/kg material 3.3
38
Embodied Energy, MJ/kg 46
610
Embodied Water, L/kg 160
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 230
100 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 310
3980 to 5880
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
35
Strength to Weight: Axial, points 25
62 to 75
Strength to Weight: Bending, points 23
50 to 56
Thermal Diffusivity, mm2/s 4.0
2.7
Thermal Shock Resistance, points 16
76 to 91

Alloy Composition

Aluminum (Al), % 0
5.5 to 6.8
Carbon (C), % 0 to 0.030
0 to 0.080
Chromium (Cr), % 19.5 to 21.5
0
Copper (Cu), % 0 to 1.0
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 63.2 to 71.9
0 to 0.4
Manganese (Mn), % 0 to 2.0
0
Molybdenum (Mo), % 0.5 to 1.5
0
Nickel (Ni), % 8.0 to 9.5
0
Nitrogen (N), % 0.14 to 0.25
0 to 0.050
Oxygen (O), % 0
0 to 0.2
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.015
0
Titanium (Ti), % 0
87.4 to 91
Vanadium (V), % 0
3.5 to 4.5
Yttrium (Y), % 0
0 to 0.0050
Residuals, % 0
0 to 0.4