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S31727 Stainless Steel vs. Grade 19 Titanium

S31727 stainless steel belongs to the iron alloys classification, while grade 19 titanium belongs to the titanium alloys. There are 27 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 S31727 stainless steel and the bottom bar is grade 19 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
120
Elongation at Break, % 40
5.6 to 17
Fatigue Strength, MPa 240
550 to 620
Poisson's Ratio 0.28
0.32
Reduction in Area, % 56
22
Shear Modulus, GPa 78
47
Shear Strength, MPa 430
550 to 750
Tensile Strength: Ultimate (UTS), MPa 630
890 to 1300
Tensile Strength: Yield (Proof), MPa 270
870 to 1170

Thermal Properties

Latent Heat of Fusion, J/g 290
400
Maximum Temperature: Mechanical, °C 1010
370
Melting Completion (Liquidus), °C 1440
1660
Melting Onset (Solidus), °C 1390
1600
Specific Heat Capacity, J/kg-K 470
520
Thermal Expansion, µm/m-K 16
9.1

Otherwise Unclassified Properties

Base Metal Price, % relative 24
45
Density, g/cm3 8.0
5.0
Embodied Carbon, kg CO2/kg material 4.7
47
Embodied Energy, MJ/kg 64
760
Embodied Water, L/kg 180
230

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 200
70 to 150
Resilience: Unit (Modulus of Resilience), kJ/m3 190
3040 to 5530
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
33
Strength to Weight: Axial, points 22
49 to 72
Strength to Weight: Bending, points 20
41 to 53
Thermal Shock Resistance, points 14
57 to 83

Alloy Composition

Aluminum (Al), % 0
3.0 to 4.0
Carbon (C), % 0 to 0.030
0 to 0.050
Chromium (Cr), % 17.5 to 19
5.5 to 6.5
Copper (Cu), % 2.8 to 4.0
0
Hydrogen (H), % 0
0 to 0.020
Iron (Fe), % 53.7 to 61.3
0 to 0.3
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 3.8 to 4.5
3.5 to 4.5
Nickel (Ni), % 14.5 to 16.5
0
Nitrogen (N), % 0.15 to 0.21
0 to 0.030
Oxygen (O), % 0
0 to 0.12
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
71.1 to 77
Vanadium (V), % 0
7.5 to 8.5
Zirconium (Zr), % 0
3.5 to 4.5
Residuals, % 0
0 to 0.4