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Grade 19 Titanium vs. S31254 Stainless Steel

Grade 19 titanium belongs to the titanium alloys classification, while S31254 stainless steel belongs to the iron alloys. There are 29 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 grade 19 titanium and the bottom bar is S31254 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
200
Elongation at Break, % 5.6 to 17
40
Fatigue Strength, MPa 550 to 620
290
Poisson's Ratio 0.32
0.28
Reduction in Area, % 22
56
Shear Modulus, GPa 47
80
Shear Strength, MPa 550 to 750
490
Tensile Strength: Ultimate (UTS), MPa 890 to 1300
720
Tensile Strength: Yield (Proof), MPa 870 to 1170
330

Thermal Properties

Latent Heat of Fusion, J/g 400
300
Maximum Temperature: Mechanical, °C 370
1090
Melting Completion (Liquidus), °C 1660
1460
Melting Onset (Solidus), °C 1600
1420
Specific Heat Capacity, J/kg-K 520
460
Thermal Conductivity, W/m-K 6.2
14
Thermal Expansion, µm/m-K 9.1
17

Otherwise Unclassified Properties

Base Metal Price, % relative 45
28
Density, g/cm3 5.0
8.0
Embodied Carbon, kg CO2/kg material 47
5.5
Embodied Energy, MJ/kg 760
74
Embodied Water, L/kg 230
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 70 to 150
240
Resilience: Unit (Modulus of Resilience), kJ/m3 3040 to 5530
270
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 33
24
Strength to Weight: Axial, points 49 to 72
25
Strength to Weight: Bending, points 41 to 53
22
Thermal Diffusivity, mm2/s 2.4
3.8
Thermal Shock Resistance, points 57 to 83
15

Alloy Composition

Aluminum (Al), % 3.0 to 4.0
0
Carbon (C), % 0 to 0.050
0 to 0.020
Chromium (Cr), % 5.5 to 6.5
19.5 to 20.5
Copper (Cu), % 0
0.5 to 1.0
Hydrogen (H), % 0 to 0.020
0
Iron (Fe), % 0 to 0.3
51.4 to 56.3
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 3.5 to 4.5
6.0 to 6.5
Nickel (Ni), % 0
17.5 to 18.5
Nitrogen (N), % 0 to 0.030
0.18 to 0.22
Oxygen (O), % 0 to 0.12
0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0
0 to 0.8
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 71.1 to 77
0
Vanadium (V), % 7.5 to 8.5
0
Zirconium (Zr), % 3.5 to 4.5
0
Residuals, % 0 to 0.4
0