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Grade 23 Titanium vs. S82012 Stainless Steel

Grade 23 titanium belongs to the titanium alloys classification, while S82012 stainless steel belongs to the iron alloys. There are 31 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 grade 23 titanium and the bottom bar is S82012 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 6.7 to 11
40
Fatigue Strength, MPa 470 to 500
480
Poisson's Ratio 0.32
0.28
Rockwell C Hardness 32
27
Shear Modulus, GPa 40
78
Shear Strength, MPa 540 to 570
550
Tensile Strength: Ultimate (UTS), MPa 930 to 940
800
Tensile Strength: Yield (Proof), MPa 850 to 870
560

Thermal Properties

Latent Heat of Fusion, J/g 410
280
Maximum Temperature: Mechanical, °C 340
950
Melting Completion (Liquidus), °C 1610
1430
Melting Onset (Solidus), °C 1560
1380
Specific Heat Capacity, J/kg-K 560
480
Thermal Conductivity, W/m-K 7.1
15
Thermal Expansion, µm/m-K 9.4
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.0
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 36
11
Density, g/cm3 4.4
7.7
Embodied Carbon, kg CO2/kg material 38
2.4
Embodied Energy, MJ/kg 610
35
Embodied Water, L/kg 200
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 61 to 100
290
Resilience: Unit (Modulus of Resilience), kJ/m3 3430 to 3560
790
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 58 to 59
29
Strength to Weight: Bending, points 48
25
Thermal Diffusivity, mm2/s 2.9
3.9
Thermal Shock Resistance, points 67 to 68
23

Alloy Composition

Aluminum (Al), % 5.5 to 6.5
0
Carbon (C), % 0 to 0.080
0 to 0.050
Chromium (Cr), % 0
19 to 20.5
Copper (Cu), % 0
0 to 1.0
Hydrogen (H), % 0 to 0.013
0
Iron (Fe), % 0 to 0.25
71.3 to 77.9
Manganese (Mn), % 0
2.0 to 4.0
Molybdenum (Mo), % 0
0.1 to 0.6
Nickel (Ni), % 0
0.8 to 1.5
Nitrogen (N), % 0 to 0.030
0.16 to 0.26
Oxygen (O), % 0 to 0.13
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 0.8
Sulfur (S), % 0
0 to 0.0050
Titanium (Ti), % 88.1 to 91
0
Vanadium (V), % 3.5 to 4.5
0
Residuals, % 0 to 0.4
0