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Grade 34 Titanium vs. S82012 Stainless Steel

Grade 34 titanium belongs to the titanium alloys classification, while S82012 stainless steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is grade 34 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, % 20
40
Fatigue Strength, MPa 310
480
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 41
78
Shear Strength, MPa 320
550
Tensile Strength: Ultimate (UTS), MPa 510
800
Tensile Strength: Yield (Proof), MPa 450
560

Thermal Properties

Latent Heat of Fusion, J/g 420
280
Maximum Temperature: Mechanical, °C 320
950
Melting Completion (Liquidus), °C 1660
1430
Melting Onset (Solidus), °C 1610
1380
Specific Heat Capacity, J/kg-K 540
480
Thermal Conductivity, W/m-K 21
15
Thermal Expansion, µm/m-K 8.7
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.4
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 6.7
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 55
11
Density, g/cm3 4.5
7.7
Embodied Carbon, kg CO2/kg material 33
2.4
Embodied Energy, MJ/kg 530
35
Embodied Water, L/kg 200
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
290
Resilience: Unit (Modulus of Resilience), kJ/m3 960
790
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 31
29
Strength to Weight: Bending, points 31
25
Thermal Diffusivity, mm2/s 8.4
3.9
Thermal Shock Resistance, points 39
23

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.050
Chromium (Cr), % 0.1 to 0.2
19 to 20.5
Copper (Cu), % 0
0 to 1.0
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.3
71.3 to 77.9
Manganese (Mn), % 0
2.0 to 4.0
Molybdenum (Mo), % 0
0.1 to 0.6
Nickel (Ni), % 0.35 to 0.55
0.8 to 1.5
Nitrogen (N), % 0 to 0.050
0.16 to 0.26
Oxygen (O), % 0 to 0.35
0
Palladium (Pd), % 0.010 to 0.020
0
Phosphorus (P), % 0
0 to 0.040
Ruthenium (Ru), % 0.020 to 0.040
0
Silicon (Si), % 0
0 to 0.8
Sulfur (S), % 0
0 to 0.0050
Titanium (Ti), % 98 to 99.52
0
Residuals, % 0 to 0.4
0