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Grade 12 Titanium vs. S32803 Stainless Steel

Grade 12 titanium belongs to the titanium alloys classification, while S32803 stainless steel belongs to the iron alloys. There are 31 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 12 titanium and the bottom bar is S32803 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170
210
Elastic (Young's, Tensile) Modulus, GPa 110
210
Elongation at Break, % 21
18
Fatigue Strength, MPa 280
350
Poisson's Ratio 0.32
0.27
Shear Modulus, GPa 39
81
Shear Strength, MPa 330
420
Tensile Strength: Ultimate (UTS), MPa 530
680
Tensile Strength: Yield (Proof), MPa 410
560

Thermal Properties

Latent Heat of Fusion, J/g 420
300
Maximum Temperature: Mechanical, °C 320
1100
Melting Completion (Liquidus), °C 1660
1450
Melting Onset (Solidus), °C 1610
1400
Specific Heat Capacity, J/kg-K 540
480
Thermal Conductivity, W/m-K 21
16
Thermal Expansion, µm/m-K 9.6
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.3
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 6.6
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 37
19
Density, g/cm3 4.5
7.7
Embodied Carbon, kg CO2/kg material 31
3.7
Embodied Energy, MJ/kg 500
53
Embodied Water, L/kg 110
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
120
Resilience: Unit (Modulus of Resilience), kJ/m3 770
760
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 32
25
Strength to Weight: Bending, points 32
22
Thermal Diffusivity, mm2/s 8.5
4.4
Thermal Shock Resistance, points 37
22

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.015
Chromium (Cr), % 0
28 to 29
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.3
62.9 to 67.1
Manganese (Mn), % 0
0 to 0.5
Molybdenum (Mo), % 0.2 to 0.4
1.8 to 2.5
Nickel (Ni), % 0.6 to 0.9
3.0 to 4.0
Niobium (Nb), % 0
0.15 to 0.5
Nitrogen (N), % 0 to 0.030
0 to 0.020
Oxygen (O), % 0 to 0.25
0
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0
0 to 0.55
Sulfur (S), % 0
0 to 0.0035
Titanium (Ti), % 97.6 to 99.2
0
Residuals, % 0 to 0.4
0