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Grade 3 Titanium vs. S38100 Stainless Steel

Grade 3 titanium belongs to the titanium alloys classification, while S38100 stainless steel belongs to the iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is grade 3 titanium and the bottom bar is S38100 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170
190
Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 21
45
Fatigue Strength, MPa 300
210
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 39
76
Shear Strength, MPa 320
400
Tensile Strength: Ultimate (UTS), MPa 510
580
Tensile Strength: Yield (Proof), MPa 440
230

Thermal Properties

Latent Heat of Fusion, J/g 420
320
Maximum Temperature: Mechanical, °C 320
970
Melting Completion (Liquidus), °C 1660
1400
Melting Onset (Solidus), °C 1610
1350
Specific Heat Capacity, J/kg-K 540
480
Thermal Conductivity, W/m-K 21
15
Thermal Expansion, µm/m-K 9.2
16

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
20
Density, g/cm3 4.5
7.8
Embodied Carbon, kg CO2/kg material 31
3.8
Embodied Energy, MJ/kg 510
54
Embodied Water, L/kg 110
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
210
Resilience: Unit (Modulus of Resilience), kJ/m3 910
140
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 32
21
Strength to Weight: Bending, points 32
20
Thermal Diffusivity, mm2/s 8.6
4.0
Thermal Shock Resistance, points 37
13

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.080
Chromium (Cr), % 0
17 to 19
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.3
57.9 to 64
Manganese (Mn), % 0
0 to 2.0
Nickel (Ni), % 0
17.5 to 18.5
Nitrogen (N), % 0 to 0.050
0
Oxygen (O), % 0 to 0.35
0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0
1.5 to 2.5
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 98.8 to 100
0
Residuals, % 0 to 0.4
0