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Grade 38 Titanium vs. S30530 Stainless Steel

Grade 38 titanium belongs to the titanium alloys classification, while S30530 stainless steel belongs to the iron alloys. There are 30 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 38 titanium and the bottom bar is S30530 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 11
46
Fatigue Strength, MPa 530
210
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 40
77
Shear Strength, MPa 600
410
Tensile Strength: Ultimate (UTS), MPa 1000
590
Tensile Strength: Yield (Proof), MPa 910
230

Thermal Properties

Latent Heat of Fusion, J/g 410
310
Maximum Temperature: Mechanical, °C 330
970
Melting Completion (Liquidus), °C 1620
1410
Melting Onset (Solidus), °C 1570
1370
Specific Heat Capacity, J/kg-K 550
480
Thermal Conductivity, W/m-K 8.0
15
Thermal Expansion, µm/m-K 9.3
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.2
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 36
18
Density, g/cm3 4.5
7.8
Embodied Carbon, kg CO2/kg material 35
3.4
Embodied Energy, MJ/kg 560
48
Embodied Water, L/kg 160
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
210
Resilience: Unit (Modulus of Resilience), kJ/m3 3840
130
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 62
21
Strength to Weight: Bending, points 49
20
Thermal Diffusivity, mm2/s 3.2
4.1
Thermal Shock Resistance, points 72
13

Alloy Composition

Aluminum (Al), % 3.5 to 4.5
0
Carbon (C), % 0 to 0.080
0 to 0.080
Chromium (Cr), % 0
17 to 20.5
Copper (Cu), % 0
0.75 to 3.5
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 1.2 to 1.8
58.4 to 72.5
Manganese (Mn), % 0
0 to 2.0
Molybdenum (Mo), % 0
0.75 to 1.5
Nickel (Ni), % 0
8.5 to 11.5
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0.2 to 0.3
0
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0
0.5 to 2.5
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 89.9 to 93.1
0
Vanadium (V), % 2.0 to 3.0
0
Residuals, % 0 to 0.4
0