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Grade 15 Titanium vs. EN 1.3555 Steel

Grade 15 titanium belongs to the titanium alloys classification, while EN 1.3555 steel belongs to the iron alloys. There are 22 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is grade 15 titanium and the bottom bar is EN 1.3555 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
190
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 41
75
Tensile Strength: Ultimate (UTS), MPa 540
770

Thermal Properties

Latent Heat of Fusion, J/g 420
260
Maximum Temperature: Mechanical, °C 320
540
Melting Completion (Liquidus), °C 1660
1500
Melting Onset (Solidus), °C 1610
1450
Specific Heat Capacity, J/kg-K 540
460
Thermal Expansion, µm/m-K 8.7
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.4
9.3
Electrical Conductivity: Equal Weight (Specific), % IACS 6.7
11

Otherwise Unclassified Properties

Base Metal Price, % relative 37
11
Density, g/cm3 4.5
7.9
Embodied Carbon, kg CO2/kg material 32
5.6
Embodied Energy, MJ/kg 520
81
Embodied Water, L/kg 210
90

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
24
Strength to Weight: Axial, points 33
27
Strength to Weight: Bending, points 33
23
Thermal Shock Resistance, points 41
22

Alloy Composition


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Carbon (C), % 0 to 0.080
0.1 to 0.15
Chromium (Cr), % 0
3.9 to 4.3
Copper (Cu), % 0
0 to 0.1
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.3
85.4 to 87.7
Manganese (Mn), % 0
0.15 to 0.35
Molybdenum (Mo), % 0
4.0 to 4.5
Nickel (Ni), % 0.4 to 0.6
3.2 to 3.6
Nitrogen (N), % 0 to 0.050
0
Oxygen (O), % 0 to 0.25
0
Phosphorus (P), % 0
0 to 0.015
Ruthenium (Ru), % 0.040 to 0.060
0
Silicon (Si), % 0
0.1 to 0.25
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 98.2 to 99.56
0
Tungsten (W), % 0
0 to 0.15
Vanadium (V), % 0
1.0 to 1.3
Residuals, % 0 to 0.4
0