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Grade 15 Titanium vs. EN 1.8881 Steel

Grade 15 titanium belongs to the titanium alloys classification, while EN 1.8881 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 15 titanium and the bottom bar is EN 1.8881 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 20
16
Fatigue Strength, MPa 290
460
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 41
73
Shear Strength, MPa 340
510
Tensile Strength: Ultimate (UTS), MPa 540
830
Tensile Strength: Yield (Proof), MPa 430
710

Thermal Properties

Latent Heat of Fusion, J/g 420
260
Maximum Temperature: Mechanical, °C 320
420
Melting Completion (Liquidus), °C 1660
1460
Melting Onset (Solidus), °C 1610
1420
Specific Heat Capacity, J/kg-K 540
470
Thermal Conductivity, W/m-K 21
40
Thermal Expansion, µm/m-K 8.7
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.4
8.1
Electrical Conductivity: Equal Weight (Specific), % IACS 6.7
9.3

Otherwise Unclassified Properties

Base Metal Price, % relative 37
3.7
Density, g/cm3 4.5
7.8
Embodied Carbon, kg CO2/kg material 32
1.9
Embodied Energy, MJ/kg 520
26
Embodied Water, L/kg 210
54

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
120
Resilience: Unit (Modulus of Resilience), kJ/m3 870
1320
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
24
Strength to Weight: Axial, points 33
29
Strength to Weight: Bending, points 33
25
Thermal Diffusivity, mm2/s 8.4
11
Thermal Shock Resistance, points 41
24

Alloy Composition


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Boron (B), % 0
0 to 0.0050
Carbon (C), % 0 to 0.080
0 to 0.2
Chromium (Cr), % 0
0 to 1.5
Copper (Cu), % 0
0 to 0.3
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.3
91.9 to 100
Manganese (Mn), % 0
0 to 1.7
Molybdenum (Mo), % 0
0 to 0.7
Nickel (Ni), % 0.4 to 0.6
0 to 2.5
Niobium (Nb), % 0
0 to 0.060
Nitrogen (N), % 0 to 0.050
0 to 0.015
Oxygen (O), % 0 to 0.25
0
Phosphorus (P), % 0
0 to 0.020
Ruthenium (Ru), % 0.040 to 0.060
0
Silicon (Si), % 0
0 to 0.8
Sulfur (S), % 0
0 to 0.0080
Titanium (Ti), % 98.2 to 99.56
0 to 0.050
Vanadium (V), % 0
0 to 0.12
Zirconium (Zr), % 0
0 to 0.15
Residuals, % 0 to 0.4
0