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Grade 27 Titanium vs. EN 1.7366 Steel

Grade 27 titanium belongs to the titanium alloys classification, while EN 1.7366 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 27 titanium and the bottom bar is EN 1.7366 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 27
17 to 19
Fatigue Strength, MPa 170
160 to 320
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 41
74
Shear Strength, MPa 180
290 to 440
Tensile Strength: Ultimate (UTS), MPa 270
460 to 710
Tensile Strength: Yield (Proof), MPa 230
230 to 480

Thermal Properties

Latent Heat of Fusion, J/g 420
260
Maximum Temperature: Mechanical, °C 320
510
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 3.6
8.1
Electrical Conductivity: Equal Weight (Specific), % IACS 7.1
9.3

Otherwise Unclassified Properties

Base Metal Price, % relative 37
4.3
Density, g/cm3 4.5
7.8
Embodied Carbon, kg CO2/kg material 33
1.7
Embodied Energy, MJ/kg 530
23
Embodied Water, L/kg 320
69

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 70
74 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 240
140 to 600
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 17
16 to 25
Strength to Weight: Bending, points 21
17 to 23
Thermal Diffusivity, mm2/s 8.8
11
Thermal Shock Resistance, points 21
13 to 20

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.18
Chromium (Cr), % 0
4.0 to 6.0
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.2
91.9 to 95.3
Manganese (Mn), % 0
0.3 to 0.8
Molybdenum (Mo), % 0
0.45 to 0.65
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.18
0
Phosphorus (P), % 0
0 to 0.025
Ruthenium (Ru), % 0.080 to 0.14
0
Silicon (Si), % 0
0 to 0.4
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 99 to 99.92
0
Residuals, % 0 to 0.4
0