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Grade 27 Titanium vs. EN 1.8505 Steel

Grade 27 titanium belongs to the titanium alloys classification, while EN 1.8505 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 1.8505 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 27
13
Fatigue Strength, MPa 170
540
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 41
73
Shear Strength, MPa 180
630
Tensile Strength: Ultimate (UTS), MPa 270
1050
Tensile Strength: Yield (Proof), MPa 230
860

Thermal Properties

Latent Heat of Fusion, J/g 420
250
Maximum Temperature: Mechanical, °C 320
440
Melting Completion (Liquidus), °C 1660
1450
Melting Onset (Solidus), °C 1610
1410
Specific Heat Capacity, J/kg-K 540
480
Thermal Conductivity, W/m-K 21
39
Thermal Expansion, µm/m-K 8.7
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.6
7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 7.1
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 37
2.8
Density, g/cm3 4.5
7.8
Embodied Carbon, kg CO2/kg material 33
1.6
Embodied Energy, MJ/kg 530
22
Embodied Water, L/kg 320
65

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 70
120
Resilience: Unit (Modulus of Resilience), kJ/m3 240
1950
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 17
37
Strength to Weight: Bending, points 21
30
Thermal Diffusivity, mm2/s 8.8
11
Thermal Shock Resistance, points 21
31

Alloy Composition

Aluminum (Al), % 0
0.8 to 1.2
Carbon (C), % 0 to 0.080
0.28 to 0.35
Chromium (Cr), % 0
1.5 to 1.8
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.2
95.4 to 97.1
Manganese (Mn), % 0
0.4 to 0.7
Molybdenum (Mo), % 0
0.2 to 0.4
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 0.035
Titanium (Ti), % 99 to 99.92
0
Residuals, % 0 to 0.4
0