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Grade 27 Titanium vs. EN 1.7711 Steel

Grade 27 titanium belongs to the titanium alloys classification, while EN 1.7711 steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is grade 27 titanium and the bottom bar is EN 1.7711 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 27
16 to 22
Fatigue Strength, MPa 170
290 to 520
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 41
73
Shear Strength, MPa 180
440 to 570
Tensile Strength: Ultimate (UTS), MPa 270
690 to 930
Tensile Strength: Yield (Proof), MPa 230
400 to 800

Thermal Properties

Latent Heat of Fusion, J/g 420
250
Maximum Temperature: Mechanical, °C 320
430
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
33
Thermal Expansion, µm/m-K 8.7
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.6
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 7.1
8.5

Otherwise Unclassified Properties

Base Metal Price, % relative 37
3.0
Density, g/cm3 4.5
7.8
Embodied Carbon, kg CO2/kg material 33
2.3
Embodied Energy, MJ/kg 530
32
Embodied Water, L/kg 320
54

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 70
130 to 140
Resilience: Unit (Modulus of Resilience), kJ/m3 240
430 to 1690
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
24
Strength to Weight: Axial, points 17
24 to 33
Strength to Weight: Bending, points 21
22 to 27
Thermal Diffusivity, mm2/s 8.8
8.9
Thermal Shock Resistance, points 21
24 to 32

Alloy Composition

Aluminum (Al), % 0
0 to 0.015
Carbon (C), % 0 to 0.080
0.36 to 0.44
Chromium (Cr), % 0
0.9 to 1.2
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.2
96 to 97.5
Manganese (Mn), % 0
0.45 to 0.85
Molybdenum (Mo), % 0
0.5 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 0.030
Titanium (Ti), % 99 to 99.92
0
Vanadium (V), % 0
0.25 to 0.35
Residuals, % 0 to 0.4
0