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Grade 27 Titanium vs. EN 1.1221 Steel

Grade 27 titanium belongs to the titanium alloys classification, while EN 1.1221 steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is grade 27 titanium and the bottom bar is EN 1.1221 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 27
10 to 21
Fatigue Strength, MPa 170
240 to 340
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 41
72
Shear Strength, MPa 180
450 to 520
Tensile Strength: Ultimate (UTS), MPa 270
730 to 870
Tensile Strength: Yield (Proof), MPa 230
390 to 550

Thermal Properties

Latent Heat of Fusion, J/g 420
250
Maximum Temperature: Mechanical, °C 320
400
Melting Completion (Liquidus), °C 1660
1460
Melting Onset (Solidus), °C 1610
1410
Specific Heat Capacity, J/kg-K 540
470
Thermal Conductivity, W/m-K 21
48
Thermal Expansion, µm/m-K 8.7
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.6
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 7.1
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 37
2.1
Density, g/cm3 4.5
7.8
Embodied Carbon, kg CO2/kg material 33
1.5
Embodied Energy, MJ/kg 530
19
Embodied Water, L/kg 320
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 70
67 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 240
410 to 800
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
24
Strength to Weight: Axial, points 17
26 to 31
Strength to Weight: Bending, points 21
23 to 26
Thermal Diffusivity, mm2/s 8.8
13
Thermal Shock Resistance, points 21
23 to 28

Alloy Composition

Carbon (C), % 0 to 0.080
0.57 to 0.65
Chromium (Cr), % 0
0 to 0.4
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.2
97.1 to 98.8
Manganese (Mn), % 0
0.6 to 0.9
Molybdenum (Mo), % 0
0 to 0.1
Nickel (Ni), % 0
0 to 0.4
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.18
0
Phosphorus (P), % 0
0 to 0.035
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