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Grade 27 Titanium vs. ASTM F15 Fe-Ni-Co

Grade 27 titanium belongs to the titanium alloys classification, while ASTM F15 Fe-Ni-Co belongs to the iron alloys. There are 23 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is grade 27 titanium and the bottom bar is ASTM F15 Fe-Ni-Co.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
190
Poisson's Ratio 0.32
0.3
Shear Modulus, GPa 41
73
Tensile Strength: Ultimate (UTS), MPa 270
520 to 880

Thermal Properties

Latent Heat of Fusion, J/g 420
270
Melting Completion (Liquidus), °C 1660
1410
Melting Onset (Solidus), °C 1610
1450
Specific Heat Capacity, J/kg-K 540
460
Thermal Conductivity, W/m-K 21
17
Thermal Expansion, µm/m-K 8.7
6.0

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.6
3.7
Electrical Conductivity: Equal Weight (Specific), % IACS 7.1
4.0

Otherwise Unclassified Properties

Base Metal Price, % relative 37
49
Density, g/cm3 4.5
8.3
Embodied Carbon, kg CO2/kg material 33
5.2
Embodied Energy, MJ/kg 530
71
Embodied Water, L/kg 320
190

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
23
Strength to Weight: Axial, points 17
17 to 29
Strength to Weight: Bending, points 21
17 to 24
Thermal Diffusivity, mm2/s 8.8
4.5
Thermal Shock Resistance, points 21
32 to 55

Alloy Composition

Aluminum (Al), % 0
0 to 0.1
Carbon (C), % 0 to 0.080
0 to 0.040
Chromium (Cr), % 0
0 to 0.2
Cobalt (Co), % 0
16 to 18
Copper (Cu), % 0
0 to 0.2
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.2
50.3 to 56
Magnesium (Mg), % 0
0 to 0.1
Manganese (Mn), % 0
0 to 0.5
Molybdenum (Mo), % 0
0 to 0.2
Nickel (Ni), % 0
28 to 30
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.18
0
Ruthenium (Ru), % 0.080 to 0.14
0
Silicon (Si), % 0
0 to 0.2
Titanium (Ti), % 99 to 99.92
0 to 0.1
Zirconium (Zr), % 0
0 to 0.1
Residuals, % 0 to 0.4
0