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Grade 5 Titanium vs. EN 1.7709 Steel

Grade 5 titanium belongs to the titanium alloys classification, while EN 1.7709 steel belongs to the iron alloys. There are 24 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is grade 5 titanium and the bottom bar is EN 1.7709 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
190
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 40
73
Tensile Strength: Ultimate (UTS), MPa 1000 to 1190
650 to 780

Thermal Properties

Latent Heat of Fusion, J/g 410
250
Maximum Temperature: Mechanical, °C 330
440
Melting Completion (Liquidus), °C 1610
1470
Melting Onset (Solidus), °C 1650
1420
Specific Heat Capacity, J/kg-K 560
470
Thermal Conductivity, W/m-K 6.8
33
Thermal Expansion, µm/m-K 8.9
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.0
7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 36
3.4
Density, g/cm3 4.4
7.8
Embodied Carbon, kg CO2/kg material 38
2.3
Embodied Energy, MJ/kg 610
32
Embodied Water, L/kg 200
56

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
24
Strength to Weight: Axial, points 62 to 75
23 to 27
Strength to Weight: Bending, points 50 to 56
21 to 24
Thermal Diffusivity, mm2/s 2.7
8.9
Thermal Shock Resistance, points 76 to 91
22 to 26

Alloy Composition

Aluminum (Al), % 5.5 to 6.8
0 to 0.030
Carbon (C), % 0 to 0.080
0.17 to 0.25
Chromium (Cr), % 0
1.2 to 1.5
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.4
95.2 to 97.5
Manganese (Mn), % 0
0.4 to 0.8
Molybdenum (Mo), % 0
0.55 to 0.8
Nickel (Ni), % 0
0 to 0.6
Nitrogen (N), % 0 to 0.050
0
Oxygen (O), % 0 to 0.2
0
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0
0 to 0.4
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 87.4 to 91
0
Vanadium (V), % 3.5 to 4.5
0.2 to 0.35
Yttrium (Y), % 0 to 0.0050
0
Residuals, % 0 to 0.4
0