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Grade 2 Titanium vs. EN 1.7108 Steel

Grade 2 titanium belongs to the titanium alloys classification, while EN 1.7108 steel belongs to the iron alloys. There are 25 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is grade 2 titanium and the bottom bar is EN 1.7108 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
200 to 510
Elastic (Young's, Tensile) Modulus, GPa 110
190
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 38
72
Tensile Strength: Ultimate (UTS), MPa 420
670 to 2070

Thermal Properties

Latent Heat of Fusion, J/g 420
280
Maximum Temperature: Mechanical, °C 320
410
Melting Completion (Liquidus), °C 1660
1430
Melting Onset (Solidus), °C 1610
1390
Specific Heat Capacity, J/kg-K 540
480
Thermal Conductivity, W/m-K 22
46
Thermal Expansion, µm/m-K 9.0
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.6
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 7.2
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 37
2.1
Density, g/cm3 4.5
7.7
Embodied Carbon, kg CO2/kg material 31
1.5
Embodied Energy, MJ/kg 510
20
Embodied Water, L/kg 110
47

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 26
24 to 75
Strength to Weight: Bending, points 28
22 to 47
Thermal Diffusivity, mm2/s 8.9
12
Thermal Shock Resistance, points 32
20 to 63

Alloy Composition

Carbon (C), % 0 to 0.080
0.57 to 0.65
Chromium (Cr), % 0
0.2 to 0.45
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.3
95.9 to 96.9
Manganese (Mn), % 0
0.7 to 1.0
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.25
0
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0
1.6 to 2.0
Sulfur (S), % 0
0 to 0.025
Titanium (Ti), % 98.9 to 100
0
Residuals, % 0 to 0.4
0