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EN 1.7139 Steel vs. Titanium 15-3-3-3

EN 1.7139 steel belongs to the iron alloys classification, while titanium 15-3-3-3 belongs to the titanium alloys. There are 24 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is EN 1.7139 steel and the bottom bar is titanium 15-3-3-3.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
100
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 73
39
Tensile Strength: Ultimate (UTS), MPa 480 to 1390
1120 to 1390

Thermal Properties

Latent Heat of Fusion, J/g 250
390
Maximum Temperature: Mechanical, °C 420
430
Melting Completion (Liquidus), °C 1460
1620
Melting Onset (Solidus), °C 1420
1560
Specific Heat Capacity, J/kg-K 470
520
Thermal Conductivity, W/m-K 44
8.1
Thermal Expansion, µm/m-K 13
9.8

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
1.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 2.2
40
Density, g/cm3 7.8
4.8
Embodied Carbon, kg CO2/kg material 1.4
59
Embodied Energy, MJ/kg 19
950
Embodied Water, L/kg 51
260

Common Calculations

Stiffness to Weight: Axial, points 13
12
Stiffness to Weight: Bending, points 24
32
Strength to Weight: Axial, points 17 to 49
64 to 80
Strength to Weight: Bending, points 17 to 35
50 to 57
Thermal Diffusivity, mm2/s 12
3.2
Thermal Shock Resistance, points 14 to 41
79 to 98

Alloy Composition

Aluminum (Al), % 0
2.5 to 3.5
Carbon (C), % 0.14 to 0.19
0 to 0.050
Chromium (Cr), % 0.8 to 1.1
2.5 to 3.5
Copper (Cu), % 0 to 0.25
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 96.8 to 98
0 to 0.25
Manganese (Mn), % 1.0 to 1.3
0
Nitrogen (N), % 0
0 to 0.050
Oxygen (O), % 0
0 to 0.13
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 0 to 0.3
0
Sulfur (S), % 0.020 to 0.040
0
Tin (Sn), % 0
2.5 to 3.5
Titanium (Ti), % 0
72.6 to 78.5
Vanadium (V), % 0
14 to 16
Residuals, % 0
0 to 0.4