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EN 1.7239 Steel vs. R56401 Titanium

EN 1.7239 steel belongs to the iron alloys classification, while R56401 titanium belongs to the titanium alloys. There are 24 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 EN 1.7239 steel and the bottom bar is R56401 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
110
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 73
40
Tensile Strength: Ultimate (UTS), MPa 660 to 1990
940

Thermal Properties

Latent Heat of Fusion, J/g 250
410
Maximum Temperature: Mechanical, °C 420
340
Melting Completion (Liquidus), °C 1460
1610
Melting Onset (Solidus), °C 1410
1560
Specific Heat Capacity, J/kg-K 470
560
Thermal Conductivity, W/m-K 44
7.1
Thermal Expansion, µm/m-K 13
9.6

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
1.0
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 2.3
36
Density, g/cm3 7.8
4.5
Embodied Carbon, kg CO2/kg material 1.5
38
Embodied Energy, MJ/kg 20
610
Embodied Water, L/kg 50
200

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
35
Strength to Weight: Axial, points 23 to 71
59
Strength to Weight: Bending, points 21 to 45
48
Thermal Diffusivity, mm2/s 12
2.9
Thermal Shock Resistance, points 19 to 59
67

Alloy Composition

Aluminum (Al), % 0
5.5 to 6.5
Carbon (C), % 0.56 to 0.64
0 to 0.080
Chromium (Cr), % 0.7 to 1.0
0
Hydrogen (H), % 0
0 to 0.012
Iron (Fe), % 96.8 to 98
0 to 0.25
Manganese (Mn), % 0.7 to 1.0
0
Molybdenum (Mo), % 0.060 to 0.15
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 0.4
0
Sulfur (S), % 0 to 0.025
0
Titanium (Ti), % 0
88.5 to 91
Vanadium (V), % 0
3.5 to 4.5