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EN 1.7139 Steel vs. Grade 20 Titanium

EN 1.7139 steel belongs to the iron alloys classification, while grade 20 titanium belongs to the titanium alloys. There are 19 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

For each property being compared, the top bar is EN 1.7139 steel and the bottom bar is grade 20 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
120
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 73
47
Tensile Strength: Ultimate (UTS), MPa 480 to 1390
900 to 1270

Thermal Properties

Latent Heat of Fusion, J/g 250
400
Maximum Temperature: Mechanical, °C 420
370
Melting Completion (Liquidus), °C 1460
1660
Melting Onset (Solidus), °C 1420
1600
Specific Heat Capacity, J/kg-K 470
520
Thermal Expansion, µm/m-K 13
9.6

Otherwise Unclassified Properties

Density, g/cm3 7.8
5.0
Embodied Carbon, kg CO2/kg material 1.4
52
Embodied Energy, MJ/kg 19
860
Embodied Water, L/kg 51
350

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
33
Strength to Weight: Axial, points 17 to 49
50 to 70
Strength to Weight: Bending, points 17 to 35
41 to 52
Thermal Shock Resistance, points 14 to 41
55 to 77

Alloy Composition

Aluminum (Al), % 0
3.0 to 4.0
Carbon (C), % 0.14 to 0.19
0 to 0.050
Chromium (Cr), % 0.8 to 1.1
5.5 to 6.5
Copper (Cu), % 0 to 0.25
0
Hydrogen (H), % 0
0 to 0.020
Iron (Fe), % 96.8 to 98
0 to 0.3
Manganese (Mn), % 1.0 to 1.3
0
Molybdenum (Mo), % 0
3.5 to 4.5
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.12
Palladium (Pd), % 0
0.040 to 0.080
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 0 to 0.3
0
Sulfur (S), % 0.020 to 0.040
0
Titanium (Ti), % 0
71 to 77
Vanadium (V), % 0
7.5 to 8.5
Zirconium (Zr), % 0
3.5 to 4.5
Residuals, % 0
0 to 0.4

Comparable Variants