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EN 1.3555 Steel vs. Grade 20 Titanium

EN 1.3555 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 (12, in this case) are not shown.

For each property being compared, the top bar is EN 1.3555 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 75
47
Tensile Strength: Ultimate (UTS), MPa 770
900 to 1270

Thermal Properties

Latent Heat of Fusion, J/g 260
400
Maximum Temperature: Mechanical, °C 540
370
Melting Completion (Liquidus), °C 1500
1660
Melting Onset (Solidus), °C 1450
1600
Specific Heat Capacity, J/kg-K 460
520
Thermal Expansion, µm/m-K 13
9.6

Otherwise Unclassified Properties

Density, g/cm3 7.9
5.0
Embodied Carbon, kg CO2/kg material 5.6
52
Embodied Energy, MJ/kg 81
860
Embodied Water, L/kg 90
350

Common Calculations

Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
33
Strength to Weight: Axial, points 27
50 to 70
Strength to Weight: Bending, points 23
41 to 52
Thermal Shock Resistance, points 22
55 to 77

Alloy Composition

Aluminum (Al), % 0
3.0 to 4.0
Carbon (C), % 0.1 to 0.15
0 to 0.050
Chromium (Cr), % 3.9 to 4.3
5.5 to 6.5
Copper (Cu), % 0 to 0.1
0
Hydrogen (H), % 0
0 to 0.020
Iron (Fe), % 85.4 to 87.7
0 to 0.3
Manganese (Mn), % 0.15 to 0.35
0
Molybdenum (Mo), % 4.0 to 4.5
3.5 to 4.5
Nickel (Ni), % 3.2 to 3.6
0
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 0.015
0
Silicon (Si), % 0.1 to 0.25
0
Sulfur (S), % 0 to 0.010
0
Titanium (Ti), % 0
71 to 77
Tungsten (W), % 0 to 0.15
0
Vanadium (V), % 1.0 to 1.3
7.5 to 8.5
Zirconium (Zr), % 0
3.5 to 4.5
Residuals, % 0
0 to 0.4