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EN 1.8151 Steel vs. Grade 5 Titanium

EN 1.8151 steel belongs to the iron alloys classification, while grade 5 titanium belongs to the titanium alloys. There are 24 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is EN 1.8151 steel and the bottom bar is grade 5 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 72
40
Tensile Strength: Ultimate (UTS), MPa 670 to 1940
1000 to 1190

Thermal Properties

Latent Heat of Fusion, J/g 270
410
Maximum Temperature: Mechanical, °C 410
330
Melting Completion (Liquidus), °C 1440
1610
Melting Onset (Solidus), °C 1400
1650
Specific Heat Capacity, J/kg-K 480
560
Thermal Conductivity, W/m-K 50
6.8
Thermal Expansion, µm/m-K 13
8.9

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
1.0
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 2.2
36
Density, g/cm3 7.7
4.4
Embodied Carbon, kg CO2/kg material 1.8
38
Embodied Energy, MJ/kg 25
610
Embodied Water, L/kg 49
200

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 25
35
Strength to Weight: Axial, points 24 to 70
62 to 75
Strength to Weight: Bending, points 22 to 45
50 to 56
Thermal Diffusivity, mm2/s 14
2.7
Thermal Shock Resistance, points 20 to 58
76 to 91

Alloy Composition


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Aluminum (Al), % 0
5.5 to 6.8
Carbon (C), % 0.4 to 0.5
0 to 0.080
Chromium (Cr), % 0.4 to 0.8
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 95.9 to 97.2
0 to 0.4
Manganese (Mn), % 0.6 to 0.9
0
Nitrogen (N), % 0
0 to 0.050
Oxygen (O), % 0
0 to 0.2
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 1.3 to 1.7
0
Sulfur (S), % 0 to 0.025
0
Titanium (Ti), % 0
87.4 to 91
Vanadium (V), % 0.1 to 0.2
3.5 to 4.5
Yttrium (Y), % 0
0 to 0.0050
Residuals, % 0
0 to 0.4

Comparable Variants