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EN 1.7231 Steel vs. Grade 24 Titanium

EN 1.7231 steel belongs to the iron alloys classification, while grade 24 titanium belongs to the titanium alloys. There are 28 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is EN 1.7231 steel and the bottom bar is grade 24 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
110
Elongation at Break, % 11 to 12
11
Fatigue Strength, MPa 360 to 500
550
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 73
40
Tensile Strength: Ultimate (UTS), MPa 790 to 930
1010
Tensile Strength: Yield (Proof), MPa 570 to 800
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 1420
1560
Specific Heat Capacity, J/kg-K 470
560
Thermal Conductivity, W/m-K 46
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

Density, g/cm3 7.8
4.5
Embodied Carbon, kg CO2/kg material 1.5
43
Embodied Energy, MJ/kg 20
710
Embodied Water, L/kg 51
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 87 to 100
110
Resilience: Unit (Modulus of Resilience), kJ/m3 870 to 1700
4160
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
35
Strength to Weight: Axial, points 28 to 33
63
Strength to Weight: Bending, points 24 to 27
50
Thermal Diffusivity, mm2/s 12
2.9
Thermal Shock Resistance, points 23 to 27
72

Alloy Composition

Aluminum (Al), % 0
5.5 to 6.8
Carbon (C), % 0.38 to 0.45
0 to 0.080
Chromium (Cr), % 0.8 to 1.2
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 96.4 to 98.1
0 to 0.4
Manganese (Mn), % 0.6 to 1.0
0
Molybdenum (Mo), % 0.15 to 0.3
0
Nitrogen (N), % 0
0 to 0.050
Oxygen (O), % 0
0 to 0.2
Palladium (Pd), % 0
0.040 to 0.080
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 0 to 0.6
0
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
87.5 to 91
Vanadium (V), % 0
3.5 to 4.5
Residuals, % 0
0 to 0.4