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EN 1.7720 Steel vs. Grade 32 Titanium

EN 1.7720 steel belongs to the iron alloys classification, while grade 32 titanium belongs to the titanium alloys. There are 29 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 1.7720 steel and the bottom bar is grade 32 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
110
Elongation at Break, % 19
11
Fatigue Strength, MPa 230
390
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 73
40
Tensile Strength: Ultimate (UTS), MPa 590
770
Tensile Strength: Yield (Proof), MPa 340
670

Thermal Properties

Latent Heat of Fusion, J/g 250
410
Maximum Temperature: Mechanical, °C 410
310
Melting Completion (Liquidus), °C 1470
1610
Melting Onset (Solidus), °C 1430
1560
Specific Heat Capacity, J/kg-K 470
550
Thermal Conductivity, W/m-K 40
7.5
Thermal Expansion, µm/m-K 13
8.2

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
1.0
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
2.1

Otherwise Unclassified Properties

Base Metal Price, % relative 2.8
38
Density, g/cm3 7.9
4.5
Embodied Carbon, kg CO2/kg material 2.2
32
Embodied Energy, MJ/kg 30
530
Embodied Water, L/kg 51
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 97
83
Resilience: Unit (Modulus of Resilience), kJ/m3 300
2100
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
35
Strength to Weight: Axial, points 21
47
Strength to Weight: Bending, points 20
41
Thermal Diffusivity, mm2/s 11
3.0
Thermal Shock Resistance, points 17
63

Alloy Composition

Aluminum (Al), % 0
4.5 to 5.5
Carbon (C), % 0.1 to 0.15
0 to 0.080
Chromium (Cr), % 0.3 to 0.5
0
Copper (Cu), % 0 to 0.3
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 96.6 to 98.6
0 to 0.25
Manganese (Mn), % 0.4 to 0.7
0
Molybdenum (Mo), % 0.4 to 0.6
0.6 to 1.2
Nickel (Ni), % 0 to 0.4
0
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.11
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0 to 0.45
0.060 to 0.14
Sulfur (S), % 0 to 0.020
0
Tin (Sn), % 0
0.6 to 1.4
Titanium (Ti), % 0
88.1 to 93
Vanadium (V), % 0.22 to 0.3
0.6 to 1.4
Zirconium (Zr), % 0
0.6 to 1.4
Residuals, % 0
0 to 0.4