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EN 1.7379 Steel vs. Grade 27 Titanium

EN 1.7379 steel belongs to the iron alloys classification, while grade 27 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 1.7379 steel and the bottom bar is grade 27 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
110
Elongation at Break, % 21
27
Fatigue Strength, MPa 320
170
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 74
41
Tensile Strength: Ultimate (UTS), MPa 670
270
Tensile Strength: Yield (Proof), MPa 460
230

Thermal Properties

Latent Heat of Fusion, J/g 260
420
Maximum Temperature: Mechanical, °C 460
320
Melting Completion (Liquidus), °C 1470
1660
Melting Onset (Solidus), °C 1420
1610
Specific Heat Capacity, J/kg-K 470
540
Thermal Conductivity, W/m-K 39
21
Thermal Expansion, µm/m-K 13
8.7

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
3.6
Electrical Conductivity: Equal Weight (Specific), % IACS 8.8
7.1

Otherwise Unclassified Properties

Base Metal Price, % relative 3.8
37
Density, g/cm3 7.8
4.5
Embodied Carbon, kg CO2/kg material 1.8
33
Embodied Energy, MJ/kg 23
530
Embodied Water, L/kg 59
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
70
Resilience: Unit (Modulus of Resilience), kJ/m3 550
240
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
35
Strength to Weight: Axial, points 24
17
Strength to Weight: Bending, points 22
21
Thermal Diffusivity, mm2/s 11
8.8
Thermal Shock Resistance, points 19
21

Alloy Composition

Carbon (C), % 0.13 to 0.2
0 to 0.080
Chromium (Cr), % 2.0 to 2.5
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 94.5 to 96.5
0 to 0.2
Manganese (Mn), % 0.5 to 0.9
0
Molybdenum (Mo), % 0.9 to 1.2
0
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.18
Phosphorus (P), % 0 to 0.025
0
Ruthenium (Ru), % 0
0.080 to 0.14
Silicon (Si), % 0 to 0.6
0
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
99 to 99.92
Residuals, % 0
0 to 0.4