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Grade 27 Titanium vs. EN 1.6579 Steel

Grade 27 titanium belongs to the titanium alloys classification, while EN 1.6579 steel belongs to the iron 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 grade 27 titanium and the bottom bar is EN 1.6579 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 27
11 to 14
Fatigue Strength, MPa 170
380 to 570
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 41
73
Tensile Strength: Ultimate (UTS), MPa 270
850 to 980
Tensile Strength: Yield (Proof), MPa 230
600 to 910

Thermal Properties

Latent Heat of Fusion, J/g 420
250
Maximum Temperature: Mechanical, °C 320
440
Melting Completion (Liquidus), °C 1660
1460
Melting Onset (Solidus), °C 1610
1410
Specific Heat Capacity, J/kg-K 540
470
Thermal Conductivity, W/m-K 21
39
Thermal Expansion, µm/m-K 8.7
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.6
7.7
Electrical Conductivity: Equal Weight (Specific), % IACS 7.1
8.8

Otherwise Unclassified Properties

Base Metal Price, % relative 37
3.7
Density, g/cm3 4.5
7.8
Embodied Carbon, kg CO2/kg material 33
1.7
Embodied Energy, MJ/kg 530
22
Embodied Water, L/kg 320
56

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 70
100 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 240
950 to 2210
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
24
Strength to Weight: Axial, points 17
30 to 35
Strength to Weight: Bending, points 21
25 to 28
Thermal Diffusivity, mm2/s 8.8
11
Thermal Shock Resistance, points 21
25 to 29

Alloy Composition

Carbon (C), % 0 to 0.080
0.32 to 0.38
Chromium (Cr), % 0
1.4 to 1.7
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.2
94.2 to 96.1
Manganese (Mn), % 0
0.6 to 1.0
Molybdenum (Mo), % 0
0.15 to 0.35
Nickel (Ni), % 0
1.4 to 1.7
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.18
0
Phosphorus (P), % 0
0 to 0.025
Ruthenium (Ru), % 0.080 to 0.14
0
Silicon (Si), % 0
0 to 0.6
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 99 to 99.92
0
Residuals, % 0 to 0.4
0