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EN 1.6554 Steel vs. Grade 27 Titanium

EN 1.6554 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 (4, in this case) are not shown.

For each property being compared, the top bar is EN 1.6554 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, % 17 to 21
27
Fatigue Strength, MPa 380 to 520
170
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 73
41
Tensile Strength: Ultimate (UTS), MPa 780 to 930
270
Tensile Strength: Yield (Proof), MPa 550 to 790
230

Thermal Properties

Latent Heat of Fusion, J/g 250
420
Maximum Temperature: Mechanical, °C 420
320
Melting Completion (Liquidus), °C 1460
1660
Melting Onset (Solidus), °C 1420
1610
Specific Heat Capacity, J/kg-K 470
540
Thermal Conductivity, W/m-K 40
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 8.7
7.1

Otherwise Unclassified Properties

Base Metal Price, % relative 3.4
37
Density, g/cm3 7.9
4.5
Embodied Carbon, kg CO2/kg material 1.7
33
Embodied Energy, MJ/kg 22
530
Embodied Water, L/kg 53
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 150
70
Resilience: Unit (Modulus of Resilience), kJ/m3 810 to 1650
240
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
35
Strength to Weight: Axial, points 27 to 33
17
Strength to Weight: Bending, points 24 to 27
21
Thermal Diffusivity, mm2/s 11
8.8
Thermal Shock Resistance, points 23 to 27
21

Alloy Composition


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Carbon (C), % 0.23 to 0.28
0 to 0.080
Chromium (Cr), % 0.7 to 0.9
0
Copper (Cu), % 0 to 0.3
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 94.6 to 97.3
0 to 0.2
Manganese (Mn), % 0.6 to 0.9
0
Molybdenum (Mo), % 0.2 to 0.3
0
Nickel (Ni), % 1.0 to 2.0
0
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.18
Phosphorus (P), % 0 to 0.030
0
Ruthenium (Ru), % 0
0.080 to 0.14
Silicon (Si), % 0 to 0.6
0
Sulfur (S), % 0 to 0.025
0
Titanium (Ti), % 0
99 to 99.92
Vanadium (V), % 0 to 0.030
0
Residuals, % 0
0 to 0.4