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EN 1.6554 Steel vs. Titanium 6-6-2

EN 1.6554 steel belongs to the iron alloys classification, while titanium 6-6-2 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 1.6554 steel and the bottom bar is titanium 6-6-2.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
120
Elongation at Break, % 17 to 21
6.7 to 9.0
Fatigue Strength, MPa 380 to 520
590 to 670
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 73
44
Tensile Strength: Ultimate (UTS), MPa 780 to 930
1140 to 1370
Tensile Strength: Yield (Proof), MPa 550 to 790
1040 to 1230

Thermal Properties

Latent Heat of Fusion, J/g 250
400
Maximum Temperature: Mechanical, °C 420
310
Melting Completion (Liquidus), °C 1460
1610
Melting Onset (Solidus), °C 1420
1560
Specific Heat Capacity, J/kg-K 470
540
Thermal Conductivity, W/m-K 40
5.5
Thermal Expansion, µm/m-K 13
9.4

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
1.1
Electrical Conductivity: Equal Weight (Specific), % IACS 8.7
2.1

Otherwise Unclassified Properties

Base Metal Price, % relative 3.4
40
Density, g/cm3 7.9
4.8
Embodied Carbon, kg CO2/kg material 1.7
29
Embodied Energy, MJ/kg 22
470
Embodied Water, L/kg 53
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 150
89 to 99
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
34
Strength to Weight: Axial, points 27 to 33
66 to 79
Strength to Weight: Bending, points 24 to 27
50 to 57
Thermal Diffusivity, mm2/s 11
2.1
Thermal Shock Resistance, points 23 to 27
75 to 90

Alloy Composition


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Aluminum (Al), % 0
5.0 to 6.0
Carbon (C), % 0.23 to 0.28
0 to 0.050
Chromium (Cr), % 0.7 to 0.9
0
Copper (Cu), % 0 to 0.3
0.35 to 1.0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 94.6 to 97.3
0.35 to 1.0
Manganese (Mn), % 0.6 to 0.9
0
Molybdenum (Mo), % 0.2 to 0.3
5.0 to 6.0
Nickel (Ni), % 1.0 to 2.0
0
Nitrogen (N), % 0
0 to 0.040
Oxygen (O), % 0
0 to 0.2
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0 to 0.6
0
Sulfur (S), % 0 to 0.025
0
Tin (Sn), % 0
1.5 to 2.5
Titanium (Ti), % 0
82.8 to 87.8
Vanadium (V), % 0 to 0.030
0
Residuals, % 0
0 to 0.4

Comparable Variants