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EN 1.6554 Steel vs. Grade 21 Titanium

EN 1.6554 steel belongs to the iron alloys classification, while grade 21 titanium belongs to the titanium alloys. There are 27 material properties with values for both materials. Properties with values for just one material (6, 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 21 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
140
Elongation at Break, % 17 to 21
9.0 to 17
Fatigue Strength, MPa 380 to 520
550 to 660
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 73
51
Tensile Strength: Ultimate (UTS), MPa 780 to 930
890 to 1340
Tensile Strength: Yield (Proof), MPa 550 to 790
870 to 1170

Thermal Properties

Latent Heat of Fusion, J/g 250
410
Maximum Temperature: Mechanical, °C 420
310
Melting Completion (Liquidus), °C 1460
1740
Melting Onset (Solidus), °C 1420
1690
Specific Heat Capacity, J/kg-K 470
500
Thermal Conductivity, W/m-K 40
7.5
Thermal Expansion, µm/m-K 13
7.1

Otherwise Unclassified Properties

Base Metal Price, % relative 3.4
60
Density, g/cm3 7.9
5.4
Embodied Carbon, kg CO2/kg material 1.7
32
Embodied Energy, MJ/kg 22
490
Embodied Water, L/kg 53
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 150
110 to 180
Resilience: Unit (Modulus of Resilience), kJ/m3 810 to 1650
2760 to 5010
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
32
Strength to Weight: Axial, points 27 to 33
46 to 69
Strength to Weight: Bending, points 24 to 27
38 to 50
Thermal Diffusivity, mm2/s 11
2.8
Thermal Shock Resistance, points 23 to 27
66 to 100

Alloy Composition


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Aluminum (Al), % 0
2.5 to 3.5
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
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 94.6 to 97.3
0 to 0.4
Manganese (Mn), % 0.6 to 0.9
0
Molybdenum (Mo), % 0.2 to 0.3
14 to 16
Nickel (Ni), % 1.0 to 2.0
0
Niobium (Nb), % 0
2.2 to 3.2
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.17
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0 to 0.6
0.15 to 0.25
Sulfur (S), % 0 to 0.025
0
Titanium (Ti), % 0
76 to 81.2
Vanadium (V), % 0 to 0.030
0
Residuals, % 0
0 to 0.4

Comparable Variants