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EN 1.5507 Steel vs. Grade 21 Titanium

EN 1.5507 steel belongs to the iron alloys classification, while grade 21 titanium belongs to the titanium alloys. There are 23 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is EN 1.5507 steel and the bottom bar is grade 21 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
140
Poisson's Ratio 0.29
0.32
Reduction in Area, % 58 to 72
22
Shear Modulus, GPa 73
51
Tensile Strength: Ultimate (UTS), MPa 450 to 880
890 to 1340

Thermal Properties

Latent Heat of Fusion, J/g 250
410
Maximum Temperature: Mechanical, °C 410
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 49
7.5
Thermal Expansion, µm/m-K 13
7.1

Otherwise Unclassified Properties

Base Metal Price, % relative 2.0
60
Density, g/cm3 7.8
5.4
Embodied Carbon, kg CO2/kg material 1.4
32
Embodied Energy, MJ/kg 19
490
Embodied Water, L/kg 49
180

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
32
Strength to Weight: Axial, points 16 to 31
46 to 69
Strength to Weight: Bending, points 17 to 26
38 to 50
Thermal Diffusivity, mm2/s 13
2.8
Thermal Shock Resistance, points 13 to 26
66 to 100

Alloy Composition

Aluminum (Al), % 0.020 to 0.080
2.5 to 3.5
Boron (B), % 0.00080 to 0.0050
0
Carbon (C), % 0.21 to 0.25
0 to 0.050
Chromium (Cr), % 0.25 to 0.35
0
Copper (Cu), % 0 to 0.25
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 97.8 to 98.7
0 to 0.4
Manganese (Mn), % 0.8 to 1.0
0
Molybdenum (Mo), % 0
14 to 16
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 0.015
0
Silicon (Si), % 0 to 0.15
0.15 to 0.25
Sulfur (S), % 0 to 0.015
0
Titanium (Ti), % 0 to 0.060
76 to 81.2
Residuals, % 0
0 to 0.4

Comparable Variants