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EN 1.6579 Steel vs. Titanium 6-7

EN 1.6579 steel belongs to the iron alloys classification, while titanium 6-7 belongs to the titanium alloys. There are 25 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 1.6579 steel and the bottom bar is titanium 6-7.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
120
Elongation at Break, % 11 to 14
11
Fatigue Strength, MPa 380 to 570
530
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 73
45
Tensile Strength: Ultimate (UTS), MPa 850 to 980
1020
Tensile Strength: Yield (Proof), MPa 600 to 910
900

Thermal Properties

Latent Heat of Fusion, J/g 250
410
Maximum Temperature: Mechanical, °C 440
300
Melting Completion (Liquidus), °C 1460
1700
Melting Onset (Solidus), °C 1410
1650
Specific Heat Capacity, J/kg-K 470
520
Thermal Expansion, µm/m-K 13
9.3

Otherwise Unclassified Properties

Base Metal Price, % relative 3.7
75
Density, g/cm3 7.8
5.1
Embodied Carbon, kg CO2/kg material 1.7
34
Embodied Energy, MJ/kg 22
540
Embodied Water, L/kg 56
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 100 to 120
110
Resilience: Unit (Modulus of Resilience), kJ/m3 950 to 2210
3460
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
32
Strength to Weight: Axial, points 30 to 35
56
Strength to Weight: Bending, points 25 to 28
44
Thermal Shock Resistance, points 25 to 29
66

Alloy Composition

Aluminum (Al), % 0
5.5 to 6.5
Carbon (C), % 0.32 to 0.38
0 to 0.080
Chromium (Cr), % 1.4 to 1.7
0
Hydrogen (H), % 0
0 to 0.0090
Iron (Fe), % 94.2 to 96.1
0 to 0.25
Manganese (Mn), % 0.6 to 1.0
0
Molybdenum (Mo), % 0.15 to 0.35
6.5 to 7.5
Nickel (Ni), % 1.4 to 1.7
0
Niobium (Nb), % 0
6.5 to 7.5
Nitrogen (N), % 0
0 to 0.050
Oxygen (O), % 0
0 to 0.2
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 0 to 0.6
0
Sulfur (S), % 0 to 0.030
0
Tantalum (Ta), % 0
0 to 0.5
Titanium (Ti), % 0
84.9 to 88