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SAE-AISI 1018 Steel vs. Titanium 6-2-4-2

SAE-AISI 1018 steel belongs to the iron alloys classification, while titanium 6-2-4-2 belongs to the titanium alloys. There are 31 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 1018 steel and the bottom bar is titanium 6-2-4-2.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
110
Elongation at Break, % 17 to 27
8.6
Fatigue Strength, MPa 180 to 270
490
Poisson's Ratio 0.29
0.32
Reduction in Area, % 45 to 57
21
Shear Modulus, GPa 73
40
Shear Strength, MPa 280 to 300
560
Tensile Strength: Ultimate (UTS), MPa 430 to 480
950
Tensile Strength: Yield (Proof), MPa 240 to 400
880

Thermal Properties

Latent Heat of Fusion, J/g 250
400
Maximum Temperature: Mechanical, °C 400
300
Melting Completion (Liquidus), °C 1460
1590
Melting Onset (Solidus), °C 1420
1540
Specific Heat Capacity, J/kg-K 470
540
Thermal Conductivity, W/m-K 52
6.9
Thermal Expansion, µm/m-K 12
9.5

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.0
0.9
Electrical Conductivity: Equal Weight (Specific), % IACS 8.0
1.8

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
42
Density, g/cm3 7.9
4.6
Embodied Carbon, kg CO2/kg material 1.4
32
Embodied Energy, MJ/kg 18
520
Embodied Water, L/kg 46
210

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 75 to 100
79
Resilience: Unit (Modulus of Resilience), kJ/m3 150 to 430
3640
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
34
Strength to Weight: Axial, points 15 to 17
57
Strength to Weight: Bending, points 16 to 17
46
Thermal Diffusivity, mm2/s 14
2.8
Thermal Shock Resistance, points 14 to 15
67

Alloy Composition

Aluminum (Al), % 0
5.5 to 6.5
Carbon (C), % 0.15 to 0.2
0 to 0.050
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 98.8 to 99.25
0 to 0.25
Manganese (Mn), % 0.6 to 0.9
0
Molybdenum (Mo), % 0
1.8 to 2.2
Nitrogen (N), % 0
0 to 0.050
Oxygen (O), % 0
0 to 0.15
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0
0.060 to 0.12
Sulfur (S), % 0 to 0.050
0
Tin (Sn), % 0
1.8 to 2.2
Titanium (Ti), % 0
83.7 to 87.2
Zirconium (Zr), % 0
3.6 to 4.4
Residuals, % 0
0 to 0.4