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Titanium 6-5-0.5 vs. SAE-AISI 4118 Steel

Titanium 6-5-0.5 belongs to the titanium alloys classification, while SAE-AISI 4118 steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is titanium 6-5-0.5 and the bottom bar is SAE-AISI 4118 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
190
Elongation at Break, % 6.7
23
Fatigue Strength, MPa 530
230
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 40
73
Shear Strength, MPa 630
320
Tensile Strength: Ultimate (UTS), MPa 1080
500
Tensile Strength: Yield (Proof), MPa 990
320

Thermal Properties

Latent Heat of Fusion, J/g 410
250
Maximum Temperature: Mechanical, °C 300
410
Melting Completion (Liquidus), °C 1610
1460
Melting Onset (Solidus), °C 1560
1420
Specific Heat Capacity, J/kg-K 550
470
Thermal Conductivity, W/m-K 4.2
46
Thermal Expansion, µm/m-K 9.4
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.0
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
8.2

Otherwise Unclassified Properties

Base Metal Price, % relative 41
2.3
Density, g/cm3 4.5
7.8
Embodied Carbon, kg CO2/kg material 33
1.5
Embodied Energy, MJ/kg 540
20
Embodied Water, L/kg 180
49

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 71
100
Resilience: Unit (Modulus of Resilience), kJ/m3 4630
280
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
24
Strength to Weight: Axial, points 67
18
Strength to Weight: Bending, points 52
18
Thermal Diffusivity, mm2/s 1.7
13
Thermal Shock Resistance, points 79
15

Alloy Composition


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Aluminum (Al), % 5.7 to 6.3
0
Carbon (C), % 0 to 0.080
0.18 to 0.23
Chromium (Cr), % 0
0.4 to 0.6
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.2
97.5 to 98.4
Manganese (Mn), % 0
0.7 to 0.9
Molybdenum (Mo), % 0.25 to 0.75
0.2 to 0.3
Nitrogen (N), % 0 to 0.050
0
Oxygen (O), % 0 to 0.19
0
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0 to 0.4
0.15 to 0.35
Sulfur (S), % 0
0 to 0.040
Titanium (Ti), % 85.6 to 90.1
0
Zirconium (Zr), % 4.0 to 6.0
0
Residuals, % 0 to 0.4
0