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Annealed SAE-AISI O7 vs. Annealed Titanium 6-6-2

Annealed SAE-AISI O7 belongs to the iron alloys classification, while annealed titanium 6-6-2 belongs to the titanium alloys. There are 29 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is annealed SAE-AISI O7 and the bottom bar is annealed titanium 6-6-2.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
120
Elongation at Break, % 21
9.0
Fatigue Strength, MPa 290
590
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 73
44
Shear Strength, MPa 430
670
Tensile Strength: Ultimate (UTS), MPa 680
1140
Tensile Strength: Yield (Proof), MPa 410
1040

Thermal Properties

Latent Heat of Fusion, J/g 250
400
Melting Completion (Liquidus), °C 1480
1610
Melting Onset (Solidus), °C 1430
1560
Specific Heat Capacity, J/kg-K 470
540
Thermal Conductivity, W/m-K 41
5.5
Thermal Expansion, µm/m-K 12
9.4

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
1.1
Electrical Conductivity: Equal Weight (Specific), % IACS 8.7
2.1

Otherwise Unclassified Properties

Base Metal Price, % relative 6.0
40
Density, g/cm3 7.9
4.8
Embodied Carbon, kg CO2/kg material 2.3
29
Embodied Energy, MJ/kg 33
470
Embodied Water, L/kg 52
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
99
Resilience: Unit (Modulus of Resilience), kJ/m3 450
4710
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
34
Strength to Weight: Axial, points 24
66
Strength to Weight: Bending, points 22
50
Thermal Diffusivity, mm2/s 11
2.1
Thermal Shock Resistance, points 23
75

Alloy Composition

Aluminum (Al), % 0
5.0 to 6.0
Carbon (C), % 1.1 to 1.3
0 to 0.050
Chromium (Cr), % 0.35 to 0.85
0
Copper (Cu), % 0 to 0.25
0.35 to 1.0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 92.9 to 97.6
0.35 to 1.0
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 0 to 0.3
5.0 to 6.0
Nickel (Ni), % 0 to 0.3
0
Nitrogen (N), % 0
0 to 0.040
Oxygen (O), % 0
0 to 0.2
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0 to 0.6
0
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
1.5 to 2.5
Titanium (Ti), % 0
82.8 to 87.8
Tungsten (W), % 1.0 to 2.0
0
Vanadium (V), % 0 to 0.4
0
Residuals, % 0
0 to 0.4