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SAE-AISI 1023 Steel vs. Titanium 6-7

SAE-AISI 1023 steel belongs to the iron alloys classification, while titanium 6-7 belongs to the titanium alloys. There are 27 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 1023 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, % 17 to 29
11
Fatigue Strength, MPa 180 to 270
530
Poisson's Ratio 0.29
0.33
Reduction in Area, % 46 to 56
29
Shear Modulus, GPa 73
45
Shear Strength, MPa 280 to 300
610
Tensile Strength: Ultimate (UTS), MPa 430 to 480
1020
Tensile Strength: Yield (Proof), MPa 240 to 410
900

Thermal Properties

Latent Heat of Fusion, J/g 250
410
Maximum Temperature: Mechanical, °C 400
300
Melting Completion (Liquidus), °C 1460
1700
Melting Onset (Solidus), °C 1420
1650
Specific Heat Capacity, J/kg-K 470
520
Thermal Expansion, µm/m-K 12
9.3

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
75
Density, g/cm3 7.9
5.1
Embodied Carbon, kg CO2/kg material 1.4
34
Embodied Energy, MJ/kg 18
540
Embodied Water, L/kg 45
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 77 to 100
110
Resilience: Unit (Modulus of Resilience), kJ/m3 150 to 450
3460
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
32
Strength to Weight: Axial, points 15 to 17
56
Strength to Weight: Bending, points 16 to 17
44
Thermal Shock Resistance, points 14 to 15
66

Alloy Composition

Aluminum (Al), % 0
5.5 to 6.5
Carbon (C), % 0.2 to 0.25
0 to 0.080
Hydrogen (H), % 0
0 to 0.0090
Iron (Fe), % 99.06 to 99.5
0 to 0.25
Manganese (Mn), % 0.3 to 0.6
0
Molybdenum (Mo), % 0
6.5 to 7.5
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 0.040
0
Sulfur (S), % 0 to 0.050
0
Tantalum (Ta), % 0
0 to 0.5
Titanium (Ti), % 0
84.9 to 88