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2117 Aluminum vs. ASTM B817 Type II

2117 aluminum belongs to the aluminum alloys classification, while ASTM B817 type II belongs to the titanium alloys. There are 25 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is 2117 aluminum and the bottom bar is ASTM B817 type II.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
100
Elongation at Break, % 26
3.0 to 13
Fatigue Strength, MPa 95
390 to 530
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 27
40
Tensile Strength: Ultimate (UTS), MPa 300
900 to 960
Tensile Strength: Yield (Proof), MPa 170
780 to 900

Thermal Properties

Latent Heat of Fusion, J/g 400
400
Maximum Temperature: Mechanical, °C 220
350
Melting Completion (Liquidus), °C 650
1580
Melting Onset (Solidus), °C 550
1530
Specific Heat Capacity, J/kg-K 880
550
Thermal Expansion, µm/m-K 24
9.9

Otherwise Unclassified Properties

Base Metal Price, % relative 10
37
Density, g/cm3 3.0
4.6
Embodied Carbon, kg CO2/kg material 8.2
40
Embodied Energy, MJ/kg 150
650
Embodied Water, L/kg 1150
220

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 64
26 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 190
2890 to 3890
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 47
34
Strength to Weight: Axial, points 28
55 to 58
Strength to Weight: Bending, points 33
45 to 47
Thermal Shock Resistance, points 12
62 to 66

Alloy Composition

Aluminum (Al), % 91 to 97.6
5.0 to 6.0
Carbon (C), % 0
0 to 0.1
Chlorine (Cl), % 0
0 to 0.2
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 2.2 to 4.5
0.35 to 1.0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 0 to 0.7
0.35 to 1.0
Magnesium (Mg), % 0.2 to 1.0
0
Manganese (Mn), % 0.4 to 1.0
0
Nitrogen (N), % 0
0 to 0.040
Oxygen (O), % 0
0 to 0.3
Silicon (Si), % 0.2 to 0.8
0 to 0.1
Sodium (Na), % 0
0 to 0.2
Tin (Sn), % 0
1.5 to 2.5
Titanium (Ti), % 0 to 0.25
82.1 to 87.8
Vanadium (V), % 0
5.0 to 6.0
Zinc (Zn), % 0 to 0.25
0
Zirconium (Zr), % 0 to 0.25
0
Residuals, % 0
0 to 0.4