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AWS ERTi-2 vs. B390.0 Aluminum

AWS ERTi-2 belongs to the titanium alloys classification, while B390.0 aluminum belongs to the aluminum alloys.

For each property being compared, the top bar is AWS ERTi-2 and the bottom bar is B390.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
76
Elongation at Break, % 20
0.88
Fatigue Strength, MPa 190
170
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 40
29
Tensile Strength: Ultimate (UTS), MPa 340
320
Tensile Strength: Yield (Proof), MPa 280
250

Thermal Properties

Latent Heat of Fusion, J/g 420
640
Maximum Temperature: Mechanical, °C 320
170
Melting Completion (Liquidus), °C 1670
580
Melting Onset (Solidus), °C 1620
580
Specific Heat Capacity, J/kg-K 540
880
Thermal Conductivity, W/m-K 21
130
Thermal Expansion, µm/m-K 8.7
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.6
27
Electrical Conductivity: Equal Weight (Specific), % IACS 7.1
88

Otherwise Unclassified Properties

Base Metal Price, % relative 37
11
Density, g/cm3 4.5
2.8
Embodied Carbon, kg CO2/kg material 31
7.3
Embodied Energy, MJ/kg 510
130
Embodied Water, L/kg 110
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 64
2.6
Resilience: Unit (Modulus of Resilience), kJ/m3 360
410
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 35
51
Strength to Weight: Axial, points 21
32
Strength to Weight: Bending, points 24
38
Thermal Diffusivity, mm2/s 8.7
55
Thermal Shock Resistance, points 27
15

Alloy Composition

Aluminum (Al), % 0
72.7 to 79.6
Carbon (C), % 0 to 0.030
0
Copper (Cu), % 0
4.0 to 5.0
Hydrogen (H), % 0 to 0.0080
0
Iron (Fe), % 0 to 0.12
0 to 1.3
Magnesium (Mg), % 0
0.45 to 0.65
Manganese (Mn), % 0
0 to 0.5
Nickel (Ni), % 0
0 to 0.1
Nitrogen (N), % 0 to 0.015
0
Oxygen (O), % 0.080 to 0.16
0
Silicon (Si), % 0
16 to 18
Titanium (Ti), % 99.667 to 99.92
0 to 0.1
Zinc (Zn), % 0
0 to 1.5
Residuals, % 0
0 to 0.2