Aluminum 2219-T87

Aluminum 2219-T87

Subcategory: 2000 Series Aluminum Alloy; Aluminum Alloy; Metal; Nonferrous Metal

Close Analogs:

Composition Notes:
This designation is considered the sole original alloy for this alloy family.
Aluminum content reported is calculated as remainder.
Composition information provided by the Aluminum Association and is not for design.

Key Words: UNS A92219; ISO AlCu6Mn; Aluminium 2219-T87; AA2219-T87

Component    Wt. %
Al 91.5 – 93.8
Cu 5.8 – 6.8
Fe Max 0.3
Mg Max 0.02
Component    Wt. %
Mn 0.2 – 0.4
Other, each Max 0.05
Other, total Max 0.15
Si Max 0.2
Component    Wt. %
Ti 0.02 – 0.1
V 0.05 – 0.15
Zn Max 0.1
Zr 0.1 – 0.25

Material Notes: 
Data points with the AA note have been provided by the Aluminum Association, Inc. and are NOT FOR DESIGN.

Physical Properties

Physical Properties Metric English Comments
Density 2.84 g/cc 0.103 lb/in³  AA; Typical

Mechanical Properties

Hardness, Brinell 130 130  500 kg load with 10 mm ball
Hardness, Knoop 163 163  Converted from Brinell Hardness Value
Hardness, Rockwell A 49.5 49.5  Converted from Brinell Hardness Value
Hardness, Rockwell B 80 80  Converted from Brinell Hardness Value
Hardness, Vickers 149 149  Converted from Brinell Hardness Value
Ultimate Tensile Strength 476 MPa 69000 psi  AA; Typical
Tensile Yield Strength 393 MPa 57000 psi  AA; Typical
Elongation at Break 10 % 10 %  AA; Typical; 1/16 in. (1.6 mm) Thickness
Modulus of Elasticity 73.1 GPa 10600 ksi  AA; Typical; Average of tension and compression. Compression modulus is about 2% greater than tensile modulus.
Notched Tensile Strength 379 MPa 55000 psi  2.5 cm width x 0.16 cm thick side-notched specimen, Kt = 17.
Poisson’s Ratio 0.33 0.33  Estimated from trends in similar Al alloys.
Fatigue Strength 103 MPa 15000 psi  AA; 500,000,000 cycles completely reversed stress; RR Moore machine/specimen
Shear Modulus 27 GPa 3920 ksi  Estimated from similar Al alloys.
Shear Strength 280 MPa 40600 psi

Electrical Properties

Electrical Resistivity 5.82e-006 ohm-cm 5.82e-006 ohm-cm AA; Typical at 68°F

Thermal Properties

CTE, linear 68°F 22.3 µm/m-°C 12.4 µin/in-°F  AA; Typical; Average over 68-212°F range.
CTE, linear 250°C 24.1 µm/m-°C 13.4 µin/in-°F  Estimated from trends in similar Al alloys. 20-300°C.
Specific Heat Capacity 0.864 J/g-°C 0.207 BTU/lb-°F
Thermal Conductivity 121 W/m-K 840 BTU-in/hr-ft²-°F  AA; Typical at 77°F
Melting Point 543 – 643 °C 1010 – 1190 °F  AA; Typical range based on typical composition for wrought products 1/4 inch thickness or greater. Eutectic melting is not eliminated by homogenization.
Solidus 543 °C 1010 °F  AA; Typical
Liquidus 643 °C 1190 °F  AA; Typical

Processing Properties

Annealing Temperature 413 °C 775 °F
Solution Temperature 535 °C 995 °F
Aging Temperature 163 – 191 °C 325 – 375 °F  from 18 to 36 hr at temperature