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Elmet Technologies

Aluminum 2218-T61
Categories: Metal; Nonferrous Metal; Aluminum Alloy; 2000 Series Aluminum Alloy

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

Composition Notes:
Composition information provided by the Aluminum Association and is not for design.

Key Words: Aluminium 2218-T61; UNS A92218; AMS 4142; NF A-U4N (France); QQ-A-367; SAE J454; AA2218-T61; Al2218-T61
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Physical PropertiesMetricEnglishComments
Density 2.81 g/cc0.102 lb/in³AA; Typical
 
Mechanical PropertiesMetricEnglishComments
Hardness, Brinell 115115500 kg load with 10 mm ball
Hardness, Knoop 140140Converted from Brinell Hardness Value
Hardness, Rockwell A 45.545.5Converted from Brinell Hardness Value
Hardness, Rockwell B 7171Converted from Brinell Hardness Value
Hardness, Vickers 126126Converted from Brinell Hardness Value
Tensile Strength, Ultimate 405 MPa58700 psi
 30.0 MPa
@Temperature 371 °C
4350 psi
@Temperature 700 °F
 40.0 MPa
@Temperature 315 °C
5800 psi
@Temperature 599 °F
 70.0 MPa
@Temperature 260 °C
10200 psi
@Temperature 500 °F
 150 MPa
@Temperature 205 °C
21800 psi
@Temperature 401 °F
 285 MPa
@Temperature 150 °C
41300 psi
@Temperature 302 °F
 385 MPa
@Temperature 100 °C
55800 psi
@Temperature 212 °F
 405 MPa
@Temperature -30.0 °C
58700 psi
@Temperature -22.0 °F
 405 MPa
@Temperature 25.0 °C
58700 psi
@Temperature 77.0 °F
 420 MPa
@Temperature -80.0 °C
60900 psi
@Temperature -112 °F
 495 MPa
@Temperature -195 °C
71800 psi
@Temperature -319 °F
Tensile Strength, Yield 305 MPa44200 psi
 17.0 MPa
@Temperature 371 °C
2470 psi
@Temperature 700 °F
 20.0 MPa
@Temperature 315 °C
2900 psi
@Temperature 599 °F
 40.0 MPa
@Temperature 260 °C
5800 psi
@Temperature 500 °F
 110 MPa
@Temperature 205 °C
16000 psi
@Temperature 401 °F
 240 MPa
@Temperature 150 °C
34800 psi
@Temperature 302 °F
 290 MPa
@Temperature 100 °C
42100 psi
@Temperature 212 °F
 305 MPa
@Temperature -30.0 °C
44200 psi
@Temperature -22.0 °F
 305 MPa
@Temperature 25.0 °C
44200 psi
@Temperature 77.0 °F
 310 MPa
@Temperature -80.0 °C
45000 psi
@Temperature -112 °F
 360 MPa
@Temperature -195 °C
52200 psi
@Temperature -319 °F
Elongation at Break  13 %
@Temperature -30.0 °C
13 %
@Temperature -22.0 °F
 13 %
@Temperature 25.0 °C
13 %
@Temperature 77.0 °F
 14 %
@Temperature -80.0 °C
14 %
@Temperature -112 °F
 15 %
@Temperature -195 °C
15 %
@Temperature -319 °F
 15 %
@Temperature 100 °C
15 %
@Temperature 212 °F
 17 %
@Temperature 150 °C
17 %
@Temperature 302 °F
 30 %
@Temperature 205 °C
30 %
@Temperature 401 °F
 70 %
@Temperature 260 °C
70 %
@Temperature 500 °F
 85 %
@Temperature 315 °C
85 %
@Temperature 599 °F
 100 %
@Temperature 371 °C
100 %
@Temperature 700 °F
 13 %
@Thickness 1.60 mm
13 %
@Thickness 0.0630 in
In 5 cm
Modulus of Elasticity 74.4 GPa10800 ksiAverage of Tension and Compression. In Al alloys, the compressive modulus is typically 2% greater than the tensile modulus
Poissons Ratio 0.330.33
Shear Modulus 27.5 GPa3990 ksi
Shear Strength 240 MPa34800 psiCalculated value.
 
Electrical PropertiesMetricEnglishComments
Electrical Resistivity 0.00000450 ohm-cm0.00000450 ohm-cm
 
Thermal PropertiesMetricEnglishComments
CTE, linear  20.7 µm/m-°C
@Temperature -50.0 - 20.0 °C
11.5 µin/in-°F
@Temperature -58.0 - 68.0 °F
 22.3 µm/m-°C
@Temperature 20.0 - 100 °C
12.4 µin/in-°F
@Temperature 68.0 - 212 °F
AA; Typical; average over range
 22.4 µm/m-°C
@Temperature 20.0 - 100 °C
12.4 µin/in-°F
@Temperature 68.0 - 212 °F
 23.3 µm/m-°C
@Temperature 20.0 - 200 °C
12.9 µin/in-°F
@Temperature 68.0 - 392 °F
 24.2 µm/m-°C
@Temperature 20.0 - 300 °C
13.4 µin/in-°F
@Temperature 68.0 - 572 °F
Specific Heat Capacity 0.880 J/g-°C0.210 BTU/lb-°FEstimated from trends in similar Al alloys.
Thermal Conductivity 148 W/m-K1030 BTU-in/hr-ft²-°F
Melting Point 502 - 638 °C935 - 1180 °FAA; Typical range based on typical composition for wrought products >= 1/4 in. thickness. Eutectic melting is not eliminated by homogenization.
Solidus 502 °C935 °FAA; Typical
Liquidus 638 °C1180 °FAA; Typical
 
Processing PropertiesMetricEnglishComments
Solution Temperature 510 °C950 °F
Aging Temperature 171 °C340 °Ffor 10 hr at temperature
 
Component Elements PropertiesMetricEnglishComments
Aluminum, Al 88.8 - 93.6 %88.8 - 93.6 %As remainder
Chromium, Cr <= 0.10 %<= 0.10 %
Copper, Cu 3.5 - 4.5 %3.5 - 4.5 %
Iron, Fe <= 1.0 %<= 1.0 %
Magnesium, Mg 1.2 - 1.8 %1.2 - 1.8 %
Manganese, Mn <= 0.20 %<= 0.20 %
Nickel, Ni 1.7 - 2.3 %1.7 - 2.3 %
Other, each <= 0.05 %<= 0.05 %
Other, total <= 0.15 %<= 0.15 %
Silicon, Si <= 0.90 %<= 0.90 %
Zinc, Zn <= 0.25 %<= 0.25 %

References for this datasheet.

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MA2218T61 / 8923

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