Aluminum 7021-T62

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Aluminum 7021-T62
Categories:	Metal; Nonferrous Metal; Aluminum Alloy; 7000 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:	UNS A97021; Aluminium 7021-T62; AA7021-T62; Al7021-T62
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Physical Properties	Metric	English	Comments

Density	2.78 g/cc	0.100 lb/in³	AA; Typical

Mechanical Properties	Metric	English	Comments
Hardness, Brinell	112	112	500 kg load with 10 mm ball. Calculated value.
Hardness, Knoop	140	140	Converted from Brinell Hardness Value
Hardness, Rockwell A	44.8	44.8	Converted from Brinell Hardness Value
Hardness, Rockwell B	70	70	Converted from Brinell Hardness Value
Hardness, Vickers	127	127	Converted from Brinell Hardness Value
Tensile Strength, Ultimate	420 MPa	60900 psi
Tensile Strength, Yield	380 MPa	55100 psi
Elongation at Break	13 % @Thickness 1.60 mm	13 % @Thickness 0.0630 in	In 5 cm
Modulus of Elasticity	72.0 GPa	10400 ksi	Average of Tension and Compression. In Al alloys, the compressive modulus is typically 2% greater than the tensile modulus. Estimated from trends in similar Al alloys.
Poissons Ratio	0.33	0.33	Estimated from trends in similar Al alloys.
Fatigue Strength	140 MPa @# of Cycles 5.00e+8	20300 psi @# of Cycles 5.00e+8
Shear Modulus	27.0 GPa	3920 ksi	Estimated from similar Al alloys.
Shear Strength	250 MPa	36300 psi	Calculated value.

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.00000450 ohm-cm	0.00000450 ohm-cm	Estimated from trends in similar Al alloys.

Thermal Properties	Metric	English	Comments
CTE, linear	23.6 µm/m-°C @Temperature 20.0 - 100 °C	13.1 µin/in-°F @Temperature 68.0 - 212 °F
	25.3 µm/m-°C @Temperature 20.0 - 300 °C	14.1 µin/in-°F @Temperature 68.0 - 572 °F
Specific Heat Capacity	0.880 J/g-°C	0.210 BTU/lb-°F	Estimated from trends in similar Al alloys.
Thermal Conductivity	140 W/m-K	972 BTU-in/hr-ft²-°F	Estimated from trends in similar Al alloys.
Melting Point	<= 640 °C	<= 1180 °F	Estimated from trends in similar Al alloys.
Liquidus	640 °C	1180 °F	Estimated from trends in similar Al alloys.

Component Elements Properties	Metric	English	Comments
Aluminum, Al	90.7 - 93.7 %	90.7 - 93.7 %	As remainder
Chromium, Cr	<= 0.05 %	<= 0.05 %
Copper, Cu	<= 0.25 %	<= 0.25 %
Iron, Fe	<= 0.40 %	<= 0.40 %
Magnesium, Mg	1.2 - 1.8 %	1.2 - 1.8 %
Manganese, Mn	<= 0.10 %	<= 0.10 %
Other, each	<= 0.05 %	<= 0.05 %
Other, total	<= 0.15 %	<= 0.15 %
Silicon, Si	<= 0.25 %	<= 0.25 %
Titanium, Ti	<= 0.10 %	<= 0.10 %
Zinc, Zn	5.0 - 6.0 %	5.0 - 6.0 %
Zirconium, Zr	0.08 - 0.18 %	0.08 - 0.18 %

References for this datasheet.

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MA7021T62 / 9548

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