Aluminum 712.0-T5, Sand Cast

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Aluminum 712.0-T5, Sand Cast
Categories:	Metal; Nonferrous Metal; Aluminum Alloy; Aluminum Casting 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 712.0-T5; UNS A07120; AA712.0-T5. 5.8Zn-0.6Mg-0.5Cr-0.2Ti. Comparable to AC-71000 (AC71000); Al712.0-T5
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Physical Properties	Original Value	Comments

Density	2.81 g/cc

Mechanical Properties	Original Value	Comments
Hardness, Brinell	60 - 90	AA; Typical; 500 g load; 10 mm ball
Hardness, Knoop	98	Estimated from Brinell Hardness.
Hardness, Vickers	85	Estimated from Brinell Hardness.
Tensile Strength, Ultimate	>= 34.0 ksi	AA
Tensile Strength, Yield	>= 25.0 ksi @Strain 0.2 %	AA
Elongation at Break	>= 4.0 %	AA; in 2 in. (50 mm) or 4D
Tensile Modulus	71.0 GPa	Compressive modulus in is typically about 2% higher for Al alloys
Compressive Yield Strength	95.0 MPa
Poissons Ratio	0.33
Fatigue Strength	62.0 MPa @# of Cycles 5.00e+8	Notch Status unknown, R.R. Moore Test
Machinability	90 %	0-100 Scale (100=best)
Shear Modulus	26.5 GPa
Shear Strength	180 MPa
Charpy Impact	3.30 J	±0.6 J; V-notch

Electrical Properties	Original Value	Comments
Electrical Resistivity	0.00000490 ohm-cm

Thermal Properties	Original Value	Comments
Heat of Fusion	389 J/g
CTE, linear	24.7 µm/m-°C @Temperature 20.0 - 100 °C
	26.6 µm/m-°C @Temperature 20.0 - 300 °C
Specific Heat Capacity	0.963 J/g-°C
Thermal Conductivity	138 W/m-K
Melting Point	613 - 649 °C
Solidus	613 °C
Liquidus	649 °C

Processing Properties	Original Value	Comments
Aging Temperature	72.0 °F	for 21 days
	315 °F	for 6 - 8 hrs

Component Elements Properties	Original Value	Comments
Aluminum, Al	90.6 - 94 %	As remainder
Chromium, Cr	0.40 - 0.60 %
Copper, Cu	<= 0.25 %
Iron, Fe	<= 0.50 %
Magnesium, Mg	0.50 - 0.65 %
Manganese, Mn	<= 0.10 %
Other, each	<= 0.05 %
Other, total	<= 0.20 %
Silicon, Si	<= 0.30 %
Titanium, Ti	0.15 - 0.25 %
Zinc, Zn	5.0 - 6.5 %

References for this datasheet.

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MAC7120T5 / 10181

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