Aluminum 242.0-O, Sand Cast

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Aluminum 242.0-O, 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 242.0-O; UNS A02420; ISO 3522 and R164 AlCu4Ni2Mg2; AA242.0-O; Al242.0-O
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Physical Properties	Metric	English	Comments

Density	2.823 g/cc	0.1020 lb/in³

Mechanical Properties	Metric	English	Comments
Hardness, Brinell	55 - 85	55 - 85	AA; Typical; 500 g load; 10 mm ball
Hardness, Knoop	93	93	Estimated from Brinell Hardness.
Hardness, Vickers	80	80	Estimated from Brinell Hardness.
Tensile Strength, Ultimate	>= 159 MPa	>= 23000 psi	AA
Tensile Modulus	71.0 GPa	10300 ksi	Compressive modulus in is typically about 2% higher for Al alloys
Poissons Ratio	0.33	0.33
Machinability	70 %	70 %	0-100 Scale (100=best)
Shear Modulus	26.5 GPa	3840 ksi
Shear Strength	99.0 MPa	14400 psi	Calculated

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.00000480 ohm-cm	0.00000480 ohm-cm

Thermal Properties	Metric	English	Comments
Heat of Fusion	389 J/g	167 BTU/lb
CTE, linear	22.7 µm/m-°C @Temperature 20.0 - 100 °C	12.6 µin/in-°F @Temperature 68.0 - 212 °F
	24.5 µm/m-°C @Temperature 20.0 - 300 °C	13.6 µin/in-°F @Temperature 68.0 - 572 °F
Specific Heat Capacity	0.963 J/g-°C	0.230 BTU/lb-°F
Thermal Conductivity	142 W/m-K	985 BTU-in/hr-ft²-°F
Melting Point	532 - 635 °C	990 - 1180 °F
Solidus	532 °C	990 °F
Liquidus	635 °C	1180 °F

Processing Properties	Metric	English	Comments
Melt Temperature	677 - 816 °C	1250 - 1500 °F
Solution Temperature	518 - 524 °C	965 - 975 °F
Casting Temperature	677 - 788 °C	1250 - 1450 °F

Component Elements Properties	Metric	English	Comments
Aluminum, Al	88.3 - 93.6 %	88.3 - 93.6 %	As remainder
Chromium, Cr	<= 0.25 %	<= 0.25 %
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	<= 0.35 %	<= 0.35 %
Nickel, Ni	1.7 - 2.3 %	1.7 - 2.3 %
Other, each	<= 0.05 %	<= 0.05 %
Other, total	<= 0.15 %	<= 0.15 %
Silicon, Si	<= 0.70 %	<= 0.70 %
Titanium, Ti	<= 0.25 %	<= 0.25 %
Zinc, Zn	<= 0.35 %	<= 0.35 %

References for this datasheet.

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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MAC2420O / 9807

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