Aluminum 242.0-T571, Sand Cast

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Aluminum 242.0-T571, 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-T571; UNS A02420; ISO 3522 and R164 AlCu4Ni2Mg2; AA242.0-T571; Al242.0-T571
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Physical Properties	Metric	English	Comments

Density	2.81 g/cc	0.102 lb/in³	AA; Typical

Mechanical Properties	Metric	English	Comments
Hardness, Brinell	70 - 100	70 - 100	AA; Typical; 500 g load; 10 mm ball
Hardness, Knoop	109	109	Estimated from Brinell Hardness.
Hardness, Rockwell A	36	36	Estimated from Brinell Hardness.
Hardness, Rockwell B	53	53	Estimated from Brinell Hardness.
Hardness, Vickers	96	96	Estimated from Brinell Hardness.
Tensile Strength, Ultimate	>= 200 MPa	>= 29000 psi	AA
Tensile Strength, Yield	205 MPa @Strain 0.2 %	29700 psi @Strain 0.2 %	typical
Elongation at Break	0.50 %	0.50 %	in 50 mm
Tensile Modulus	71.0 GPa	10300 ksi	Compressive modulus in is typically about 2% higher for Al alloys
Compressive Yield Strength	235 MPa	34100 psi
Poissons Ratio	0.33	0.33
Fatigue Strength	75.0 MPa @# of Cycles 5.00e+8	10900 psi @# of Cycles 5.00e+8	Notch Status unknown, R.R. Moore Test
Machinability	70 %	70 %	0-100 Scale (100=best)
Shear Modulus	26.5 GPa	3840 ksi
Shear Strength	180 MPa	26100 psi

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.00000510 ohm-cm	0.00000510 ohm-cm	AA; Typical 34% IACS Conductivity

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	AA; Typical
	24.5 µm/m-°C @Temperature 20.0 - 300 °C	13.6 µin/in-°F @Temperature 68.0 - 572 °F	AA; Typical; average over range
Specific Heat Capacity	0.963 J/g-°C	0.230 BTU/lb-°F
Thermal Conductivity	134 W/m-K	928 BTU-in/hr-ft²-°F	AA; Typical at 25°C
Melting Point	532 - 635.0 °C	990 - 1175 °F	AA; Typical
Solidus	532 °C	990 °F	AA; Typical
Liquidus	635.0 °C	1175 °F	AA; Typical

Processing Properties	Metric	English	Comments
Melt Temperature	677 - 816 °C	1250 - 1500 °F
Solution Temperature	518 - 524 °C	965 - 975 °F
Aging Temperature	168 - 174 °C	335 - 345 °F	40 - 48 hrs; No Solution heat treatment.
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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MAC2420T5S / 9810

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