Aluminum 242.0-T61, Permanent Mold Cast

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Aluminum 242.0-T61, Permanent Mold 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-T61; UNS A02420; ISO 3522 and R164 AlCu4Ni2Mg2; AA242.0-T61; Al242.0-T61
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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	95 - 125	95 - 125	AA; Typical; 500 g load; 10 mm ball
Hardness, Knoop	138	138	Estimated from Brinell Hardness.
Hardness, Rockwell A	43	43	Estimated from Brinell Hardness.
Hardness, Rockwell B	69	69	Estimated from Brinell Hardness.
Hardness, Vickers	124	124	Estimated from Brinell Hardness.
Tensile Strength, Ultimate	>= 276 MPa	>= 40000 psi	AA
Tensile Strength, Yield	290 MPa @Strain 0.2 %	42100 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	305 MPa	44200 psi
Poissons Ratio	0.33	0.33
Fatigue Strength	65.0 MPa @# of Cycles 5.00e+8	9430 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	240 MPa	34800 psi

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.00000522 ohm-cm	0.00000522 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	130 W/m-K	902 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	513 - 518 °C	955 - 965 °F
Aging Temperature	202 - 207 °C	395 - 405 °F	3 - 5 hrs
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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MAC2420T6P / 9811

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