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Aluminum Castings

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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 PropertiesOriginal ValueComments
Density 2.823 g/cc
 
Mechanical PropertiesOriginal ValueComments
Hardness, Brinell 95 - 125AA; Typical; 500 g load; 10 mm ball
Hardness, Knoop 138Estimated from Brinell Hardness.
Hardness, Rockwell A 43Estimated from Brinell Hardness.
Hardness, Rockwell B 69Estimated from Brinell Hardness.
Hardness, Vickers 124Estimated from Brinell Hardness.
Tensile Strength, Ultimate >= 40.0 ksiAA
Tensile Strength, Yield 290 MPa
@Strain 0.2 %
typical
Elongation at Break 0.50 %in 50 mm
Tensile Modulus 71.0 GPaCompressive modulus in is typically about 2% higher for Al alloys
Compressive Yield Strength 305 MPa
Poissons Ratio 0.33
Fatigue Strength 65.0 MPa
@# of Cycles 5.00e+8
Notch Status unknown, R.R. Moore Test
Machinability 70 %0-100 Scale (100=best)
Shear Modulus 26.5 GPa
Shear Strength 240 MPa
 
Electrical PropertiesOriginal ValueComments
Electrical Resistivity 0.00000522 ohm-cm
 
Thermal PropertiesOriginal ValueComments
Heat of Fusion 389 J/g
CTE, linear 22.7 µm/m-°C
@Temperature 20.0 - 100 °C
 24.5 µm/m-°C
@Temperature 20.0 - 300 °C
Specific Heat Capacity 0.963 J/g-°C
Thermal Conductivity 130 W/m-K
Melting Point 532 - 635 °C
Solidus 532 °C
Liquidus 635 °C
 
Processing PropertiesOriginal ValueComments
Melt Temperature 1250 - 1500 °F
Solution Temperature 955 - 965 °F
Aging Temperature 395 - 405 °F3 - 5 hrs
Casting Temperature 1250 - 1450 °F
 
Component Elements PropertiesOriginal ValueComments
Aluminum, Al 88.3 - 93.6 %As remainder
Chromium, Cr <= 0.25 %
Copper, Cu 3.5 - 4.5 %
Iron, Fe <= 1.0 %
Magnesium, Mg 1.2 - 1.8 %
Manganese, Mn <= 0.35 %
Nickel, Ni 1.7 - 2.3 %
Other, each <= 0.05 %
Other, total <= 0.15 %
Silicon, Si <= 0.70 %
Titanium, Ti <= 0.25 %
Zinc, Zn <= 0.35 %

References for this datasheet.

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