Aluminum 208.0-T4, Permanent Mold Cast

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Aluminum 208.0-T4, 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.
Key Words:	Aluminium 208.0-T4; UNS A02080; AA208.0-T4; Al208.0-T4
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Physical Properties	Metric	English	Comments

Density	2.79 g/cc	0.101 lb/in³

Mechanical Properties	Metric	English	Comments
Hardness, Brinell	60 - 90	60 - 90	AA; Typical; 500 g load; 10 mm ball
Hardness, Knoop	98	98	Estimated from Brinell Hardness.
Hardness, Rockwell B	45	45	Estimated from Brinell Hardness.
Hardness, Vickers	85	85	Estimated from Brinell Hardness.
Tensile Strength, Ultimate	>= 228 MPa	>= 33000 psi	AA
Tensile Strength, Yield	>= 103 MPa @Strain 0.2 %	>= 15000 psi @Strain 0.2 %	AA
Elongation at Break	>= 4.5 %	>= 4.5 %	AA; in 2 in. (50 mm) or 4D
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	50 %	50 %	0-100 Scale (100=best)
Shear Modulus	26.5 GPa	3840 ksi
Shear Strength	139 MPa	20200 psi	Calculated

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.00000550 ohm-cm	0.00000550 ohm-cm

Thermal Properties	Metric	English	Comments
Heat of Fusion	389 J/g	167 BTU/lb
CTE, linear	22.3 µm/m-°C @Temperature 20.0 - 100 °C	12.4 µin/in-°F @Temperature 68.0 - 212 °F
	24.1 µm/m-°C @Temperature 20.0 - 300 °C	13.4 µin/in-°F @Temperature 68.0 - 572 °F
Specific Heat Capacity	0.963 J/g-°C	0.230 BTU/lb-°F
Thermal Conductivity	126 W/m-K	874 BTU-in/hr-ft²-°F
Melting Point	521 - 627 °C	970 - 1160 °F
Solidus	521 °C	970 °F
Liquidus	627 °C	1160 °F

Processing Properties	Metric	English	Comments
Melt Temperature	677 - 816 °C	1250 - 1500 °F
Casting Temperature	677 - 788 °C	1250 - 1450 °F

Component Elements Properties	Metric	English	Comments
Aluminum, Al	93 %	93 %	As remainder
Copper, Cu	3.5 - 4.5 %	3.5 - 4.5 %
Iron, Fe	<= 1.2 %	<= 1.2 %
Magnesium, Mg	<= 0.10 %	<= 0.10 %
Manganese, Mn	<= 0.50 %	<= 0.50 %
Nickel, Ni	<= 0.35 %	<= 0.35 %
Silicon, Si	2.5 - 3.5 %	2.5 - 3.5 %
Titanium, Ti	<= 0.25 %	<= 0.25 %
Zinc, Zn	<= 1.0 %	<= 1.0 %

References for this datasheet.

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MAC2080T4 / 9777

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