Aluminum 5056-H18

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Aluminum 5056-H18
Categories:	Metal; Nonferrous Metal; Aluminum Alloy; 5000 Series Aluminum 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:	UNS A95056; ISO AlMg5; ISO AlMg5Cr; Aluminium 5056-H18; AA5056-H18; Al5056-H18
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Physical Properties	Metric	English	Comments

Density	2.64 g/cc	0.0954 lb/in³	AA; Typical

Mechanical Properties	Metric	English	Comments
Hardness, Brinell	105	105	AA; Typical; 500 g load; 10 mm ball
Hardness, Knoop	132	132	Converted from Brinell Hardness Value
Hardness, Rockwell A	42.5	42.5	Converted from Brinell Hardness Value
Hardness, Rockwell B	66	66	Converted from Brinell Hardness Value
Hardness, Vickers	118	118	Converted from Brinell Hardness Value
Tensile Strength, Ultimate	434 MPa	63000 psi	AA; Typical
Tensile Strength, Yield	407 MPa	59000 psi	AA; Typical
Elongation at Break	10 % @Diameter 12.7 mm	10 % @Diameter 0.500 in	AA; Typical
Modulus of Elasticity	71.0 GPa	10300 ksi	AA; Typical; Average of tension and compression. Compression modulus is about 2% greater than tensile modulus.
Poissons Ratio	0.33	0.33	Estimated from trends in similar Al alloys.
Fatigue Strength	152 MPa @# of Cycles 5.00e+8	22000 psi @# of Cycles 5.00e+8	completely reversed stress; RR Moore machine/specimen
Shear Modulus	25.9 GPa	3760 ksi
Shear Strength	234 MPa	34000 psi	AA; Typical

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.00000640 ohm-cm	0.00000640 ohm-cm

Thermal Properties	Metric	English	Comments
CTE, linear	22.5 µm/m-°C @Temperature -50.0 - 20.0 °C	12.5 µin/in-°F @Temperature -58.0 - 68.0 °F
	24.1 µm/m-°C @Temperature 20.0 - 100 °C	13.4 µin/in-°F @Temperature 68.0 - 212 °F	AA; Typical; average over range
	25.2 µm/m-°C @Temperature 20.0 - 200 °C	14.0 µin/in-°F @Temperature 68.0 - 392 °F
	26.1 µm/m-°C @Temperature 20.0 - 300 °C	14.5 µin/in-°F @Temperature 68.0 - 572 °F
Specific Heat Capacity	0.904 J/g-°C	0.216 BTU/lb-°F
Thermal Conductivity	112 W/m-K	777 BTU-in/hr-ft²-°F
Melting Point	568.3 - 638 °C	1055 - 1180 °F	AA; Typical range based on typical composition for wrought products >= 1/4 in. thickness
Solidus	568.3 °C	1055 °F	AA; Typical
Liquidus	638 °C	1180 °F	AA; Typical

Processing Properties	Metric	English	Comments
Annealing Temperature	413 °C	775 °F	holding at temperature not required
Hot-Working Temperature	316 - 482 °C	600 - 900 °F

Component Elements Properties	Metric	English	Comments
Aluminum, Al	92.9 - 95.4 %	92.9 - 95.4 %	As remainder
Chromium, Cr	0.05 - 0.20 %	0.05 - 0.20 %
Copper, Cu	<= 0.10 %	<= 0.10 %
Iron, Fe	<= 0.40 %	<= 0.40 %
Magnesium, Mg	4.5 - 5.6 %	4.5 - 5.6 %
Manganese, Mn	0.05 - 0.20 %	0.05 - 0.20 %
Other, each	<= 0.05 %	<= 0.05 %
Other, total	<= 0.15 %	<= 0.15 %
Silicon, Si	<= 0.30 %	<= 0.30 %
Zinc, Zn	<= 0.10 %	<= 0.10 %

References for this datasheet.

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MA5056H18 / 9165

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