Magnesium AZ91A-F, Die Cast

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Magnesium AZ91A-F, Die Cast
Categories:	Metal; Nonferrous Metal; Magnesium Alloy
Material Notes:	Magnesium AZ91A, B, C, D, and E have the same nominal composition but differ in ranges and/or specified impurity limits. The die cast alloy in as-cast condition (F) can be made for secondary metal, reducing the cost of the alloy. Must be used when maximum corrosion resistance is not required.
Key Words:	UNS M11910; Mg; AMS 4490; ASTM B 94; SAE J465; Old SAE 501; European EN 1753 MC 21120 (Ingot UNS M11911)
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Physical Properties	Original Value	Comments

Density	1.81 g/cc

Mechanical Properties	Original Value	Comments
Hardness, Brinell	63	500 kg load, 10 mm ball
Hardness, Knoop	84	Estimated from Brinell
Hardness, Rockwell E	75
Hardness, Vickers	71	Estimated from Brinell
Tensile Strength, Ultimate	230 MPa
Tensile Strength, Yield	150 MPa @Strain 0.2 %
Elongation at Break	3.0 %	in 50 mm
Tensile Modulus	44.8 GPa
Compressive Yield Strength	165 MPa	at 0.2% offset
Poissons Ratio	0.35
Fatigue Strength	97.0 MPa @# of Cycles 5.00e+8	R.R. Moore Test
Machinability	100 %	Relative Rating, 100=Best
Shear Modulus	17.0 GPa
Shear Strength	140 MPa
Charpy Impact	2.70 J	V-notch

Electrical Properties	Original Value	Comments
Electrical Resistivity	0.0000143 ohm-cm	AZ91D-F

Thermal Properties	Original Value	Comments
Heat of Fusion	373 J/g
CTE, linear	26.0 µm/m-°C @Temperature 25.0 °C
	27.2 µm/m-°C @Temperature 20.0 - 200 °C
Specific Heat Capacity	1.047 J/g-°C
Thermal Conductivity	72.7 W/m-K
Melting Point	>= 421 °C	Incipient Melting
Solidus	470 °C
Liquidus	595 °C

Processing Properties	Original Value	Comments
Casting Temperature	640 - 675 °C	Die Casting

Component Elements Properties	Original Value	Comments
Aluminum, Al	8.3 - 9.7 %
Copper, Cu	<= 0.10 %
Magnesium, Mg	90 %	As Remainder
Manganese, Mn	>= 0.13 %
Nickel, Ni	<= 0.030 %
Silicon, Si	<= 0.50 %
Zinc, Zn	0.35 - 1.0 %

References for this datasheet.

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MMAZ94 / 12340

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