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	Metric	English	Comments

Density	1.81 g/cc	0.0654 lb/in³

Mechanical Properties	Metric	English	Comments
Hardness, Brinell	63	63	500 kg load, 10 mm ball
Hardness, Knoop	84	84	Estimated from Brinell
Hardness, Rockwell E	75	75
Hardness, Vickers	71	71	Estimated from Brinell
Tensile Strength, Ultimate	230 MPa	33400 psi
Tensile Strength, Yield	150 MPa @Strain 0.2 %	21800 psi @Strain 0.2 %
Elongation at Break	3.0 %	3.0 %	in 50 mm
Tensile Modulus	44.8 GPa	6500 ksi
Compressive Yield Strength	165 MPa	23900 psi	at 0.2% offset
Poissons Ratio	0.35	0.35
Fatigue Strength	97.0 MPa @# of Cycles 5.00e+8	14100 psi @# of Cycles 5.00e+8	R.R. Moore Test
Machinability	100 %	100 %	Relative Rating, 100=Best
Shear Modulus	17.0 GPa	2470 ksi
Shear Strength	140 MPa	20300 psi
Charpy Impact	2.70 J	1.99 ft-lb	V-notch

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.0000143 ohm-cm	0.0000143 ohm-cm	AZ91D-F

Thermal Properties	Metric	English	Comments
Heat of Fusion	373 J/g	160 BTU/lb
CTE, linear	26.0 µm/m-°C @Temperature 25.0 °C	14.4 µin/in-°F @Temperature 77.0 °F
	27.2 µm/m-°C @Temperature 20.0 - 200 °C	15.1 µin/in-°F @Temperature 68.0 - 392 °F
Specific Heat Capacity	1.047 J/g-°C	0.2502 BTU/lb-°F
Thermal Conductivity	72.7 W/m-K	505 BTU-in/hr-ft²-°F
Melting Point	>= 421 °C	>= 790 °F	Incipient Melting
Solidus	470 °C	878 °F
Liquidus	595 °C	1100 °F

Processing Properties	Metric	English	Comments
Casting Temperature	640 - 675 °C	1180 - 1250 °F	Die Casting

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

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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MMAZ94 / 12340

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