Magnesium AZ91C-F, Cast

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Magnesium AZ91C-F, Cast
Categories:	Metal; Nonferrous Metal; Magnesium Alloy
Material Notes:	AZ91A, B, C, D, and E have the same nominal composition but differ in ranges and/or specified impurity limits. This alloy is used in sand cast and permanent-mold castings when maximum corrosion resistance is not required.
Key Words:	UNS M11914; Mg; European EN 1753 MC 21120; AMS 4490; ASTM B 80; ASTM B 403; SAE J465; Old SAE 504 (Ingot UNS M11915)
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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	66
Hardness, Vickers	71	Estimated from Brinell
Tensile Strength, Ultimate	165 MPa
Tensile Strength, Yield	97.0 MPa @Strain 0.2 %
Elongation at Break	2.5 %	in 50 mm
Tensile Modulus	45.0 GPa
Compressive Yield Strength	97.0 MPa	at 0.2% offset
Ultimate Bearing Strength	410 MPa
Bearing Yield Strength	275 MPa
Poissons Ratio	0.35
Fatigue Strength	55.0 MPa @# of Cycles 1.00e+8	Notched Fatigue, Rotating Beam, R=-1, Notched, Sand cast
	60.0 MPa @# of Cycles 1.00e+7	Unnotched Fatigue, Krouse plate bending, R=-1, Sand cast
	70.0 MPa @# of Cycles 1.00e+6	Notched Fatigue, Rotating Beam, R=-1, Notched, Sand cast
	75.0 MPa @# of Cycles 1.00e+6	Unnotched Fatigue, Krouse plate bending, R=-1, Sand cast
	85.0 MPa @# of Cycles 100000	Unnotched Fatigue, Krouse plate bending, R=-1 , Sand cast
	85.0 MPa @# of Cycles 1.00e+8	Notched Fatigue, Rotating Beam, R=-1, Smooth, Sand cast
	80.0 - 95.0 MPa @# of Cycles 5.00e+8	R.R. Moore Test
	95.0 MPa @# of Cycles 1.00e+7	Notched Fatigue, Rotating Beam (R=-1), Smooth, Sand cast
	105 MPa @# of Cycles 1.00e+6	Notched Fatigue, Rotating Beam, R=-1, Smooth, Sand cast
	110 MPa @# of Cycles 1.00e+6	Notched Fatigue, Rotating Beam, R=-1, Smooth, Sand cast
Shear Modulus	17.0 GPa
Charpy Impact	0.790 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	0.800 J/g-°C @Temperature 20.0 °C
Thermal Conductivity	72.7 W/m-K
Melting Point	>= 420 °C	Incipient Melting
Solidus	470 °C
Liquidus	595 °C

Processing Properties	Original Value	Comments
Casting Temperature	650 - 815 °C	Permanent Mold Casting
	705 - 845 °C	Sand Casting

Component Elements Properties	Original Value	Comments
Aluminum, Al	8.1 - 9.3 %
Copper, Cu	<= 0.10 %
Magnesium, Mg	90 %	As Remainder
Manganese, Mn	>= 0.13 %
Nickel, Ni	<= 0.010 %
Silicon, Si	<= 0.30 %
Zinc, Zn	0.40 - 1.0 %

References for this datasheet.

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MMAZ91CF / 12336

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