Magnesium AZ92A-T6, Cast

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Magnesium AZ92A-T6, Cast
Categories:	Metal; Nonferrous Metal; Magnesium Alloy
Material Notes:	A, B, C, D, and E Have the same nominal composition but differ in ranges and/or specified impurity limits. Sand Casting: AMS 4434, ASTM B 80; Investment Casting: AMS 4453, ASTM B 403; Permanent Mold Casting: AMS 4484, ASTM B 199; Typically used for commercial and military pressure-tight sand and permanent-mold castings having high tensile strength and good yield strength.
Key Words:	UNS M11920; Mg; SAE J465; Old SAE 500; AMS 4434; AMS 4453; AMS 4484; ASTM B 80; ASTM B 199; ASTM B 403 (Ingot UNS M11921)
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Physical Properties	Original Value	Comments

Density	1.83 g/cc

Mechanical Properties	Original Value	Comments
Hardness, Brinell	84	500 kg load, 10 mm ball
Hardness, Knoop	108	Estimated from Brinell
Hardness, Rockwell A	36	Estimated from Brinell
Hardness, Rockwell B	52	Estimated from Brinell
Hardness, Rockwell E	88
Hardness, Vickers	95	Estimated from Brinell
Tensile Strength, Ultimate	275 MPa
	295 MPa @Temperature -78.0 °C
	320 MPa @Temperature -196 °C
	55.0 MPa @Temperature 315 °C, Time 601 sec	tested at elevated temperature
	115 MPa @Temperature 205 °C, Time 3.60e+6 sec	tested at elevated temperature
	195 MPa @Temperature 150 °C, Time 601 sec	tested at elevated temperature
Tensile Strength, Yield	170 MPa @Temperature -78.0 °C
	195 MPa @Temperature -196 °C
	150 MPa @Strain 0.2 %
Elongation at Break	3.0 %	in 50 mm
	0.80 % @Temperature -196 °C
	2.3 % @Temperature -78.0 °C
Creep Strength	3.40 MPa @Temperature 205 °C, Time 3.60e+6 sec	0.2% total extension
Modulus of Elasticity	21.0 GPa @Temperature 315 °C
	31.0 GPa @Temperature 205 °C
Tensile Modulus	45.0 GPa
Compressive Yield Strength	150 MPa	at 0.2% offset
Ultimate Bearing Strength	550 MPa
Bearing Yield Strength	450 MPa
Poissons Ratio	0.35
Fatigue Strength	30.0 MPa @# of Cycles 1.00e+8	Notched Fatigue, Notched, K_t=5, Rotating Beam, Sand cast
	40.0 MPa @# of Cycles 1.00e+6	Notched Fatigue, Notched, K_t=5, Rotating Beam, Sand cast
	60.0 MPa @# of Cycles 1.00e+8	Notched Fatigue, Notched, K_t=2, Rotating Beam, Sand cast
	80.0 MPa @# of Cycles 1.00e+6	Notched Fatigue, Notched, K_t=2, Rotating Beam, Sand cast
	83.0 MPa @# of Cycles 5.00e+8	R.R. Moore Test
	85.0 MPa @# of Cycles 5.00e+8	Notched Fatigue, 5x Smooth, Rotating Beam, Sand cast
	90.0 MPa @# of Cycles 1.00e+7	Unnotched Fatigue, Krouse plate bending, R=-1, Sand cast
	95.0 MPa @# of Cycles 1.00e+8	Notched Fatigue, Smooth, Rotating Beam, Sand cast
	100 MPa @# of Cycles 1.00e+6	Unnotched Fatigue, Krouse plate bending, R=-1, Sand cast
	100 MPa @# of Cycles 1.00e+7	Notched Fatigue, Smooth, Rotating Beam, Sand cast
	115 MPa @# of Cycles 1.00e+6	Notched Fatigue, Smooth, Rotating Beam, Sand cast
	125 MPa @# of Cycles 100000	Unnotched Fatigue, Krouse plate bending, R=-1, Sand cast
	130 MPa @# of Cycles 100000	Notched Fatigue, Smooth, Rotating Beam, Sand cast
	190 MPa @# of Cycles 1.00e+7	Unnotched Fatigue, Axial, R=0.25, Sand cast
	195 MPa @# of Cycles 1.00e+6	Unnotched Fatigue, Axial, R=0.25, Sand cast
	210 MPa @# of Cycles 100000	Unnotched Fatigue, Axial, R=0.25, Sand cast
Machinability	100 %	Relative Rating, 100=Best
Shear Modulus	17.0 GPa
Shear Strength	150 MPa
Charpy Impact	0.680 J	V-notch
	0.680 J @Temperature -196 °C	Notched
	0.760 J @Temperature -78.0 °C	Notched
Charpy Impact, Unnotched	4.57 J @Temperature -196 °C
	6.44 J @Temperature -78.0 °C
	7.62 J @Temperature 24.0 °C

Electrical Properties	Original Value	Comments
Electrical Resistivity	0.0000124 ohm-cm

Thermal Properties	Original Value	Comments
Heat of Fusion	373 J/g
CTE, linear	26.0 µm/m-°C @Temperature 0.000 - 100 °C
	27.2 µm/m-°C @Temperature 20.0 - 200 °C
Specific Heat Capacity	1.05 J/g-°C
Thermal Conductivity	58.3 W/m-K
Melting Point	>= 410 °C	Incipient Melting
Solidus	445 °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	8.3 - 9.7 %
Copper, Cu	<= 0.25 %
Magnesium, Mg	89 %	As Remainder
Manganese, Mn	>= 0.10 %
Nickel, Ni	<= 0.010 %
Silicon, Si	<= 0.30 %
Zinc, Zn	1.6 - 2.4 %

References for this datasheet.

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MMAZ97 / 12344

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