Magnesium AZ63A-T7, Sand Cast

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Magnesium AZ63A-T7, Sand Cast
Categories:	Metal; Nonferrous Metal; Magnesium Alloy
Material Notes:	Sand Casting is ASTM B 80; SAE J465. Good room temperature strength, ductility, and toughness. Commonly used for parts in commercial and military structural applications requiring moderate strength and good ductility and toughness. Not typically used anymore - largely superseded by AZ91.
Key Words:	UNS M11630; Elektron AZG; Mg; Old SAE 50; AMS 4420; AMS 4422; AMS 4424; ASTM B 80; SAE J465 (Ingot UNS M11631)
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Physical Properties	Original Value	Comments

Density	1.83 g/cc

Mechanical Properties	Original Value	Comments
Hardness, Brinell	64	500 kg load, 10 mm ball
Hardness, Knoop	87	Estimated from Brinell
Hardness, Rockwell E	76
Hardness, Vickers	76	Estimated from Brinell
Tensile Strength, Ultimate	275 MPa
Tensile Strength, Yield	115 MPa @Strain 0.2 %
Elongation at Break	6.0 %	in 50 mm
Tensile Modulus	45.0 GPa
Compressive Yield Strength	115 MPa	at 0.2% offset
Ultimate Bearing Strength	515 MPa
Bearing Yield Strength	515 MPa
Poissons Ratio	0.35
Fatigue Strength	115 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

Electrical Properties	Original Value	Comments
Electrical Resistivity	0.0000130 ohm-cm	Estimated from trends in similar alloys.

Thermal Properties	Original Value	Comments
Heat of Fusion	373 J/g
CTE, linear	26.1 µm/m-°C @Temperature 0.000 - 100 °C
	27.0 µm/m-°C @Temperature 20.0 - 200 °C	Estimated from similar Mg alloys
Specific Heat Capacity	1.05 J/g-°C
Thermal Conductivity	65.1 W/m-K	(-T4 Temper)
Melting Point	>= 360 °C	Incipient Melting
Solidus	455 °C
Liquidus	610 °C

Processing Properties	Original Value	Comments
Casting Temperature	705 - 845 °C	Sand Casting

Component Elements Properties	Original Value	Comments
Aluminum, Al	5.3 - 6.7 %
Copper, Cu	<= 0.25 %
Magnesium, Mg	91 %	As Remainder
Manganese, Mn	>= 0.15 %
Nickel, Ni	<= 0.010 %
Silicon, Si	<= 0.30 %
Zinc, Zn	2.5 - 3.5 %

References for this datasheet.

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MMAZ67 / 12327

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