Materion SupremEX® 640XA MMC Aluminum - Silicon Carbide Metal Matrix Composite, T7, Billet

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Materion SupremEX® 640XA MMC Aluminum - Silicon Carbide Metal Matrix Composite, T7, Billet
Categories:	Metal; Metal Matrix Composite; Nonferrous Metal; Aluminum Alloy
Material Notes:	SupremEX® 640XA MMC is a high quality, aerospace-grade aluminum alloy (6061B) reinforced with 40 vol.% silicon carbide particles. This composite material is manufactured via powder metallurgy using a mechanical alloying process to ensure a homogeneous reinforcement distribution, providing a refined grain structure and enhanced mechanical properties. SupremEX 640XA MMC is heat treatable, offering high strength and modulus with a CTE match to nickel plating (13 ppm/°C). This material is excellent for lightweight, high-stability structural applications. Designation: 6061B/SiC/40p (3 µm). Benefits Weight saving Static strength comparable to high-strength Al alloys Exceptional specific stiffness for increased component stiffness High fatigue resistance Refined, homogeneous and stable microstructure Excellent hardness, wear resistance and low friction characteristics Good machinability using high-speed machining techniques Superior thermal stability, with CTE match to Ni plating Information provided by Materion.
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Physical Properties	Original Value	Comments

Density	2.90 g/cc

Mechanical Properties	Original Value	Comments
Tensile Strength, Ultimate	66.7 ksi
Tensile Strength, Yield	56.6 ksi @Strain 0.200 %
Elongation at Break	1.20 %
Modulus of Elasticity	140 GPa
Poissons Ratio	0.300
Shear Modulus	54.0 GPa	Calculated

Thermal Properties	Original Value	Comments
CTE, linear	7.20 µin/in-°F
Specific Heat Capacity	0.820 J/g-°C
Thermal Conductivity	150 W/m-K
Solidus	570 °C

Descriptive Properties
Specific Stiffness	48 GPa/g/cm3

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NBB9113j / 323542

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