DWA-USA, the global leader for Aluminum
Metal-Matrix-Composites for Lighter Weight Designs

6092/SiC/25p Aluminum Metal-Matrix-Composite (Al MMC) is an emerging material for helicopter gearbox bearing liners. Its combination of enhanced strength and Titanium-equivalent stiffness, along with high hardness and moderately low CTE cannot be matched by monolithic aluminum alloys.

6092/SiC/25p is a powder metallurgy Al MMC comprised of AA6092 aluminum and 25 Vol% Silicon Carbide particles. It is available in vacuum-hot-pressed billet, extruded, forged and sheet product forms.

  • Titanium matching elastic modulus
  • Elevated Yield and Ultimate Tensile Strength
  • Excellent wear resistance
Units:
Eng

TYPICAL AND MINIMUM MECHANICAL PROPERTIES FOR FORGINGS, EXTRUSION AND SHEET

6092/SiC/25p-T6
Density= 0.1025 lb/in3 
F, ty
ksi
F, tu
ksi
elong.
%
Die Forging, 10in Typical L 62 72 4
Seamless Tube Extrusion, 11in Typical L 57 69 4
Sheet, 0.100in Typical L, LT 62 71 4
All Forms Minimum L 50 60 3
Notes:
1) Young's Modulus is typically 16.2 msi.
2) Coefficient-of-Thermal-Expansion (CTE) is typically 8.5 ppm/°F.
3) Typical Rockwell B scale hardness is 83-85.
Data is representative for 1 inch maximum section thickness during heat treatment. Mechanical properties will be dependent on the Al MMC material system, product form, geometry and heat treatment method.
Si

TYPICAL AND MINIMUM MECHANICAL PROPERTIES FOR FORGINGS, EXTRUSION AND SHEET

6092/SiC/25p-T6
Density= 2.84 g/cm3
F, ty
MPa
F, tu
MPa
elong.
%
Die Forging, 250mm Typical L 430 495 4
Seamless Tube Extrusion, 279mm Typical L 391 477 4
Sheet, 2.5mm Typical L, LT 427 488 4
All Forms Minimum L 345 414 3
Notes:
1) Young's Modulus is typically 112 GPa.
2) Coefficient-of-Thermal-Expansion (CTE) is typically 15.3 ppm/°C.
3) Typical Rockwell B scale hardness is 83-85.
Data is representative for 25 mm maximum section thickness during heat treatment. Mechanical properties will be dependent on the Al MMC material system, product form, geometry and heat treatment method.

 

 

MATRIX ALLOY CHEMICAL COMPOSITION FOR 6092/SiC/25p

6092/SiC/25p
Density= 0.1025 lb/in3 (2.84 g/cm3)
Al Cu Mg Si Fe Zn Ti Ni Cr Mn O Other,
Each
Others,
Total
Bal 0.7-
1.0
0.8-
1.2
0.40-
0.8
0.30
max
0.25
max
0.15
max
-- 0.15
max
0.15
max
0.050-
0.50
0.05
max
0.15
max
Notes:
1) Compositional limits shown as weight percent (wt%).
2) Silicon carbide particle content shall be maintained at 25 ±1.0 Vol%.
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Fielded Applications

DWA-USA specializes in new aluminum-based powder metallurgy materials and applications development. We serve our customers throughout the entire development cycle, whether it be an upgrade to an existing design or starting from the ground up. Our track record for transitioning prototyping efforts to real world serial production is unparalleled.

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Density Adjusted Properties of Aluminum MMCs Compared to Steel, Titanium and Aluminum

One of the clear advantages of Al MMCs compared to conventional metallic materials is greatly enhanced strength and stiffness. These property gains are achieved without impacting material density, so the specific properties of Al MMC are dramatically increased. Al MMCs are also isotropic composite materials. Their design space is not dependent on reinforcement orientation.

DWA Aluminum Composites

Aluminum Metal-Matrix-Composites Manufacturing

The Al MMC manufacturing process can be divided into three elements- primary processing, secondary processing and finishing. Unlike other composite materials, after primary processing of the billet, Al MMCs offer a high level of “fit, form and function” when inserted into the industrial manufacturing stream, making use of conventional facilities and equipment.

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