METALLIC COMPOSITES FOR THE 21st CENTURY

The Capabilities


Stir - Casting

MC-21 utilizes relatively simple equipment to mix ceramic particles into various aluminum alloys, creating a homogeneous and dispersed micro-structure.  Molten MMC can be cast into foundry ingots or rolling slabs for further processing.  Licensing is available for companies wanting to install MC-21 capabilities for high volume production on site.

  
   
 
  
   
 
    

 

Casting

Using ingots of MC-21 MMC, complex parts can be cast using either die casting or investment casting techniques.  Casting allows for higher volume fraction MMC's, resulting in components with up to 45 volume percent SiC reinforcement.  Contact us concerning questions on how best to re-melt and cast MC-21 ingots.  Click here for examples of the complexity achievable using MC-21 MMC.

  
   
 
  
   
 
  
   

Rolled Sheet and Plate

With 30,000 square feet (~2800 m2) of manufacturing space, MC-21 has installed equipment capable of rolling up to 14 inch wide sheets ranging from as thin as 0.02 inches (0.5mm) to as thick as 0.5 inches (12.7mm).  With MC-21's proprietary process, volume fractions has high as 30% can be rolled into sheets, allowing for extremely high volume, low-cost production of value-added material.
  
   
 
  
   
 
  
   
 
  
   
 
  
   

Stamping / Coining

MC-21's MMC sheets can be stamped into final parts quickly and efficiently.  Whether blanked or coined, products up to 30 volume percent can be produced to very tight tolerances very cost effectively.  Millions of parts are being produced annually from MC-21's MMC30 material.

Table of Properties

   MMC 30
 MMC 45
Aluminum
 Copper  Al-SiC Competition
  CuMo
  CuW
 SiC (vol %)
 30
45
0
0
63
0
0
 Products Sheet/Cast
Cast
Sheet/Cast
Sheet
Cast
Sheet
Sheet
 Density (g/cc)
 2.80
2.90
2.70
8.90
3.10
9.66
16.3
CTE (ppm) 25-150 C
14.5
10.5
22.5
17.5
  8.5
 10.3
7.0
Thermal Conductivity (W/mK)
175
 180
170
390
190
230
195
Specific Modulus (Stiffness)
40
60
27
15
60
tbd
tbd
Relative Price
$
$
¼$
$
$$$
$$$
$$$
    values listed in this table are typical values for comparison purposes only