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Characteristics:

  • Low Density
  • High Strength to Weight Ratio
  • High Surface area to Volume Ratio
  • isotropic load response
  • controlled stress-strain Characteristics

General Properties

Density 4-30+%
Max Compression Up to 25x
PPI Available 5, 10, 20, 30, 45, 60, 80, 100
Largest starting material sizes: 8"x12"x24"*

*Uncompressed

Click on a property for more info

Data Sheet

Why is Duocel® silicon carbide foam so special?

The matrix of cells and ligaments is completely repeatable, regular, and uniform throughout the entirety of the material. Duocel® silicon carbide (SiC) foam is a rigid, highly porous and permeable structure and has a controlled density of metal per unit volume.

 

Physical Characteristics of Duocel® Silicon Carbide Foam* (8% Nominal Density)

Compression Strength 200 psi (1.38 MPa)
Flexural Strength 400 psi (2.76 MPa)
Shear Strength 100 psi (.69 MPa)
Mohs Hardness 9 Mohs  
Young’s Modulus 4 × 105 psi (2.76 GPa)
Knoop Hardness (100gm) 2500  
Poisson’s Ratio 0.22  
Bulk Thermal Conductivity
· 482°F (250°C)  
3.05 BTU/ft · hr · °F (5.28 W/m · °C)
· 1832°F (1000°C)  
1.07 BTU/ft · hr · °F (1.85 W/m · °C)
· 2642°F (1450°C)  
.77 BTU/ft · hr · °F (1.34 W/m · °C)
Coefficient of Thermal Expansion
· Room Temperature   
1.22 × 10-6 in/in · °F (2.2 × 10-6 m/m · °C)
· 392°F (200°C)  
2.06 × 10-6 in/in · °F (3.7 × 10-6m/m · °C)
· 932°F (500°C)  
2.56 × 10-6 in/in · °F (4.6 × 10-6 m/m · °C)
· 1292°F (700°C)  
2.72 × 10-6 in/in · °F (4.9 × 10-6 m/m · °C)
Bulk Resistivity at Room Temperature · 4 × 105 ohm · in (1.016 × 105 ohm · cm)
Sublimation Point 4892°F (2700°C)
Max Continuous Use (Inert) 3992°F  (2200°C)
Oxidation Resistance 3002°F (1650°C)

*these values were derived from small samples where edge effects influenced the results. Larger samples having a minimum of 10-15 bubble diameter produce more general test results which are in better compliance with the equations.

 

More Information:

Thermal Conductivity:

Duocel® silicon carbide (SiC) foam is a great thermal conductor at lower temperatures.

Please visit our thermal conductivity page in the technical data section for a more in depth explanation of how materials and properties effects the thermal conductivity of Duocel® foam.

Electrical Conductivity:

Duocel® silicon carbide (SiC) foamcan be used in electrochemical processes that require low electrical and fluid flow resistance. This is in stark contrast to most ceramics, which do not conduct electricity. Duocel® SiC supplements its strength in this type of application with its increased ability to withstand extreme temperatures.

Please visit our electrical conductivity page in the technical data section for a more in depth explanation of how materials and properties effects the electrical conductivity of Duocel® foam.

Strength:
For Duocel® silicon carbide (SiC) foams weight it is exceptionally strong. This strength is also extended to high temperatures. On top of that SiC is is very scratch resists at 9 Mohs.
Stability:
Duocel® silicon carbide (SiC) foam is structurally stable at elevated temperatures. It has a very low coefficient of thermal expansion and is resistant to thermal shock.
Size:

Duocel® silicon carbide (SiC) foam can be made up to 1” thick at 100 PPI. Larger pore sizes can be made larger. Please contact us for more info.

Corrosion resistance:

Duocel® silicon carbide (SiC) foam resists oxidation up to 3002F. SiC also has high resistance to acid corrosion.
It has a hardness that reduces the mechanical wear of the surface of Duocel® SiC foam.

Cost:
Duocel® silicon carbide (SiC) foam is the most expensive material that we manufacture. Cost is dependent upon several factors including quantity of parts, Pores Per Inch, relative density, and tolerances. Prices start at about $20 per cubic inch and can end up as high as $500 per cubic inch.

ERG does not sell foam as a raw bulk material, only as finished end item components.



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