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Reaction Bonded Silicon Carbide
SCProbond™ R
SCProbond™ R is SCP's reaction-bonded silicon carbide engineered for demanding applications involving sliding abrasion, corrosive environments, high temperatures, and tight dimensional requirements.
Overview
Built for Demanding Applications
SCProbond™ R is formulated for extreme service conditions where high-temperature strength, low porosity, thermal shock resistance, and resistance to sliding abrasion are important.
Its reaction-bonded structure provides near-zero apparent porosity and minimal dimensional change during firing, making SCProbond™ R well suited for precision components and complex geometries where as-fired dimensional stability matters.
SCProbond™ R is particularly suited to applications involving heavy solid-containing slurries, abrasive material flow, corrosive environments, and elevated operating temperatures.
Looking for a different silicon carbide bond type? See SCProbond™ TW, SCProbond™ N, or SCProbond™ TN for nitride-bonded options.
Bond Type
Reaction Bonded Silicon Carbide
Density
2.90 - 3.10 g/cc (0.105 - 0.112 lb/in³)
Max Use Temp
2,480 - 2,516°F (1,360 - 1,380°C)*
Thermal Shock
Excellent
Coefficient of Thermal Expansion @ 1,200°C
4.5 - 5.99 × 10⁻⁶/°C
Wall range
Application Dependent
Thermal Conductivity
45 W/m·K
C704 Abrasion Loss (volumetric)
0.84 - 1.01 cc
apparent Porosity
<0.1%
Modulus of Rupture
37,700 - 42,060 psi (260 - 290 MPa)
Technical data note: Physical properties shown are typical values. Actual properties may vary depending on manufacturing and curing conditions.
Performance
Why Choose SCProbond™ R for Demanding Components?
Sliding Abrasion Resistance
SCProbond™ R is formulated for demanding sliding-abrasion applications, including service involving heavy solid-containing slurries. Its ASTM C704 volumetric abrasion loss is 0.84 - 1.01 cc.
Near-Zero Porosity
With apparent porosity below 0.1%, SCProbond™ R provides a highly dense structure that can help limit penetration and degradation in demanding environments.
High-Temperature Performance
SCProbond™ R maintains high flexural strength with a maximum safe operating temperature of 2,480 - 2,516°F (1,360 - 1,380°C), dependent upon atmosphere.
Thermal Shock Resistance
The combination of low thermal expansion and high thermal conductivity contributes to good thermal shock resistance, making SCProbond™ R suitable for components exposed to demanding temperature changes.
Components Manufactured
SCProbond™ R in the Field
SCProbond™ R is used for components exposed to abrasive flow, slurry service, corrosive environments, and elevated temperatures.
Component Reference
Liners
Venturi sections
Chutes
Cyclones
Molten metal pump protective sleeves
Ash handling sweeps
Coal handling components
Impellers
Coal preparation applications
Centrifuge components
Spigot liners
Throat liners
Spray guards
Spray Nozzles
Custom Geometry Available
SCProbond™ R can be manufactured for custom component geometries where abrasion resistance, chemical resistance, temperature capability, or dimensional requirements make reaction-bonded silicon carbide a suitable choice.
Our team can evaluate your drawing, operating conditions, material exposure, and manufacturing requirements to determine whether SCProbond™ R is appropriate for the application.
Material performance reference
Why Does Near-Zero Porosity Matter?
SCProbond™ R has an apparent porosity of less than 0.1%, reflecting the dense structure produced by its reaction-bonded manufacturing process. For applications involving corrosive chemicals, abrasive slurries, or continuous material flow, a dense ceramic structure can help limit penetration into the component and support resistance to mechanical and chemical degradation.
Combined with 45 W/m·K thermal conductivity and a relatively low coefficient of thermal expansion, this dense structure contributes to SCProbond™ R's ability to perform in demanding thermal and mechanical environments.
What Does This Mean for Your Application?
When component life depends on resisting both material attack and mechanical wear, porosity can be an important part of the material-selection decision. SCProbond™ R gives engineers a reaction-bonded silicon carbide option with near-zero apparent porosity, high thermal conductivity, and strong abrasion performance.
Common Questions
Frequently Asked Questions About SCProbond™ R
Explore the Full Line
Other SCProbond™ Grades
Not sure which SCProbond™ grade is right for your application? Compare the options below.
Pricing Notes
Pricing Is Quoted Per Project
SCProbond™ R pricing depends on part geometry, wall thickness, tolerance requirements, order volume, and whether tooling already exists. Manufacturability, aspect ratio, and overall part dimensions all factor into final cost.
Repeat orders on existing tooling are typically the most cost-effective path since tooling costs are already amortized. Send us your drawing for an accurate, project-specific quote.
Need a Reaction-Bonded Silicon Carbide Component?
Whether you're replacing an existing wear component, evaluating a material change, or developing a new component for abrasive, corrosive, or high-temperature service, SCP can help determine whether SCProbond™ R is the right material for your application.