Customised Grades of RCS for Critical Foundry Applications
Our premium brand engineered for shell mould and core applications across automotive and heavy engineering castings. Every grade formulated with purpose, every batch tested to specification.
Get a QuotePremium shell sand engineered grain by grain
Resin Coated Sand (RCS) is the foundational material for shell core and shell mould making — where dimensional accuracy, surface finish, and defect-free production are non-negotiable. Samarth RCS is produced from carefully selected base sands coated with high-performance phenol formaldehyde novolac resins under precise temperature and time controls.
With over 30 years of combined foundry and coating expertise, our team understands what happens inside the core box. We engineer every grade to match the exact demands of the application — whether it is a thin-walled water jacket, a complex manifold core, or a precision magnet casting.
Our coating processes — both warm coating and hot coating — are supported by thermal reclamation infrastructure, internationally sourced novolac resins, and a rigorous in-process quality system that covers every step from raw material receipt to final dispatch.
The right grade for every casting challenge
Each grade in our portfolio is formulated to address a specific foundry problem — from surface defects and gas porosity to dimensional variation and knockout difficulty.
| Grade / Type | Key Benefit | Best Application |
|---|---|---|
|
VFT Range
|
Eliminates fusion & metal penetration defects | Water jacket cores, cylinder heads & blocks |
|
High Cold Transverse Strength
|
Reduced mould dilation, better dimensional accuracy | Complex geometries, precision castings |
|
High Permeability
|
Faster gas evolution, fewer gas-related defects | CI cylinder blocks & heads |
|
Controlled Grain Size/Shape
|
Superior surface finish | Shell moulded castings, small components |
|
Extraordinary Reproducibility
|
Consistent fine edges and marks | Magnets, copper alloys, small components |
|
Better Collapsibility
|
Faster knockout during de-coring | Aluminium gravity die and sand castings |
|
Controlled Build-up
|
Reduced core cost, improved de-coring | Aluminium manifold castings |
ISO 9001:2015 certified · 30 years of foundry expertise · every grade validated in our own in-house foundry before it reaches you.
End-to-end quality assurance
Testing is built into every stage — from incoming raw materials to the final packed product. Nothing leaves without passing specification.
Base Sand Testing
- Purity & mineralogy
- Grain shape (roundness & angularity)
- AFS grain fineness number
- Grain size distribution (sieve analysis)
- Clay content
- Chloride & moisture content
Resin & Hardener Testing
- Solid content
- Specific gravity
- Viscosity
- Refractive index
Final RCS Testing
- Hot tensile strength
- Cold transverse strength
- Scratch hardness
- Loss on ignition (LOI)
- Gas evolution
- Peel back & stick point
Frequently asked questions
Common questions from foundry teams evaluating Samarth RCS for the first time.
What differentiates Samarth RCS from other suppliers?
Premium inputs, in-house testing, and defect diagnostic support set us apart. We do not just deliver product — we partner with your team to identify root causes and engineer the right grade for your specific application and casting defect profile.
Why does Samarth RCS carry a premium pricing?
We maintain the highest quality standards in raw material selection, process controls, and QA. The cost of defects — scrap, rework, downtime — is multiples of any premium on the sand itself. Our customers consistently find that Samarth RCS pays for itself.
What is the expected clay content in your base sand?
Our standard specification targets clay content below 0.5%. With our full sand preparation equipment and washing process, we routinely achieve below 0.2% clay content — critical for consistent resin bonding and strength.
What are typical lead times for bulk trials and repeat orders?
For a first bulk trial, we typically dispatch within 3–4 working days of order confirmation. For established repeat orders, delivery is within 48 hours. Our production planning is built around customer schedules.
How do you prevent grade mix-ups between different RCS grades?
Batch traceability is embedded in our QA system, and all grades are colour-coded at dispatch — red packaging, green packaging, or standard — to ensure correct identification at goods receipt and in your core shop.
How are price changes communicated and handled?
We operate on a transparent escalation clause: if input material costs vary by more than 3%, we provide 15 days advance notice before any price revision takes effect. No surprises to your production budget.
Ready to find the right RCS grade for your foundry?
Our technical team works directly with your production to diagnose defects, select the optimal grade, and validate results in your process.
Let's find the right RCS grade for your process
Describe your application, current defects, or quantity requirements — our foundry specialists respond within one business day.
Maharashtra, India