Imerys Clayrac Aluminosilicate – Stucco & Flour for Ceramic Shell Moulds in Art Casting & Investment Casting
Imerys Clayrac Aluminosilicate – Stucco & Flour for Ceramic Shell Moulds in Art Casting & Investment Casting
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Aluminosilicate stucco and flour for the ceramic shell process
Imerys Clayrac is a calcined aluminosilicate (chamotte) made from kaolinitic clay from the Charentes basin in France. You use it as stucco and as flour to build highly refractory and creep-resistant ceramic shell moulds, for example in art casting. Clayrac has a reliable particle size distribution and mineralogy and works in both alcohol- and water-based processes. Depending on the grade, it contains up to 45 % alumina.
Key benefits
- Highly refractory: with high creep resistance, also for steel and titanium alloys.
- Dimensionally accurate: valued for its dimensional accuracy.
- Excellent backup material: according to Imerys very well suited to the backup coats of the shell.
- Consistent quality: reliable particle size distribution and mineralogy.
- Alcohol or water: suitable for both processes.
- Several grain sizes: lets you build the shell more efficiently.
- Easy knock-out: the shell is easy to remove after casting.
Typical applications
- ✓ Ceramic shell moulds for art foundries
- ✓ Investment casting, including steel and titanium alloys
- ✓ Stucco for building up the shell
- ✓ Clayrac P 200 mesh as flour
Processing
- Use Clayrac as stucco when building the shell, or as flour (200 mesh), in an alcohol- or water-based process.
- Choose the right grain size for each coat. Using different grain sizes lets you build the shell more efficiently.
- For slurry composition, drying times and number of coats, follow the instructions for the binder you use.
Points to note
- ✓ Avoid creating dust and work with good extraction.
- ✓ Supplied in 25 kg bags. For larger quantities or delivery outside the Benelux and Germany, request a quotation.
Professional support
Not sure which grain size you need for each coat? Email us at info@siliconesandmore.com and we will be happy to help.
| Type | calcined aluminosilicate (chamotte) |
|---|---|
| Origin | kaolinitic clay, Charentes (France) |
| Alumina content | up to 45 %, depending on grade |
| Grain sizes | F 45 0.1-0.3 mm, F 41 0.2-0.5 mm, F 45 0.5-1 mm, F 45 P 200 mesh (flour) |
| Processes | alcohol- and water-based |
| Packaging | 25 kg bag |
Safety Information
Always work with this mineral powder in a way that keeps dust to a minimum. Avoid creating dust, use extraction and do not inhale the dust. Wear suitable respiratory protection when dust is produced. Wear gloves and eye protection when working with stucco and flour. Consult the safety data sheet (SDS) for full information on hazards, handling, storage and first aid. If you have not received it, email us at info@siliconesandmore.com.| Safety Pictograms | Safety Data Sheets (SDS) |
|---|---|
Required protection (ISO 7010)
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Frequently asked questions
What is the delivery time for my order?
Orders placed and paid on working days are in most cases shipped the same day. Weekend orders are processed on the next working day.
Indicative delivery times: Netherlands usually within 1 working day, Belgium and Germany typically 1–2 working days, other countries depending on destination and carrier. These are guidelines, not guarantees: peak periods, public holidays or carrier delays can have an effect.
What is the return policy?
You have 30 days to return after receipt. Email info@siliconesandmore.com within 30 days of delivery with your name and order number. The full conditions are in our return policy.
How can I track my order?
As soon as your order has shipped, you'll receive a track & trace code by email. It can take up to 24 hours before the code is active.
I have a problem with my order – how do I reach you?
Contact us via our contact page or email info@siliconesandmore.com. We're happy to help you quickly.
Can I order as a business?
Yes. Apply for a business account; we review your application within 3 working days. After that you order while logged in and pay on invoice, with payment terms of 14 days after delivery.
EU businesses outside the Netherlands with a valid VAT number order with VAT reverse-charged (0%, intra-community supply). The VAT number is stored in your business account; it cannot be added to an order after it has been placed.