Wacker CENUSIL® M 830 A/B – Translucent Addition-Cure Silicone for Concrete Moulds & Reproduction Moulds
Wacker CENUSIL® M 830 A/B – Translucent Addition-Cure Silicone for Concrete Moulds & Reproduction Moulds
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Translucent addition-cure silicone for concrete moulds and reproduction moulds
Wacker CENUSIL® M 830 A/B is a pourable, addition-curing (platinum) two-component silicone rubber that cures at room temperature without shrinkage. Both components are translucent with a viscosity of 8,000 mPa·s, so the silicone flows well and de-airs itself. You mix 1:1 and have 60 minutes pot life at 23 °C. You can demould after 14 to 16 hours. The cured rubber has a hardness of Shore A 26, a tensile strength of 5 N/mm² and 500 % elongation at break.
Key benefits
- Shore A 26: a versatile hardness for most moulds.
- Mix ratio 1:1: easy to weigh and mix.
- Shrink-free cure: dimensionally accurate moulds, even at large volumes.
- Good flow and self-de-airing: 8,000 mPa·s per component.
- Translucent: you can see the model through the mould when cutting it open.
Typical applications
- ✓ Moulds for concrete and artificial stone
- ✓ Reproduction moulds for casting resins and plaster
- ✓ Production moulds for small and medium runs
Application
- Stir component A and component B separately and thoroughly.
- Weigh A and B in a 1:1 ratio and mix slowly and carefully until homogeneous.
- De-air the mixture, preferably in a vacuum chamber.
- Pour within the 60-minute pot life (23 °C).
- Demould after 14 to 16 hours at 23 °C. Heat speeds up the cure.
⚠️ Inhibition with addition-cure silicones
The platinum catalyst is in component A. Curing can be inhibited by sulphur, nitrogen, amine compounds and metal salts. These are found in, among other things, latex gloves, sulphur-containing clay, condensation-cure silicones, some paints and adhesives and certain 3D printing materials. If in doubt, run a small test first.
Points to note
- ✓ Only use components A and B from the same batch number.
- ✓ The expiry date of each batch is on the label. After that date the silicone is not automatically unusable, but check its properties before you use it.
- ✓ This product is intended for the business market and is supplied as a 50 kg set.
Professional support
Looking for a different pack size, or not sure which silicone suits your casting material? Email us at info@siliconesandmore.com and we will be happy to help.
Product Properties
- Hardness26Shore AHardness of the silicone material
- ColorTranslucentColor of the finished product
- Viscosity8000mPa·sViscosity of the uncured silicone
- Density1.05g/cm³Density of the cured material
- Mix ratio1:1Mixing ratio A : B
- Tensile strength5.0MPaMaximum tensile force before breaking
- Elongation at break500%Maximum stretch before breaking
- Pot life60minutesWorking time after mixing
- Cure time900minutesTime until full cure
Component Properties
- Color ATranslucentColor of component A
- Color BTranslucentColor of component B
- Viscosity A8000mPa·sViscosity of component A
- Viscosity B8000mPa·sViscosity of component B
- Density A1.05g/cm³Density of component A
- Density B1.05g/cm³Density of component B
Application
- Silicone type["Addition curing","RTV-2"]Type of silicone or polymer
- Cure speedSlowHow quickly the material can be demoulded
Safety Information
No hazard classification is currently known for this product. Treat it as you would any chemical raw material: work carefully and in a well-ventilated area. Wear protective gloves (not latex, which can inhibit the cure) and eye protection. Avoid contact with skin and eyes and wash your hands after work. Keep the product out of the reach of children. Always consult the supplied safety data sheet (SDS) for full information on hazards, handling, storage and first aid.| 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.