TREMIN® wollastonite is a naturally occurring calcium silicate that is formed from quartz and calcium carbonate at a temperature of about 450°C. There are two aspect ratio grades manufactured which are used in different situations. Blocky particles with a low aspect ratio are marketed under the TREMIN® 283 product range whilst the higher aspect ratio grades are sold under the TREMIN® 939 range.

Due to the overlapping particles they are often used for crack bridging and mechanical reinforcement of polymer systems as well as in coatings.


    • Naturally occuring wollastonite processed by iron-free grinding and air separation.

    • High and low(er) aspect ratio particles.

    • Available in a wide range of particle size distributions and with optional organosilane surface treatments.

    • Low thermal coefficient of expansion: 7 x 10-6/K.


    • Scratch resistance.

    • Increased heat deflection temperature.

    • Excellent reinforcing properties. Improves tear resistance and tensile strength.

    • Anti-corrosion benefits in protective coatings.

Typical Applications

    • Technical plastic components for automotive (PP, PA, PU etc.).

    • Fluoroelastomers e.g. for rotary shaft seals.

    • Friction linings.

    • Powder paints.

    • Anti-corrosion coatings.

Featured grades with technical datasheets

A brief overview of the key grades is given below. You will find the Technical Datasheets (TDS) available for download. If you are looking for a Safety Datasheet (SDS) or Product Safety Information (PSI) then please get in touch by phone or via the contact buttons at the top of the page.

Should you not find what you are looking for here then please note that we have further grades available besides these. One of our Technical Sales team will be happy to help. All of the sales team are technically qualified and will be able to advise you on which product to choose. You can either call us, email us or fill in a quick form at the top of the page to get us to call you (Request a Callback). A sample can be requested via the button at the top of the page as well. Please note that by providing us with your contact details, you are agreeing for us to potentially contact you.

Related brochures & technical literature

You will find some of the key product brochures available for download below. There are more brochures available upon request. If you would like to discuss your enquiry further then please get in contact by phone or by filling in the "Request a Callback" form at the top of the page. Someone from the technical sales team will then call you within 24 hours, to discuss your project further.

Products for Elastomers

Overview brochure for Quarzwerke products going into elastomers. TREMIN® 283 offers excellent dimensional stability, tear resistance and tensile strength improvement.

Products for Elastomers Brochure /




HPF Products for Fluoroelastomers

TREMIN® can have a beneficial impact on cost as well as various mechanical properties when compounded into fluoroelastomer rubbers.

HPF Products for Fluoroelastomers Brochure /




High Performance Fillers for Corrosion Protection

TREMIN® and TREMICA® improve anti-corrosion performance of coating systems.

High Performance Fillers for Corrosion Protection Brochure /