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ALFA PLASTER 30/1

alpha gypsum 30/1high-strength gypsumindustrial casting gypsumceramic mold gypsumshore D 90 gypsumalpha hemihydrate calcium sulfatehard gypsum

ALFA PLASTER 30/1 is an industrial plaster based on high-purity alpha hemihydrate calcium sulfate, possessing superior physical and mechanical properties. Produced through special autoclave processes, this product provides excellent fluidity and a 190 mm spread diameter (Vicat) at a low water/plaster ratio (100/54), enabling the production of dense, smooth, and extremely hard castings. It is specifically formulated for the ceramic industry, precision molding, architectural decoration, and industrial applications requiring high strength.

The product offers optimal workability with an initial setting time of 11 minutes 15 seconds and a final setting time of approximately 30 minutes. With a Shore D 90 surface hardness and a compressive strength reaching 200 kg/cm², it exhibits maximum resistance to impacts, scratches, and abrasion, significantly extending mold life.

Technical Specifications

Consistency (Plaster/Water) 100 / 54
Spread Diameter (Vicat Ring) 190 mm
Initial Setting Time 11 minutes 15 seconds
Final Setting Time 29 minutes 55 seconds
Sieve Residue Above 90 Micron 0.92% (Measured with Alcohol)
Compressive Strength (Constant Weight at 45°C) 90 kg/cm²
Compressive Strength (Maximum) 200 kg/cm²
Water Absorption 24%
Surface Hardness (Shore D) 90

Areas of Use and Advantages

ALFA PLASTER 30/1 is the primary choice for precision casting processes requiring high dimensional stability and low expansion. Ceramic sanitaryware molds, tile molds, decorative cornices, sculpture castings, and medical/dental modeling are among its main areas of use. Thanks to its low water absorption capacity (24%) and smooth surface finish, it maximizes detail reproduction accuracy and increases efficiency in production processes.

Frequently Asked Questions

What is the ideal mixing ratio for ALFA PLASTER 30/1?

To achieve optimum fluidity and high strength values, it is recommended to add 54 parts of water to 100 parts of plaster (100/54).

What is the setting time of the product?

The initial setting time is approximately 11 minutes 15 seconds, and the final setting time is around 29 minutes 55 seconds. These durations provide an ideal working and demolding window for the casting process.

What are the surface hardness and strength values?

The product has a Shore D 90 surface hardness and a high compressive strength that can reach 200 kg/cm². These properties make the plaster extremely durable for industrial molds and parts exposed to abrasion.

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Contact

Contact us for sample and price requests.

Request Quote / Sample / TDS Address: Keresteciler Sanayi Sitesi Saray Mah. 4 Nolu Cad. No: 21 Kahramankazan/ANKARA Email: info@ekvatorkimya.com Tel: +90 312 802 04 88

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