Alpha Gypsum Binder - Fine White Powder, 1.5 To 850 Kilograms, Environmentally Friendly Material, High Strength For Molds And Models

We manufacture, export and supply Alpha Gypsum Binder in Samara, Samara, Russia.

DESCRIPTION
Gypsum binder (alpha- hemihydrate of calcium sulfate CaSO4 * 0.5 H2O) is produced from natural gypsum stone and is a white fine powder obtained by grinding of natural gypsum stone with further heat treating it in an autoclave, followed by milling and separation.

Alternative names are alpha gypsum, technical gypsum, and high-strength gypsum.
Environmentally friendly material.

APPLICATION
Production of molds and models in porcelain and ceramic industry, and mechanic engineering;
Production of dry construction mixes;
Construction of fire partitions;
Plugging of wells in oil industry;
Casting of molds for parts in metallurgy and mechanic engineering.

TECHNICAL SPECIFICATIONS^
Divergence from the net mass in accordance with GOST 26871 A 1kg
Produced according to TU 21 RSFSR-153-90, MOD. 15
Water consumption for paste of standard consistency: Not more than 41% of weight of the binder
Setting time of standard consistency:
Start (loss of solution mobility) - no earlier than 4.5 minutes
Finish (complete solution hardening) - not later than 20 minutes
Beating rate: The maximum residue on a sieve with a mesh size of 0.2 mm in clear - not more than 1%
Breaking strength of sample bars aged of 2 hours:
Under bending - not less than 6 MPa.
Under compression - not less than 16 MPa
Content of metal impurities in the binder: Not more than 10 mg/kg