Details
A super hard, non-brittle, accurate, natural gypsum, type 4 die stone • High strength and low expansion • Flows smoothly and stacks well • Water to powder ratio: 22ml / 100g • Working time: 7-8 mins • Initial Set Time: 11-13 mins • Expansion rate: 0.09% after 2 hours • Compressive strength: 54 MPa after 1 hour and 80 MPa after 24 hours
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