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Ultracal 30 50 Lb bag (220146)
ULTRACAL® 30 was designed to give the pattern making industry the ultimate in a gypsum cement-tooling medium. Packaged in 50 Lb bag.

ULTRACAL 30 Gypsum Cement is a super-strength gypsum cement recommended where extreme accuracy and greater surface hardness are required, as in duplicator models. ULTRACAL® 30 cement has the lowest expansion of any rapid-setting gypsum cement available. Has a gradual set and long period of plasticity. Ideal for splash-casting molds and models for phenolic, polyester and epoxy resins.

Technical Properties:
Use Consistency (38 parts of water by weight per 100 parts plaster)
Dry Compressive Strength 6,000 psi
Maximum Setting Expansion 0.080%
Density Wet 115.0 lb/ft3
Density Dry 99.0 lb/ft3
Set Time (Hand Mix) 25 - 35 min.