Hard Rock

High-Strength, High-Expansion Die Stone

ISO Type 5

The material is compatible with all types of impression materials. Its high expansion makes it especially suited for polyvinyl or polyether impression materials. This material has a creamy and thixotropic consistency for good flow under vibration, yet is very stackable. Its extended working time facilitates multiple pours. The stone has a smooth non-brittle surface so dies trim easily without chipping.

Physical Properties

Water/Powder Ratio
21 mL/100 g
Working Time
6 - 8 minutes
Setting Time
15 minutes
Setting Expansion
Compressive Strength, Wet (1hr.)
7,000 psi (49 MPa)
Compressive Strength, Dry (48 hrs.)
15,000 psi (104 MPa)
Item No. Description
330001 Hard Rock Aqua 33#/15KG
32077 Hard Rock Green 120 - 70 g Package
330002 Hard Rock Green 33#/15KG
330003 Hard Rock Ivory 33#/15KG