Copied Porcelain Streak Plate
Porcelain Streak Plate
Porcelain streak plate, unglazed, for use in hardness testing of rocks and minerals.Thermal Shock Resistance - average coefficient of expansion from 20°C to 200°C is 3.56 x 10-5, gradually increasing to 4.69 x 10-5 at 1050°C. Every batch of porcelain is heat tested in our factory.Glaze - No softening occurs up to 1000°C, and it is extremely white.Resistance to Chemical Action - Resistance to acids and alkalies is excellent, except for hydrofluoric acid. ... Show More Show Less
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