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Specific Gravity - ASTM D792 Plastic Test Standard

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Specific Gravity - ASTM D792

The ratio of material density (mass per unit volume) at 23°C to the density of gas-free distilled water at 23°C. Specific gravity can be converted to density (g/cm³) by multiplying specific gravity by 0.9975.

Two procedures are used for specific gravity testing.

Method	Description	Calculation
A	Testing in water	(apparent mass in air) / (apparent mass in water)
B	Testing in liquids other than water	(apparent mass in air) * (specific gravity of liquid) / (apparent mass in liquid)

Similar Standards

ASTM D1505
ASTM D4883
ISO 1183

Property information for specific grades of resin are available in the Prospector Plastics Database.