ASTM C473 Testing Machine of Gypsum Panel Products (Flexural strength, Nail pull resistance etc.,) 

ASTM C473-19 Standard Test Methods for Physical Testing of Gypsum Panel Products

Gypsum panels typically consist of a core made of gypsum, which is a soft sulfate mineral, sandwiched between two layers of specialized paper. The gypsum core provides the panel with fire resistance, sound insulation and durability.  

The test methos appear in the following order: 

(1) flexural strength (Method A); 

(2) core, end, and edge hardness (Method A); 

(3) nail pull resistance (Method A); 

(4) humidified deflection; 

(5) end squareness; 

(10) water resistance of core-treated water repellant gypsum panel products;

(11) surface water resistance of gypsum panel products with water-repellant surfaces.

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