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These test methods cover the physical testing of gypsum panel products. 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; (6) nominal thickness; (7) recessed- or tapered-edge depth; (8) width; (9) length; (10) water resistance of core-treated water repellant gypsum panel products; and (11) surface water resistance of gypsum panel products with water-repellant surfaces. For use in these test methods, a sample shall consist of gypsum panel products. Flexural properties of gypsum panel products are evaluated by supporting the specimen near the ends and applying a transverse load midway between the supports. The core, end, and edge hardness of gypsum panel products is evaluated by determining the force required to push a steel punch into the area of test. The ability of gypsum panel products to resist nail pull-through is evaluated by determining the loaded required to push a standard nail head through the product. The humidified deflection of gypsum panel products is evaluated by supporting a specimen that has been cut with the long dimension perpendicular to the machine detection, supported horizontally, and subjected to high humidity.
This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
Flexural Strength (Method A)
Core, End and Edge Hardness (Method A)
Nail Pull Resistance (Method A)
Flexural Strength (Method B)
Core, End and Edge Hardness (Method B)
Nail Pull Resistance (Method B)
Recessed- or Tapered Edge Depth
Water Resistance of Core-Treated Water-Repellent
Surface Water Resistance of Gypsum Panel Products
1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.4 The text of these test methods references notes and footnotes that provide explanatory material. These notes and footnotes, excluding those in tables and figures, shall not be considered as requirements of these test methods.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
Other StandardsTAPPIT441 Water Absorptiveness of Sized (Non-Bibulous) Paper, Paperboard, and Corrugated Fiberboard (Cobb Test)
C11 Terminology Relating to Gypsum and Related Building Materials and Systems
E4 Practices for Force Verification of Testing Machines
E177 Practice for Use of the Terms Precision and Bias in ASTM Test Methods
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
ICS Number Code 91.060.10 (Walls. Partitions. Facades); 91.100.10 (Cement. Gypsum. Lime. Mortar)
UNSPSC Code 30161500(Wall finishing materials)
ASTM C473-12, Standard Test Methods for Physical Testing of Gypsum Panel Products, ASTM International, West Conshohocken, PA, 2012, www.astm.orgBack to Top