ASTM C473-03

Standard Test Methods for Physical Testing of Gypsum Panel Products

SCOPE
1.1 These test methods cover the physical testing of gypsum panel products.
1.2 The test methods appear in the following order:SectionFlexural Strength (Method A)7Core, End and Edge Hardness (Method A)8Nail Pull Resistance (Method A)9Flexural Strength (Method B)11Core, End and Edge Hardness (Method B)12Nail Pull Resistance (Method B)13Humidified Deflection14End Squareness15Nominal Thickness16Recessed- or Tapered Edge Depth17Width18Length19Water Resistance of Core-Treated Water-Repellent Gypsum Panel Products20 Surface Water Resistance of Gypsum Panel Products with Water-Repellent Surfaces21
1.3 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.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

General Information

• Status: Historical
• Publication Date: 09-Jun-2003
• ICS: 91.060.10 - Walls. Partitions. Facades
• ICS: 91.100.10 - Cement. Gypsum. Lime. Mortar
• Technical Committee: C11 - Gypsum and Related Building Materials and Systems
• Drafting Committee: C11.01 - Specifications and Test Methods for Gypsum Products

Relations

• Replaces: ASTM C473-00 - Standard Test Methods for Physical Testing of Gypsum Panel Products
• Effective Date: 10-Jun-2003
• Replaced By: ASTM C473-05 - Standard Test Methods for Physical Testing of Gypsum Panel Products
• Effective Date: 01-Dec-2005
• Referred By: ASTM C1178/C1178M-18 - Standard Specification for Coated Glass Mat Water-Resistant Gypsum Backing Panel
• Effective Date: 10-Jun-2003
• Referred By: ASTM C1629/C1629M-23 - Standard Classification for Abuse-Resistant Nondecorated Interior Gypsum Panel Products and Fiber-Reinforced Cement Panels
• Effective Date: 10-Jun-2003
• Referred By: ASTM C11-23 - Standard Terminology Relating to Gypsum and Related Building Materials and Systems
• Effective Date: 10-Jun-2003
• Referred By: ASTM C1355/C1355M-96(2020) - Standard Specification for Glass Fiber Reinforced Gypsum Composites
• Effective Date: 10-Jun-2003
• Referred By: ASTM C1789-14(2018) - Standard Test Method for Calibration of Hand-Held Moisture Meters on Gypsum Panels
• Effective Date: 10-Jun-2003
• Referred By: ASTM C587-04(2018) - Standard Specification for Gypsum Veneer Plaster
• Effective Date: 10-Jun-2003
• Referred By: ASTM C318/C318M-13(2018) - Standard Specification for Gypsum Formboard
• Effective Date: 10-Jun-2003
• Referred By: ASTM C1177/C1177M-17 - Standard Specification for Glass Mat Gypsum Substrate for Use as Sheathing
• Effective Date: 10-Jun-2003
• Referred By: ASTM C1658/C1658M-19e1 - Standard Specification for Glass Mat Gypsum Panels
• Effective Date: 10-Jun-2003
• Referred By: ASTM C1278/C1278M-17 - Standard Specification for Fiber-Reinforced Gypsum Panel
• Effective Date: 10-Jun-2003
• Referred By: ASTM C1396/C1396M-17 - Standard Specification for Gypsum Board
• Effective Date: 10-Jun-2003
• Referred By: ASTM C1766-15(2019) - Standard Specification for Factory-Laminated Gypsum Panel Products
• Effective Date: 10-Jun-2003

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: C 473 – 03
Standard Test Methods for
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Physical Testing of Gypsum Panel Products
This standard is issued under the fixed designation C 473; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
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1. Scope* lous Paper and Paperboard (Cobb Test)
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E 4 Practices for Force Verification of Testing Machines
1.1 These test methods cover the physical testing of gypsum
panel products.
3. Terminology
1.2 The test methods appear in the following order:
3.1 Definitions used in these test methods are in accordance
Section
with Terminology C 11.
Flexural Strength (Method A) 7
Core, End and Edge Hardness (Method A) 8
3.2 Definitions of Terms Specific to This Standard:
Nail Pull Resistance (Method A) 9
3.2.1 edge, n—the paper-bound edge, or long edge, as
Flexural Strength (Method B) 11
manufactured.
Core, End and Edge Hardness (Method B) 12
Nail Pull Resistance (Method B) 13
3.2.2 ends, n—the end perpendicular to the paper-bound
Humidified Deflection 14
edge or long edge.
End Squareness 15
Nominal Thickness 16
4. Sampling
Recessed- or Tapered Edge Depth 17
Width 18
4.1 For use in these test methods, a sample shall consist of
Length 19
not less than 0.25 % of the number of gypsum panel products
Water Resistance of Core-Treated Water-Repellent
Gypsum Panel Products 20
in a shipment, but not less than three gypsum panel products.
Surface Water Resistance of Gypsum Panel Products
Test specimens shall be taken from the sample lot as indicated
with Water-Repellent Surfaces 21
in each method.
1.3 The text of these test methods references notes and
footnotes that provide explanatory material. These notes and 5. Conditioning
footnotes, excluding those in tables and figures, shall not be
5.1 Conditionspecimenstoconstantweightatatemperature
considered as requirements of these test methods.
of 85 6 15°F (29.5 6 8.5°C) and relative humidity of 50 6
1.4 This standard does not purport to address all of the
2 % (Note 1). Test specimens individually after constant
safety concerns, if any, associated with its use. It is the
weight is reached and within 10 min upon removal from the
responsibility of the user of this standard to establish appro-
conditioning chamber.
priate safety and health practices and determine the applica-
NOTE 1—Laboratory test results indicated that conditioning tempera-
bility of regulatory limitations prior to use.
tures may range from 70 to 100°F (21 to 38°C) without significantly
affecting the results. However, relative humidity is critical. This is the
2. Referenced Documents
reason for testing specimens within 10 min upon removal from the
2.1 ASTM Standards:
conditioning chamber.
C 11 Terminology Relating to Gypsum and Related Build-
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Method A—Constant Rate of Loading
ing Materials and Systems
D 3285 Test Method for WaterAbsorptiveness of Nonbibu-
INTRODUCTION
The following procedures are applicable to so-called “shot
machines” that utilize lead or steel shot that applies a load to
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These test methods are under the jurisdiction of ASTM Committee C11 on
the specimen at a constant stress rate or any other device that
Gypsum and Related Building Materials and Systems and are the direct responsi-
applies the load at a constant stress rate.
bility of Subcommittee C11.01 on Specifications and Test Methods for Gypsum
Products.
Current edition approved June 10, 2003. Published August 2003. Originally
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approved in 1961. Last previous edition approved in 2000 as C 473 – 00. Annual Book of ASTM Standards, Vol 15.09.
2 4
Annual Book of ASTM Standards, Vol 04.01. Annual Book of ASTM Standards, Vol 03.01.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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C473–03
6. Apparatus—Method A and two having the 16-in. dimension perpendicular to the edge.
Cut the specimens not less than 4 in. (102 mm) away from the
6.1 Testing Machine—Apply the test load at a uniform rate
ends and edges of the gypsum panel product except where the
of 1 lbf/s (4.45 N/s) 610 %. Apply the load with a device
product is 24-in. or less in width, where it is impossible to do
independent of manual control of the rate of loading during an
so.
individual sample test (see Fig. 1). The deformation of the
7.5.2 Condition specimens in accordance with Section 5.
specimen controls the cross head speed.
7.6 Procedure:
7. Flexural Strength (Method A)
7.6.1 Use the apparatus in 7.3, supporting each specimen
centrally on the fixed parallel bearings, 14-in. (356 mm) on
7.1 S
...