ASTM D648-01

Standard Test Method for Deflection Temperature of Plastics Under Flexural Load in the Edgewise Position

SCOPE
1.1 This test method covers the determination of the temperature at which an arbitrary deformation occurs when specimens are subjected to an arbitrary set of testing conditions.  
1.2 This test method applies to molded and sheet materials available in thicknesses of 3 mm ( 1/8 in.) or greater and which are rigid at normal temperature.
Note 1—Sheet stock less than 3 mm (0.125 in.) but more than 1 mm (0.040 in.) in thickness may be tested by use of a composite sample having a minimum thickness of 3 mm. The laminae must be of uniform stress distribution. One type of composite specimen has been prepared by cementing the ends of the laminae together and then smoothing the edges with sandpaper. The direction of loading shall be perpendicular to the edges of the individual laminae.
1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
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.  
Note 2—The test method described as a Method B of this test method, and test methods Ae and Be of ISO 75-1 and ISO 75-2, 1993 are technically equivalent.

General Information

• Status: Historical
• Publication Date: 09-Aug-2001
• ICS: 83.080.01 - Plastics in general
• Technical Committee: D20 - Plastics
• Drafting Committee: D20.30 - Thermal Properties

Relations

• Replaces: ASTM D648-00a - Standard Test Method for Deflection Temperature of Plastics Under Flexural Load in the Edgewise Position
• Effective Date: 10-Aug-2001
• Replaced By: ASTM D648-04 - Standard Test Method for Deflection Temperature of Plastics Under Flexural Load in the Edgewise Position
• Effective Date: 01-Jul-2004
• Referred By: ASTM F2695-12(2020) - Standard Specification for Ultra-High Molecular Weight Polyethylene Powder Blended With Alpha-Tocopherol (Vitamin E) and Fabricated Forms for Surgical Implant Applications
• Effective Date: 10-Aug-2001
• Referred By: ASTM D4396-22 - Standard Specification for Rigid Poly(Vinyl Chloride) (PVC) and Chlorinated Poly(Vinyl Chloride) (CPVC) Compounds for Plastic Pipe and Fittings Used in Nonpressure Applications
• Effective Date: 10-Aug-2001
• Referred By: ASTM F3510-21 - Standard Guide for Characterizing Fiber-Based Constructs for Tissue-Engineered Medical Products
• Effective Date: 10-Aug-2001
• Referred By: ASTM D6041-23 - Standard Specification for Contact-Molded “Fiberglass” (Glass-Fiber-Reinforced Thermosetting Resin) Corrosion Resistant Pipe and Fittings
• Effective Date: 10-Aug-2001
• Referred By: ASTM D4634-16(2022) - Standard Classification System and Basis for Specification for Styrene-Maleic Anhydride Molding and Extrusion Materials (S/MA)
• Effective Date: 10-Aug-2001
• Referred By: ASTM D4020-18 - Standard Specification for Ultra-High-Molecular-Weight Polyethylene Molding and Extrusion Materials
• Effective Date: 10-Aug-2001
• Referred By: ASTM D5948-05(2020) - Standard Specification for Molding Compounds, Thermosetting
• Effective Date: 10-Aug-2001
• Referred By: ASTM D4673-23 - Standard Classification System for and Basis for Specification for Acrylonitrile–Butadiene–Styrene (ABS) Plastics and Alloys Molding and Extrusion Materials
• Effective Date: 10-Aug-2001
• Referred By: ASTM D5436-15(2020) - Standard Specification for Cast Poly(Methyl Methacrylate) Plastic Rods, Tubes, and Shapes
• Effective Date: 10-Aug-2001
• Referred By: ASTM D2609-21 - Standard Specification for Plastic Insert Fittings for Polyethylene (PE) Plastic Pipe
• Effective Date: 10-Aug-2001
• Referred By: ASTM D635-22 - Standard Test Method for Rate of Burning and/or Extent and Time of Burning of Plastics in a Horizontal Position
• Effective Date: 10-Aug-2001
• Referred By: ASTM D3641-21 - Standard Practice for Injection Molding Test Specimens of Thermoplastic Molding and Extrusion Materials
• Effective Date: 10-Aug-2001
• Referred By: ASTM E2092-18a - Standard Test Method for Distortion Temperature in Three-Point Bending by Thermomechanical Analysis
• Effective Date: 10-Aug-2001

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: D 648 – 01
Standard Test Method for
Deflection Temperature of Plastics Under Flexural Load in
1
the Edgewise Position
This standard is issued under the fixed designation D 648; 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.
This standard has been approved for use by agencies of the Department of Defense.
3
1. Scope * eters from ISO/IEC Standards
D 5947 Test Methods for Physical Dimensions of Solid
1.1 This test method covers the determination of the tem-
4
Plastics Specimens
perature at which an arbitrary deformation occurs when speci-
5
E 1 Specification for ASTM Thermometers
mens are subjected to an arbitrary set of testing conditions.
E 77 Test Method for Inspection and Verification of Ther-
1.2 This test method applies to molded and sheet materials
5
mometers
1
available in thicknesses of 3 mm ( ⁄8in.) or greater and which
E 177 Practice for Use of the Terms Precision and Bias in
are rigid or semirigid at normal temperature.
6
ASTM Test Methods
NOTE 1—Sheet stock less than 3 mm (0.125 in.) but more than 1 mm
E 220 Test Method for Calibration of Thermocouples by
(0.040 in.) in thickness may be tested by use of a composite sample having
5
Comparison Techniques
a minimum thickness of 3 mm. The laminae must be of uniform stress
E 608 Specification for Metal-Sheathed Base-Metal Ther-
distribution. One type of composite specimen has been prepared by
5
mocouples
cementing the ends of the laminae together and then smoothing the edges
with sandpaper. The direction of loading shall be perpendicular to the E 644 Test Methods for Testing Industrial Resistance Ther-
5
edges of the individual laminae.
mometers
E 691 Practice for Conducting an Interlaboratory Study to
1.3 The values stated in SI units are to be regarded as the
6
Determine the Precision of a Test Method
standard. The values given in parentheses are for information
E 879 Specification for Thermistor Sensors for Clinical
only.
5
Laboratory Temperature Measurement
1.4 This standard does not purport to address all of the
E 1137 Specification for Industrial Platinum Resistance
safety concerns, if any, associated with its use. It is the
5
Thermometers
responsibility of the user of this standard to establish appro-
7
2.2 ISO Standards:
priate safety and health practices and determine the applica-
ISO 75-1 Plastics—Determination of Temperature of De-
bility of regulatory limitations prior to use.
flection Under Load—Part 1: General Test Method
NOTE 2—The test method described as a Method B of this test method,
ISO 75-2 Plastics—Determination of Temperature of De-
and test methods Ae and Be of ISO 75-1 and ISO 75-2, 1993, are
flection Under Load—Part 2: Plastics and Ebonite
technically equivalent.
8
2.3 NIST Document:
NBS Special Publication 250-22
2. Referenced Documents
2.1 ASTM Standards:
3. Terminology
2
D 618 Practice for Conditioning Plastics for Testing
2 3.1 General—The definitions of plastics used in this test
D 883 Terminology Relating to Plastics
3 method are in accordance with Terminology D 883 unless
D 1898 Practice for Sampling of Plastics
otherwise indicated.
D 1999 Guide for Selection of Specimens and Test Param-
4
Annual Book of ASTM Standards, Vol 08.03.
1 5
This test method is under the jurisdiction of ASTM Committee D20 on Plastics Annual Book of ASTM Standards, Vol 14.03.
6
and is the direct responsibility of Subcommittee D20.30 on Thermal Properties Annual Book of ASTM Standards, Vol 14.02.
7
(Section D20.30.07). Available from American National Standards Institute, 11 W. 42nd St., 13th
Current edition approved August 10, 2001. Published October 2001. Originally Floor, New York, NY 10036.
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published as D 648 – 41 T. Last previous edition D 648 – 00a. Mangum, B. W., “Platinum Resistance Thermometer Calibration,” NBS Special
2
Annual Book of ASTM Standards, Vol 08.01. Publication 250-22, 1987. Available from National Institute of Standards and
3
Discontinued; see 1997 Annual Book of ASTM Standards, Vol 08.01. Technology, Gaithersburg, MD.
*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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D 648
4. Summary of Test Method 6. Interferences
4.1 A bar of rectangular cross section is tested in the 6.1 The results of the test may depend on the rate of heat
edgewise position as a simple beam with the load applied at its transfer between the fluid and the specimen and the thermal
conductivity of the fluid.
center to give maximum fiber stresses of 0.
...