ASTM D1042-93

Standard Test Method for Linear Dimensional Changes of Plastics Under Accelerated Service Conditions

SCOPE
1.1 This test method is designed to provide a means for measuring in plastic specimens the dimensional changes resulting from exposure to service conditions. In particular, this test method is suitable for measuring shrinkage or elongation developed under specific oven and water conditionings.
1.2 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 1--There is no similar or comparable ISO standard.

General Information

• Status: Historical
• Publication Date: 09-Mar-2001
• ICS: 83.080.01 - Plastics in general
• Technical Committee: D20 - Plastics
• Drafting Committee: D20.50 - Durability of Plastics

Relations

• Replaced By: ASTM D1042-01 - Standard Test Method for Linear Dimensional Changes of Plastics Under Accelerated Service Conditions
• Effective Date: 10-Mar-2001
• Referred By: ASTM D4726-18 - Standard Specification for Rigid Poly(Vinyl Chloride) (PVC) Exterior-Profile Extrusions Used for Assembled Windows and Doors
• Effective Date: 10-Mar-2001
• Referred By: ASTM F3459-21 - Standard Specification for Rigid Poly Vinyl Chloride (PVC) Exterior Profiles Used for Sound Walls
• Effective Date: 10-Mar-2001
• Referred By: ASTM D3679-21 - Standard Specification for Rigid Poly(Vinyl Chloride) (PVC) Siding
• Effective Date: 10-Mar-2001
• Referred By: ASTM F641-09(2023) - Standard Specification for Implantable Epoxy Electronic Encapsulants
• Effective Date: 10-Mar-2001
• Referred By: ASTM D3678-19 - Standard Specification for Rigid Poly(Vinyl Chloride) (PVC) Interior-Profile Extrusions
• Effective Date: 10-Mar-2001
• Referred By: ASTM D7445-18 - Standard Specification for Rigid Poly(Vinyl Chloride) (PVC) Siding with Foam Plastic Backing (Backed Vinyl Siding)
• Effective Date: 10-Mar-2001
• Referred By: ASTM D7793-21 - Standard Specification for Insulated Vinyl Siding
• Effective Date: 10-Mar-2001
• Referred By: ASTM F2150-19 - Standard Guide for Characterization and Testing of Biomaterial Scaffolds Used in Regenerative Medicine and Tissue-Engineered Medical Products
• Effective Date: 10-Mar-2001
• Referred By: ASTM F2902-16e1 - Standard Guide for Assessment of Absorbable Polymeric Implants
• Effective Date: 10-Mar-2001

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: D 1042 – 93
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Test Method for
Linear Dimensional Changes of Plastics Under Accelerated
Service Conditions
This standard is issued under the fixed designation D 1042; 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.
1. Scope rigidly separated by 100 6 0.2 mm. A very satisfactory scriber,
as shown in Fig. 1, consists of two sharp steel phonograph
1.1 This test method is designed to provide a means for
needles (approximately 1.5 mm in diameter) inserted in holes
measuring in plastic specimens the dimensional changes re-
drilled with their axes parallel to each other and perpendicular
sulting from exposure to service conditions. In particular, this
to and intersecting the long axis of a stainless steel rod, 7.9 mm
test method is suitable for measuring shrinkage or elongation
( ⁄16 in.) in diameter by 125 mm (5 in.) in length. The needle
developed in accordance with the procedures described in
points extend 6 mm beyond the supporting rod and are held in
Practice D 756.
position by two set screws inserted through the ends of the rod.
1.2 The values stated in SI units are to be regarded as the
A stainless steel gage with reference points consisting of a
standard. The values given in parentheses are for information
center and two short concentric arcs (R 5 99.80 6 0.02 mm,
only. 1
and R 5 100.20 6 0.02 mm) is recommended for calibration
1.3 This standard does not purport to address all of the
of the scriber. Thickness of arc lines should not exceed 0.02
safety problems, if any, associated with its use. It is the
mm.
responsibility of the user of this standard to establish appro-
5.2 Measuring Microscope, graduated to read to 0.1 mm or
priate safety and health practices and determine the applica-
better. (A Brinell microscope 203, for measuring Brinell
bility of regulatory limitations prior to use.
hardness, is very satisfactory.) For more precise measurements,
NOTE 1—There is no similar or comparable ISO standard.
a micrometer microscope may be used.
2. Referenced Documents
6. Sampling
2.1 ASTM Standards:
6.1 Sampling shall be in accordance with the present con-
D 756 Practice for Determination of Weight and Shape
siderations outlined in Practice D 1898.
Changes of Plastics Under Accelerated Service Condi-
tions
7. Test Specimens
D 883 Terminology Relating to Plastics
7.1 The test specimens shall be similar to those prescribed
D 1898 Practice for Sampling of Plastics
in Practice D 756 with the additional requirement that in the
direction of test the length should be not less than 110 mm. In
3. Terminology
practice, specimens 150 by 25 mm and of the full thickness of
3.1 Definitions: Definitions of terms applying to this test
the material are desirable. These specimens may be suspended
method appear in Terminology D 883.
individually in the specified environment by wire hooks
inserted in a hole punched in one end of the specimen. When
4. Significance and Use
one type of plastic is to be compared with another type, a
4.1 This test method is intended only as a convenient test
standard thickness of 3.2 mm (0.125 in.) is preferred.
method for measurement of linear dimensional changes in
plastics subjected to defined conditions of test as outlined in
8. Procedure
Practice D 756. When all precautions are observed, measure-
8.1 Immediately following the preconditioning period of the
ments are reproducible to 60.02 %.
test, scribe an arc of 100-mm radius on the surface of the test
specimen. Press one needle firmly into the specimen t
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