ASTM C271-99

Standard Test Method for Density of Sandwich Core Materials

SCOPE
1.1 This test method covers the determination of the density of sandwich construction core materials.  
1.2 The values stated in SI units are to be regarded as the standard. The inch-pound units given may be approximate.  
1.3 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-Oct-1999
• ICS: 83.120 - Reinforced plastics
• Technical Committee: D30 - Composite Materials
• Drafting Committee: D30.09 - Sandwich Construction

Relations

• Replaced By: ASTM C271/C271M-05 - Standard Test Method for Density of Sandwich Core Materials
• Effective Date: 01-Apr-2005

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:C271–99
Standard Test Method for
Density of Sandwich Core Materials
This standard is issued under the fixed designation C 271; 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 the purchaser and the seller. The minimum specimen size
recommendedis300mm(12in.)inlengthand300mm(12in.)
1.1 This test method covers the determination of the density
in width.
of sandwich construction core materials.
5.2 At least three specimens shall be tested.
1.2 The values stated in SI units are to be regarded as the
standard. The inch-pound units given may be approximate.
6. Conditioning
1.3 This standard does not purport to address all of the
6.1 Subject the test specimens to one of the following
safety concerns, if any, associated with its use. It is the
conditions:
responsibility of the user of this standard to establish appro-
6.1.1 Standard ASTM Atmospheric Conditions (Specifica-
priate safety and health practices and determine the applica-
tion E 171) of 23 6 3°C (73 6 5°F) and 50 6 5 % relative
bility of regulatory limitations prior to use.
humidity.
2. Referenced Documents 6.1.2 Inanovenatatemperatureof105 63°C(220 65°F).
6.1.3 In an oven at a temperature of 40 6 3°C (120 6 5°F).
2.1 ASTM Standards:
6.1.4 As agreed upon by the purchaser and the seller.
E 171 Specification for Standard Atmospheres for Condi-
6.2 The conditioning time shall be either:
tioning and Testing Flexible Barrier Materials
6.2.1 Of such duration that the specimen will have attained
3. Significance and Use constant weight (61 %), or
6.2.2 As agreed upon by the purchaser and the seller.
3.1 Density is a fundamental physical property that can be
6.3 After conditioning, cool the specimens at roomtempera-
used in conjunction with other properties to characterize the
ture. Some core materials quickly pick up moisture and must
sandwich core.
be cooled in a desiccator.
3.2 This test method provides a standard method of obtain-
ing sandwich core density data for quality control, acceptance
7. Procedure
specification testing, and research and development.
7.1 Weighthespecimensingrams(pounds)toaprecisionof
4. Apparatus 60.5 %.
7.2 Determine the plan dimensions of the specimens in
4.1 Circulating Air Oven, capable of maintaining uniform
millimetres (inches) to a precision of 60.5 %.
temperatures with an accuracy of 63°C (65°F).
7.3 Measure the thickness of the specimens in millimetres
4.2 Desiccator, if required.
(inches) to the nearest 0.025 mm (0.001 in.).
4.3 Micrometer, Gage, or Caliper, capable of measuring
accurately to 0.025 mm (0.001 in.).
8. Calculation
4.4 Weighing Scale, capable of measuring accurately to
8.1 Calculate the density as follows:
...