ASTM D3917-08
(Specification)Standard Specification for Dimensional Tolerance of Thermosetting Glass-Reinforced Plastic Pultruded Shapes
Standard Specification for Dimensional Tolerance of Thermosetting Glass-Reinforced Plastic Pultruded Shapes
ABSTRACT
This specification defines the dimensional tolerances of standard rods, bars, and shapes pultruded from thermosetting glass-reinforced plastics. Tolerances cover dimensional criteria for cross sections, width or diameter, straightness, twist, surface flatness, angularity, and camber.
SCOPE
1.1 This specification defines tolerances applicable to standard rods, bars, and shapes pultruded from thermosetting glass-reinforced plastics.
1.2 These dimensional tolerances apply to all shapes specified as “standard” by the pultrusion industry.
1.3 Custom shapes and products designed for special applications shall carry specific tolerances that may vary from the standard because a change in type or amount of reinforcement used in a composite directly affects dimensions. The tolerances may be wider or tighter than associated with “standard” shapes.
1.4 The following safety hazards caveat pertains only to the test methods portion, Section 4, of this specification: 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 equivalent ISO standard.
General Information
Relations
Buy Standard
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: D3917 – 08
Standard Specification for
Dimensional Tolerance of Thermosetting Glass-Reinforced
1
Plastic Pultruded Shapes
This standard is issued under the fixed designation D3917; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope* 2.1.6 straightness—the perpendicular deviation of the pul-
truded profile when resting on a flat surface.
1.1 This specification defines tolerances applicable to stan-
2.1.7 web bow—the deviation where the web of the section
dard rods, bars, and shapes pultruded from thermosetting
contacts the horizontal plane.
glass-reinforced plastics.
2.1.8 web camber—the deviation from the web surface to
1.2 These dimensional tolerances apply to all shapes speci-
the reference straight line.
fied as “standard” by the pultrusion industry.
2.1.9 web-flange camber—the deviation from the free edge
1.3 Custom shapes and products designed for special appli-
of the flange to the reference straight line.
cations shall carry specific tolerances that may vary from the
standard because a change in type or amount of reinforcement
3. Dimensional Criteria
used in a composite directly affects dimensions. The tolerances
3.1 Dimensional tolerances for cross sections shall be pre-
maybewiderortighterthanassociatedwith“standard”shapes.
scribed in Table 1.
1.4 The following safety hazards caveat pertains only to the
3.2 Width/diameter for solid rods and bars and length
test methods portion, Section 4, of this specification: This
tolerances for standard rods, bars, and shapes shall be as
standard does not purport to address all of the safety concerns,
prescribed in Table 2.
if any, associated with its use. It is the responsibility of the user
3.3 Straightness tolerances shall be as prescribed in Table 3
of this standard to establish appropriate safety and health
(also see 4.2).
practices and determine the applicability of regulatory limita-
3.4 Twist tolerances for bars and shapes shall be as pre-
tions prior to use.
scribed in Table 4 (also see 4.3).
NOTE 1—There is no similar or equivalent ISO standard.
3.5 Flatness (flat surface) tolerances for bars, solid shapes,
and semihollow shapes shall be as prescribed in Table 5.
2. Terminology
3.6 Flatness (flat surface) tolerances of hollow shapes shall
2.1 Definitions:
be as prescribed in Table 6.
2.1.1 Class 1 hollow shape—one whose void is round and 1
3.7 Angularity tolerances for bars and shapes shall be as
in. (25 mm) or more in diameter and whose weight is equally
prescribed in Table 7 (also see 4.4).
distributed on opposite sides of two or more equally spaced
3.8 Camber tolerances for shapes shall be as prescribed in
axes.
Table 8 (also see 4.5). Camber is not specified for standard
2.1.2 envelope diameter—the diameter of the smallest circle
shapes but will be a special customer requirement.
that will completely enclose the cross section of the pultruded
3.9 The selection, type, and amount of reinforcements, as
product.
well as resin system used, directly affect dimensions. Toler-
2.1.3 flange bow—the deviation where the flange of the
ances shall be agreed upon between the supplier and the user.
section contacts the horizontal plane.
2.1.4 flange camber—the deviation from the flange surface 4. Test Methods
to the reference straight line.
4.1 Obtain the specified tolerances with conventional mea-
2.1.5 mean wall thickness—the average of two or more wall
suring equipment. Measuring procedures, gages, and fixtures
thickness measurements.
shall be agreed upon between the supplier and the user.
4.2 Measure departure from straightness by placing the
1
section on a level table so that the arc or departure from
This specification is under the jurisdiction of ASTM Committee D20 on
Plastics and is the direct responsibility of Subcommittee D20.18 on Reinforced
straightness is horizontal. Measure the depth of the arc with a
Thermosetting Plastics.
feeler gauge, a straightedge, or both.
Current edition approved March 1, 2008. Published March 2008. Originally
´1
approved in 1980. Last previous edition approved in 2002 as D3917 - 96(2002) .
DOI: 10.1520/D3917-08.
*ASummary 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.
1
---------------------- Page: 1 ----------------------
D3917 – 08
TABLE 1 Cross-Sectional Dimensions—Standard Rods, Bars, and Shapes
Standard Pultruded Section with Envelope Dimension up to 10-in. (254-mm) Diameter
A,B
Solid Dimensions, 6in. (mm)
A B C
Parallel to the Layered Perpendicular to the Wall Thickness Completely
Spe
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
e1
Designation:D3917–96 (Reapproved 2002) Designation: D 3917 – 08
Standard Specification for
Dimensional Tolerance of Thermosetting Glass-Reinforced
1
Plastic Pultruded Shapes
This standard is issued under the fixed designation D 3917; 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
e NOTE—Editorially revised 1.3 and 2.1.5 in March 2002.
1. Scope*
1.1 This specification defines tolerances applicable to standard rods, bars, and shapes pultruded from thermosetting
glass-reinforced plastics.
1.2 These dimensional tolerances apply to all shapes specified as “standard” by the pultrusion industry.
1.3Custom1.3 Custom shapes and products designed for special applications shall carry specific tolerances that may vary from
the standard because a change in type or amount of reinforcement used in a composite directly affects dimensions. The tolerances
may be wider or tighter than associated with “standard” shapes.
1.4 The following safety hazards caveat pertains only to the test methods portion, Section 4, of this specification: 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 equivalent ISO standard.
2. Terminology
2.1 Definitions:
2.1.1 Class 1 hollow shape—one whose void is round and 1 in. (25 mm) or more in diameter and whose weight is equally
distributed on opposite sides of two or more equally spaced axes.
2.1.2 envelope diameter—the diameter of the smallest circle that will completely enclose the cross section of the pultruded
product.
2.1.3 flange bow—the deviation where the flange of the section contacts the horizontal plane.
2.1.4 flange camber—the deviation from the flange surface to the reference straight line.
2.1.5 mean wall thickness—the average of two or more wall thickness measurements.
2.1.6 straightness—the perpendicular deviation of the surface contacting a horizontal plane. —the perpendicular deviation of
the pultruded profile when resting on a flat surface.
2.1.7 web bow—the deviation where the web of the section contacts the horizontal plane.
2.1.8 web camber—the deviation from the web surface to the reference straight line.
2.1.9 web-flange camber—the deviation from the free edge of the flange to the reference straight line.
3. Dimensional Criteria
3.1 Dimensional tolerances for cross sections shall be prescribed in Table 1.
3.2 Width/diameter for solid rods and bars and length tolerances for standard rods, bars, and shapes shall be as prescribed in
Table 2.
3.3 Straightness tolerances shall be as prescribed in Table 3 (also see 4.2).
3.4 Twist tolerances for bars and shapes shall be as prescribed in Table 4 (also see 4.3).
3.5 Flatness (flat surface) tolerances for bars, solid shapes, and semihollow shapes shall be as prescribed in Table 5.
3.6 Flatness (flat surface) tolerances of hollow shapes shall be as prescribed in Table 6.
3.7 Angularity tolerances for bars and shapes shall be as prescribed in Table 7 (also see 4.4).
3.8 Camber tolerances for shapes shall be as prescribed in Table 8 (also see 4.5). ). Camber is not specified for standard shapes
but will be a special customer requirement.
1
This specification is under the jurisdiction of ASTM Committee D20 on Plastics and is the direct responsibility of Subcommittee D20.18 on Reinforced Thermosetting
Plastics.
Current edition approved November 10, 1996. Published May 1997. Originally published as D3917–80. Last previous edition D3917–94.
e1
Current edition approved March 1, 2008. Published March 2008. Originally approved in 1980. Last previous edition approved in 2002 as D3917 - 96(2002) .
*ASummary 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.
1
---------------------- Page: 1 ----------------------
D3917–08
TABLE 1 Cross-Sectional Dimensions—Standard Rods, Bars, and Shapes
Standard Pultruded Section with Envelope Dimension up to 10-in. (254-mm) Diameter
A,B
Solid Dimensions, 6in. (mm)
A B C
Parallel to the Layered Perpendicular to the Wall Thickness Completely
Specified Dimension, in.
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.