1、Designation: D3917 12D3917 15Standard Specification forDimensional Tolerance of Thermosetting Glass-ReinforcedPlastic Pultruded Shapes1This standard is issued under the fixed designation D3917; the number immediately following the designation indicates the year oforiginal adoption or, in the case of
2、 revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope Scope*1.1 This specification defines production tolerances applicable to standard rods, bars, shap
3、es, and shapes flat sheet pultrudedfrom 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 may carry specific tolerances that vary from the st
4、andard.1.4 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information only and are not considered standard.1.5 The following safety hazards caveat pertains only to the test methods po
5、rtion, Section 4, of this specification:This standarddoes not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of thisstandard to establish appropriate safety and health practices and determine the applicability of regulatory limita
6、tions prior to use.NOTE 1There is no known ISO equivalent to this standard.2. Terminology2.1 Definitions:2.1.1 camberthe deviation of the edge or surface from a reference straight line.line with the weight of the pultrusion notminimizing the measurement.2.1.2 flat sheeta rectangular solid pultruded
7、profile with a width of 12 in. up to and including 78 inches.2.1.3 mean wall thicknessthe average of two or more wall thickness measurements taken at multiple locations.2.1.4 straightnessthe upward deviation of a pultruded shape when resting on a flat surface measured in a manner that theweight of t
8、he pultruded part minimizes the deviation.2.1.4 unilateral tolerancea tolerance in which the variation is permitted in one direction (either “+” or “-”) from the specifieddimension.3. Dimensional Criteria3.1 Dimensional tolerances for cross sections Cross-sectional dimensions for standard rods, bars
9、, and shapes shall be prescribedin Table 1.3.2 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
10、).3.5 Flatness (flat surface) tolerances for bars, solid shapes, and semihollow shapessemihollow shapes, and flat sheet shall be asprescribed 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
11、 prescribed in Table 7 (also see 4.4).1 This specification is under the jurisdiction of ASTM Committee D20 on Plastics and is the direct responsibility of Subcommittee D20.18 on Reinforced ThermosettingPlastics.Current edition approved April 1, 2012April 1, 2015. Published May 2012April 2015. Origin
12、ally approved in 1980. Last previous edition approved in 20112012 asD3917 - 11.D3917 - 12. DOI: 10.1520/D3917-12.10.1520/D3917-15.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. B
13、ecauseit 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 versionof the standard as published by ASTM is to be considered the official document.*A Summary of Changes section ap
14、pears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States13.8 Camber tolerances for shapes can be as prescribed in Table 8, if required by the customer. Camber is not specified forstandard shapes but will be a s
15、pecial customer requirement.3.9 The selection, type, and amount of reinforcements, as well as resin system used, directly affect dimensions. Tolerances shallbe agreed upon between the supplier and the user.3.10 Squareness of end cut for bars, solid shapes, semihollow shapes, and flat sheet shall be
16、as prescribed in Table 9.4. Test Methods4.1 Obtain the specified tolerances with conventional measuring equipment. Measuring procedures, gages, and fixtures shall beagreed upon between the supplier and the user.4.2 Measure departure from straightness by placing the section on a level table so that t
17、he arc or departure from straightnessis vertical. Measure the vertical depth of the arc with a feeler gauge, a straightedge, or both.4.3 Measure twist by placing the pultruded section on a flat surface and using an inclinometer. An inclinometer is acommercially available device used to measure the a
18、ngle of inclination.4.4 Measure angles with protractors or gauges.5. Keywords5.1 dimensional tolerance; pultruded shapes; thermosetting plasticTABLE 1 Cross-Sectional DimensionsStandard Rods, Bars, and ShapesNOTE 1The minimum tolerances are applicable for thicknesses less than 0.05 in. (1.27 mm).Sol
19、id Dimensions, in. (mm)ADie StruckDimensionA, BBWall ThicknessB(Open Shape)BThickness (Flat Sheets)CWall ThicknessB(Closed Shape)Thickness0.125 (3.175) and underThicknessover 0.125 (3.175)4 %(0.094 in. max)10 %0.010 (0.25) min15 %0.010 (0.25) min10 %0.050 (1.27) max20 %0.010 (0.25) maxAThe outside d
20、imension of a part.BStandard pultruded section with dimension up to 36-in. (914-mm) diameter.TABLE 2 LengthStandard Rods, Bars, Shapes, and Flat SheetAllowable Deviation from Specified Length, +, in. (+, mm), except as notedLength up to 8 ft (3.65 m)inclusiveLength over 8 to 24 ft (3.65 to9.14 m) in
21、clusive Length over 24 ft (9.14 m)All Rods, Bars, and Shapes +0.25, 0 (+6.35, 0) +0.5, 0 (+12.7, 0) +3, 0 (+76.2, 0)TABLE 3 StraightnessStandard Bars, Rods, Shapes, and Flat SheetProductSpecified Diameter (Rods)Specified Width (Bars)Max Dimension (Shapes)Specified Thickness(Rectangles)Minimum Thickn
22、ess(Shapes)Allowable Deviation (D) from Straight, in. (mm)in. (mm) in. (mm) In Total Length of PieceRods and square,hexagonal, andoctagonal barsall . 0.030 (2.50) length, ft (m)Rectangular bars Up to 1.499 (38.07), incl Up to 0.094 (2.4),incl0.050 (4.17) measured length, ft (m)D3917 152TABLE 3 Conti
23、nuedProductSpecified Diameter (Rods)Specified Width (Bars)Max Dimension (Shapes)Specified Thickness(Rectangles)Minimum Thickness(Shapes)Allowable Deviation (D) from Straight, in. (mm)in. (mm) in. (mm) In Total Length of Piece0.095 (2.4) andover0.040 (3.33) measured length, ft (m)1.500 (38.10) and ov
24、er all 0.040 (3.33) measured length, ft (m)ShapesOpen all all 0.050 (4.17) measured length, ft (m)ShapesClosed all all 0.030 (2.5) measured length, ft (m)AFlat Sheet all all 0.030 (2.5) measured length, ft (m)AAMeasured when weight of pultrusion minimizes the deviation by contact with flat surface.D
25、3917 153TABLE 4 TwistA Standard Bars and ShapesProductSpecified Width (Bars)Max Dimension(Shapes)Specified Thickness(Rectangles)Minimum Thickness(Shapes)Allowable Deviation from Straight, degin. (mm) in. (mm) In Lengths Up to 20 ft (6 m)Bars all all 1/ftShapes-Open all all 1/ftShapes-Closed all all
26、1/ft; 7 maxAMeasured when weight of pultrusion minimizes the deviation by contact with flat surface.TABLE 5 Flatness (Flat Surfaces)Standard Bars, Solid Shapes, Semihollow Shapes, and Flat SheetSurface Width, in. (mm)Maximum AllowableDeviation (D), in. (mm)Up to 1 (25.4), incl 0.008 (0.20)Over 1 (25
27、.4) 0.008 (0.008) W, in. (mm)In any 1 in. (25.4 mm) of width 0.008 (0.20)Flat Sheet 0.008 (0.008) W, in. (mm)0.25 (6.25) MaxTABLE 6 Flatness (Flat Surfaces)Standard Hollow ShapesMinimumThickness ofCompositeForming theSurface, in.(mm)Maximum Allowable Deviation (D), in. (mm)Widths up to1 in. (25.4 mm
28、), incl, orany 1-in. (25.4-mm)Incrementof WiderSurfacesWidths over 1 in. (25.4 mm)Up to 0.187 (4.7), incl 0.012 (0.30) 0.012 (0.12) W, in. (mm)0.188 (4.8) and over 0.008 (0.20) 0.008 (0.008) W, in. (mm)D3917 154TABLE 7 AngularityStandard Rods, Bars, and ShapesMinimum SpecifiedLeg Thickness,in. (mm)A
29、llowable Deviation from SpecifiedAngle,Angles 90 or less Angles more than 90Up to 0.749 (19.02), incl 2 2TABLE 8 CamberStandard Shapes (See 3.8)ProductEnvelope Diameter(Shapes)Minimum Thickness(Shapes)Allowable Deviation (D) from Straight, in.(mm)in. (mm) in. (mm) In total length of pieceShapes All
30、Up to 0.094 (2.4), incl 0.050 (4.17) measured length, ft (m)TABLE 9 Squareness of End CutStandard Rods, Bars, Shapes, and Flat SheetProfiles over 2 in. (50.8 mm) in diameter or width 1Profiles 2 in. (50. 8 mm) inclusive and under in diameter or width 2SUMMARY OF CHANGESCommittee D20 has identified t
31、he location of selected changes to this standard since the last issue (D3917 12) that may impact the use of this standard. (April 1, 2015)(1) Introduced tolerances for pultruded flat sheets.(2) Changed unilateral thickness tolerances to bilateral tolerances.(3) Changed the length tolerance from bila
32、teral to unilateral tolerances.(4) Added tolerances for squareness of end cut.(5) Revised the definition of camber: camberthe deviation of the edge or surface from a reference straight line with the weightof the pultrusion not minimizing the measurement.(6) Changed note for Table 1 to: The minimum t
33、olerances are applicable for thicknesses less than 0.05 in (1.27 mm)(7) Eliminated the 1 degree footnote in Table 7.(8) Removed the web/flange camber drawing in Table 8 as web and flange cambers cannot be combined.(9) Changed the spelling error from enclusive to inclusive in Table 9.(10) Modified me
34、tric conversions (where ever applicable) when a ratio was required to represent a tolerance allowable based ona deviation per length. In addition the mm/mm conversions that were not correct before were addressed.ASTM International takes no position respecting the validity of any patent rights assert
35、ed in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by t
36、he responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn.Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive
37、careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM Internat
38、ional, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through t
39、he ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ 155TABLE 1 Cross-Sectional DimensionsStandard Rods, Bars, and ShapesStandard Pultruded Section with Di
40、mension up to 36-in. (914-mm) DiameterSpecified Dimension, in. (mm)Solid Dimensions, in. (mm)A, AADie StruckDimensionABWall Thickness(open shape)CWall Thickness(closed shape)All 4 %(0.094 in. max)10 % of specifieddimension, but notexceeding either0.100 (2.54) max or0.010 (0.25) min20 % of specified
41、dimension, but notexceeding either0.100 (2.54) max or0.010 (0.25) minA The outside dimension of a tube.TABLE 2 LengthStandard Rods, Bars, and ShapesAAllowable Deviation from Specified Length, +in. (+mm), except as notedin. (mm) Up to 8 ft (3.65 m)in Length, inclOver 8 to 24 ft (3.65to 9.14 m) in Len
42、gth,inclOver 24 to 50 ft (9.14to 15.24 m) in Length,inclUp to 0.499 (12.67) incl 18 (3.18) 14 (6.35) 3 (76.2)0.500 to 1.249 (12.70 to 31.72) incl 18 (3.18) 14 (6.35) 3 (76.2)1.250 to 2.999 (31.75 to 76.17) incl 18 (3.18) 14 (6.35) 3 (76.2)3.000 to 7.999 (76.20 to 203.17) incl 316 (4.76) 14 (6.35) 3
43、(76.2)AA unilateral tolerance is permitted if the range remains the same.TABLE 3 StraightnessStandard Bars, Rods, and ShapesProductSpecified Diameter (Rods)Specified Width (Bars)Max Dimension (Shapes)Specified Thickness(Rectangles)Minimum Thickness(Shapes)Allowable Deviation (D) from Straight, in. (
44、mm)in. (mm) in. (mm) In Total Length of PieceRods and square,hexagonal, andoctagonal barsall . 0.030 (0.51) length, ft (m)Rectangular bars Up to 1.499 (38.07), incl Up to 0.094 (2.4),incl0.050 (1.3) measured length, ft (m)0.095 (2.4) andover0.040 (1.01) measured length, ft (m)1.500 (38.10) and over
45、all 0.040 (1.01) measured length, ft (m)ShapesOpen all all 0.050 (1.3) measured length, ft (m)ShapesClosed all all 0.030 (1.3) measured length, ft (m)AA Measured when weight of pultrusion minimizes the deviation by contact with flat surface.TABLE 4 TwistA Standard Bars and ShapesProductSpecified Wid
46、th (Bars)Max Dimension(Shapes)Specified Thickness(Rectangles)Minimum Thickness(Shapes)Allowable Deviation from Straight, degin. (mm) in. (mm) In Lengths Up to 20 ft (6 m)Bars all all 1/ftShapes-Open all all 1/ftShapes-Closed all all 1/ft; 7 maxD3917 156A Measured when weight of pultrusion minimizes
47、the deviation by contact with flat surface.TABLE 5 Flatness (Flat Surfaces)Standard Bars, Solid Shapes, and Semihollow ShapesSurface Width, in. (mm)Maximum AllowableDeviation (D), in. (mm)Up to 1 (25.4), incl 0.008 (0.20)Over 1 (25.4) 0.008 (0.20) W, in. (mm)In any 1 in. (25.4 mm) of width 0.008 (0.
48、20)TABLE 6 Flatness (Flat Surfaces)Standard Hollow ShapesMinimumThickness ofCompositeForming theSurface, in.(mm)Maximum Allowable Deviation (D), in. (mm)Widths up to1 in. (25.4mm), incl, orany 1-in. (25.4-mm) Incrementof WiderSurfacesWidths over 1 in. (25.4 mm)Up to 0.187 (4.7), incl 0.012 (0.30) 0.
49、012 (0.30) W, in. (mm)0.188 (4.8) and over 0.008 (0.20) 0.008 (0.20) W, in. (mm)TABLE 7 AngularityStandard Rods, Bars, and ShapesAMinimum SpecifiedLeg Thickness,in. (mm)Allowable Deviation from SpecifiedAngle,Angles 90 or less Angles more than 90Up to 0.749 (19.02), incl 2 2AThe end cut angularity is 1TABLE 8 CamberStandard Shapes (See 3.8)ProductEnvelope Diameter(Shapes)Minimum Thickness(Shapes)All
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