1、Designation: D 5436 03Standard Specification forCast Poly(Methyl Methacrylate) Plastic Rods, Tubes, andShapes1This standard is issued under the fixed designation D 5436; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of l
2、ast revision. A number in parentheses indicates the year of last reapproval. Asuperscript 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.1. Scope*1.1 This specification covers poly(methy
3、l methacrylate)rods, tubes, and other shapes produced by casting or machiningcast blanks. This specification does not apply to heat-formedand molded or extruded parts and shapes, or sections that aremade by assembling or joining two or more pieces.NOTE 1The properties included in this specification
4、are those re-quired to identify the types and grades of materials covered. There may beother requirements necessary to identify particular characteristics.1.2 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of
5、this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.NOTE 2There is no known ISO equivalent to this standard.2. Referenced Documents2.1 ASTM Standards:D 542 Test Method for Index of Refraction of TransparentOrgani
6、c Plastics2D 570 Test Method for Water Absorption of Plastics2D 618 Practice for Conditioning Plastics and ElectricalInsulating Materials for Testing2D 638 Test Method for Tensile Properties of Plastics2D 648 Test Method for Deflection Temperature of PlasticsUnder Flexural Load2D 792 Test Methods fo
7、r Specific Gravity (Relative Density)and Density of Plastics by Displacement2D 883 Terminology Relating to Plastics2D 1003 Test Method for Haze and Luminous Transmittanceof Transparent Plastics2D 1600 Terminology of Abbreviated Terms Relating toPlastics2D 3892 Practice for Packaging/Packing of Plast
8、ics3E29 Practice for Using Significant Digits in Test Data toDetermine Conformance with Specifications43. Terminology3.1 The terminology used in this specification is in accor-dance with Terminology D 883 and Terminology D 1600.4. Classification4.1 TypesThis specification covers two types of castmet
9、hacrylate plastics:4.1.1 Type UVAMaterial having ultraviolet-lightabsorbingproperties as shown in Table 1.4.1.2 Type UVTMaterial not subject to the light-absorbingproperties shown in Table 1.4.2 FinishCastings may be specified with the followingfinishes:4.2.1 Finish 1Rods, tubes, and shapes having a
10、 smoothsurface finish obtained either in the casting process or byhighly polishing the surface.4.2.2 Finish 2Rods, tubes, and shapes having a rough,unfinished surface which may be frosted, abraded, sanded,machined, or as-cast.NOTE 3The sawed ends of Finish 1 and Finish 2 rods, tubes, andshapes are n
11、ot polished.5. General Requirements5.1 Finish 1 and Finish 2 cast tubes are subject to thefollowing permissible variations from the specified dimen-sions:5.1.1 Cast tubes may be specified with either TypeAor TypeB wall thickness tolerances as listed in Table 2. Type Atolerances are specified for app
12、lications where wall thickness iscritical to performance, otherwise Type B is generally speci-fied.5.1.2 Cast tubes are subject to the outside-diameter toler-ances listed in Table 3.5.1.3 Cut-to-size lengths of cast tube are subject to thelength tolerances listed in Table 4.1This specification is un
13、der the jurisdiction of ASTM Committee D20 onPlastics and is the direct responsibility of Subcommittee D20.15 on ThermoplasticMaterials.Current edition approved June 10, 2003. Published August 2003. Originallyapproved in 1993. Last previous edition approved in 1999 as D 5436 99.2Annual Book of ASTM
14、Standards, Vol 08.01.3Annual Book of ASTM Standards, Vol 08.02.4Annual Book of ASTM Standards, Vol 14.02.1*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.5.2 Finish 1 a
15、nd Finish 2 cast rods are subject to thefollowing dimensions and tolerances.5.2.1 Cast rods are subject to the diameter tolerances listedin Table 5.5.2.2 Cut-to-size lengths of cast rod are subject to the lengthtolerances listed in Table 4.5.3 Tolerances for shapes other than simple rods and tubesde
16、pend upon the shapes themselves. Tolerances for these castshapes are to be specified independently.6. Detail Requirements6.1 The following applies to all specified limits in thisspecification: For purposes of determining conformance withthis specification an observed value or a calculated value shal
17、lbe rounded to the nearest 1 MPa 100 psi for tensile strength,and for all other properties shall be rounded to the nearest unitin the last righthand place of figures used in expressing thelimiting value, in accordance with the rounding method ofPractice E29.6.2 The physical and optical properties in
18、 this specificationare based on Finish 1 material unless otherwise specified.6.3 Rods, tubes, and shapes shall conform to the detailrequirements prescribed in Table 1 and, in addition, shall be soprepared as to conform to the following properties:6.3.1 Bubbles or inclusions in cast rods, tubes, and
19、shapesshall not exceed 3.96 mm 0.156 in. in any dimension. Nomore than three such defects are permissible in any standardlength greater than 122 cm 48 in., or an outside diametergreater than 76.2 mm 3 in. Bubbles or inclusions are notpermitted in rods, tubes, or shapes less than 122 cm 48 in. inleng
20、th and less than 76.2 mm 3 in. in outside diameter.Defects less than 1 mm 0.039 in. shall be disregarded, unlessgrouped to form an objectionable pattern.7. Number of Tests7.1 The number of tests shall be consistent with the require-ments of Sections 8 and 10.8. Sampling and Specimen Preparation8.1 S
21、ampling shall be statistically adequate to satisfy therequirements of Section 10.8.2 In the case of rods, tubes, or special shapes from whichthe required test specimens cannot be cut, the test specimensshall be prepared specially from the same raw materials andunder conditions simulating the manufac
22、ture of the special sizeor shape. Otherwise a unit of the manufactured product shall beused for testing.TABLE 1 Detail Requirements for Cast Methacrylate Rods,Tubes, and ShapesType UVA Type UVTIndex of refraction, nD, 23Cmin: 1.48 1.48max: 1.50 1.50Specific gravity, 23/23C 73.4/73.4Fmin: 1.18 1.18ma
23、x: 1.20 1.20Spectral transmittance, %, max270 nm: 5 .280 nm: 5 .290 nm: 5 .310 nm: 5 .340 nm: 5 .Luminous transmittance, %, minup to 4.7 mm 0.187 in. thickness: 91 9125.4 mm 1.00 in. thickness: 89 89greater than 25.4 mm 1.00 in. thickness: 87 87Haze, %, max 3.0 3.0Deflection temperature under load a
24、t 1820kPa 264 psi, C F min.12.0 mm 0.472 in.24.0 mm 0.944 in. 88 190.4 88 190.424.0 mm 0.944 in.100 mm 3.937 in. 93 199.4 93 199.4Water absorption at 23CGain in weight, 3.2 mm 0.125 in. thick, %,max0.8 0.8Tensile strength at 23C 73.4F, min, MPapsi55 8000 55 8000Elongation at break, %, min 2 2TABLE 2
25、 Sizes and Permissible Tolerances for Wall Thickness ofCast TubeNominal Wall Thickness,mm in.Permissible Wall Thickness Tolerances,6, mm in.Type A Type Bup to 4.7 0.187 0.5 0.020 not applicableup to 6.4 0.250 0.6 0.025 1.1 0.045up to 9.5 0.375 0.9 0.035 1.4 0.055up to 12.7 0.550 1.1 0.045 1.5 0.060u
26、p to 19.0 0.750 1.5 0.060 2.3 0.090up to 25.4 1.00 3.8 0.150 not applicablegreater than 25.4 1.00 6.4 0.250 not applicableTABLE 3 Sizes and Permissible Tolerances for Outside Diameterof Cast TubesNominal OutsideDiameter,mm in.Outside DiameterTolerances,6, mm in.Difference BetweenMaximum and MinimumO
27、utside Diameter (OneTube), Not to Exceed,mm in.up to 76.2 3.0 0.5 0.020 0.6 0.025up to 98.4 3.875 0.8 0.030 1.0 0.040up to 152.4 6.00 1.1 0.045 1.5 0.060up to 304.8 12.00 1.6 0.065 2.0 0.080greater than 304.8 12.00 3.2 0.125 not applicableTABLE 4 Sizes and Permissible Length Tolerances for Cut-to-Le
28、ngth Cast Rod and TubeNominal OutsideDiameter,mm in.Permissible LengthTolerances,6, mm in.up to 76 3.0 2 0.079up to 280 11.0 3 0.118greater than 280 11.0 6 0.236TABLE 5 Size and Permissible Tolerances for Diameter of CastRodsSize, Diameter, mm in.Diameter Tolerances,6, mm in.up to 9.5 0.375 0.1 0.00
29、5up to 25.4 1.00 0.2 0.010up to 50.8 2.00 0.4 0.015up to 76.2 3.00 0.8 0.030up to 152.4 6.00 1.1 0.045up to 304.8 12.00 1.5 0.060greater than 304.8 12.00 2.5 0.100D54360328.3 A batch or lot shall be constituted as a unit of manufac-ture as prepared for shipment, and may consist of product fromtwo or
30、 more production runs.9. Test Methods9.1 The properties enumerated in this specification shall bedetermined in accordance with the following test methods:9.1.1 Test ConditionsConduct the tests in the standardlaboratory atmosphere of 23 6 1.0C 73.4 6 1.8F and 50 62 % relative humidity, unless otherwi
31、se specified in the testmethods or in this specification.9.1.2 Index of RefractionTest in accordance with TestMethods D 542, using one of the exposed surfaces of the testspecimen that has been given any necessary polish withoutgross removal of material.9.1.3 Specific GravityTest in accordance with M
32、ethod Aof Test Methods D 792.9.1.4 Water AbsorptionTest in accordance with TestMethod D 570, using the 24-h immersion procedure. Beforetesting and following immersion, condition the test specimensfor24hat506 3C 112 6 5F in accordance with ProcedureB of Test Methods D 618.9.1.5 Defection Temperature
33、Under Flexural LoadTest inaccordance with Test Method D 648. Any square, rectangular,or cylindrical test specimen may be used, but calculate the testload used on the basis of a center-loaded beam in which theouter fiber stress produced is 1820 kPa 264 psi. Stack andbind together pieces of thin sheet
34、, 12.7 mm 0.500 in. inwidth, to form a test specimen approximately 12.7 by 12.7 mm0.500 by 0.500 in. Load the specimen parallel to the facescontaining the original surfaces of the material. Specimens12.7 by 12.7 mm 0.500 by 0.500 in. machined from the faceof thick material shall be loaded parallel t
35、o the face containingthe original surface.9.1.6 Tensile Strength and Elongation at BreakTest inaccordance with Test Method D 638 using Type I or Type IIspecimens at a cross-head speed of 5 mm/min 0.2 in./min.9.1.7 Spectral TransmittanceMeasure the spectral trans-mittance at each specified wavelength
36、 with a suitable spectro-photometer.9.1.8 Light TransmittanceTest in accordance with TestMethod D 1003.9.1.9 HazeTest in accordance with Test Method D 1003.10. Certification and Inspection10.1 When specified in the purchase order or contract, thepurchaser shall be furnished certification that sample
37、s repre-senting each lot have been either tested or inspected as directedin this specification and the requirements have been met. Whenspecified in the purchase order or contract, a report of the testresults shall be furnished.10.2 Lot-acceptance inspection shall be the basis on whichacceptance or r
38、ejection of the lot is made. The lot-acceptanceinspection shall consist of (1) thickness and dimensions, (2)appearance, and (3) deflection temperature.10.3 Periodic check inspection shall consist of the testsspecified for all requirements of the material under thisspecification. Supplier shall deter
39、mine and use an inspectionfrequency which shall be adequate to ensure that the materialis certifiable in accordance with 10.4.10.4 Certification shall be that the material was manufac-tured, sampled, tested, and inspected in accordance with thisspecification and that average values meet the requirem
40、ents ata confidence level of 95 %.10.5 Any report made in accordance with 10.1 shall consistof the results of the lot-acceptance inspection of the shipmentand the results of the most recent periodic-check inspection.11. Packaging and Marking11.1 All packing, packaging, and marking provisions ofPract
41、ice D 3892 shall apply to this specification.12. Keywords12.1 acrylic; acrylic plastic; cast acrylic; clear weatherableplastics; plastic; plastic materials; plastic rods; plastic shapes;plastic tubes; PMMA; poly(methyl methacrylate); rods;shapes; transparent; tubesSUMMARY OF CHANGESThis section iden
42、tifies the location of selected changes to this specification. For the convenience of the user,Committee D20 has highlighted those changes that may impact the use of this specification. This section mayalso include descriptions of the changes or the reasons for the changes, or both.D 543603:(1) Revi
43、sed “Deflection Temperature Under Flexural Load”requirements in Table 1 to be consistent with SpecificationD 4802, Category A-1.(2) Deleted Figure 1 (Deflection Temperature vs. Thickness).D 543699:(1) Revised Note 2.(2) Revised text of Section 10.(3) Added Summary of Changes section.D5436033ASTM Int
44、ernational takes no position respecting the validity of any patent rights asserted 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 entirel
45、y their own responsibility.This standard is subject to revision at any time by the 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 sh
46、ould be addressed to ASTM International Headquarters. Your comments will receive 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 St
47、andards, at the address shown below.This standard is copyrighted by ASTM International, 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 the ASTM website(www.astm.org).D5436034
