1、Designation: D5436 03 (Reapproved 2008)D5436 13Standard Specification forCast Poly(Methyl Methacrylate) Plastic Rods, Tubes, andShapes1This standard is issued under the fixed designation D5436; 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.This standard has been approved for use by agencies of the Department of Defense.1. Scope*1.1 This specific
3、ation covers poly(methyl methacrylate) rods, tubes, and other shapes produced by casting or machining castblanks. This specification does not apply to heat-formed and molded or extruded parts and shapes, or sections that are made byassembling or joining two or more pieces.NOTE 1The properties includ
4、ed in this specification are those required to identify the types and grades of materials covered. There may be otherrequirements necessary to identify particular characteristics.1.2 The values stated in SI units are to be regarded as standard.1.3 This standard does not purport to address all of the
5、 safety concerns, if any, associated with its use. It is the responsibilityof the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatorylimitations prior to use.NOTE 2There is no known ISO equivalent to this standard.2. Referenced Doc
6、uments2.1 ASTM Standards:2D542 Test Method for Index of Refraction of Transparent Organic PlasticsD570 Test Method for Water Absorption of PlasticsD618 Practice for Conditioning Plastics for TestingD638 Test Method for Tensile Properties of PlasticsD648 Test Method for Deflection Temperature of Plas
7、tics Under Flexural Load in the Edgewise PositionD792 Test Methods for Density and Specific Gravity (Relative Density) of Plastics by DisplacementD883 Terminology Relating to PlasticsD1003 Test Method for Haze and Luminous Transmittance of Transparent PlasticsD1600 Terminology for Abbreviated Terms
8、Relating to PlasticsD3892 Practice for Packaging/Packing of PlasticsE29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications3. Terminology3.1 The terminology used in this specification is in accordance with Terminology D883 and Terminology D1600.4. Classifi
9、cation4.1 TypesThis specification covers two types of cast methacrylate plastics:4.1.1 Type UVAMaterial having ultraviolet-lightabsorbing properties as shown in Table 1.4.1.2 Type UVTMaterial not subject to the light-absorbing properties shown in Table 1.4.2 FinishCastings may be specified with the
10、following finishes:1 This specification is under the jurisdiction of ASTM Committee D20 on Plastics and is the direct responsibility of Subcommittee D20.15 on Thermoplastic Materials.Current edition approved Nov. 1, 2008Oct. 1, 2013. Published December 2008October 2013. Originally approved in 1993.
11、Last previous edition approved in 20032008as D5436 03.D5436 03(2008). DOI: 10.1520/D5436-03R08.10.1520/D5436-13.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the s
12、tandards Document Summary page on the ASTM website.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. Becauseit may not be technically possible to adequately depict all changes accur
13、ately, 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 appears at the end of this standardCopyright ASTM International, 100 Barr Harbor
14、Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States14.2.1 Finish 1Rods, tubes, and shapes having a smooth surface finish obtained either in the casting process or by highlypolishing the surface.4.2.2 Finish 2Rods, tubes, and shapes having a rough, unfinished surface which may be fros
15、ted, abraded, sanded, machined,or as-cast.NOTE 3The sawed ends of Finish 1 and Finish 2 rods, tubes, and shapes are not polished.5. General Requirements5.1 Finish 1 and Finish 2 cast tubes are subject to the following permissible variations from the specified dimensions:5.1.1 Cast tubes mayshall be
16、specified with either Type A or Type B wall thickness tolerances as listed in Table 2. Type Atolerances are specified for applications where wall thickness is critical to performance, otherwise Type B is generally specified.5.1.2 Cast tubes are subject to the outside-diameter tolerances listed in Ta
17、ble 3.5.1.3 Cut-to-size lengths of cast tube are subject to the length tolerances listed in Table 4.5.2 Finish 1 and Finish 2 cast rods are subject to the following dimensions and tolerances.5.2.1 Cast rods are subject to the diameter tolerances listed in Table 5.5.2.2 Cut-to-size lengths of cast ro
18、d are subject to the length tolerances listed in Table 4.5.3 Tolerances for shapes other than simple rods and tubes depend upon the shapes themselves. Tolerances for these cast shapesare to be specified independently.TABLE 1 Detail Requirements for Cast Methacrylate Rods, Tubes,and ShapesType UVA Ty
19、pe UVTIndex of refraction, nD, 23Cmin: 1.48 1.48max: 1.50 1.50Specific gravity, 23/23C (73.4/73.4F)min: 1.18 1.18max: 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.
20、) thickness: 89 89greater than 25.4 mm (1.00 in.) thickness: 87 87Haze, %, max 3.0 3.0Deflection temperature under load at 1820kPa (264 psi), C (F) min.12.0 mm (0.472 in.)24.0 mm (0.944 in.) 88 (190.4) 88 (190.4)24.0 mm (0.944 in.)100 mm (3.937 in.) 93 (199.4) 93 (199.4)Water absorption at 23CGain i
21、n weight, 3.2 mm (0.125 in.) thick, %,max0.8 0.8Tensile strength at 23C (73.4F), min, MPa(psi)55 (8000) 55 (8000)Elongation at break, %, min 2 2TABLE 2 Sizes and Permissible Tolerances for Wall Thickness ofCast TubeNominal Wall Thickness,mm (in.)Permissible Wall Thickness Tolerances, mm (in.)Type A
22、Type Bup to 4.7 (0.187) 0.5 (0.020) not applicableup to 6.4 (0.250) 0.6 (0.025) 1.1 (0.045)up to 9.5 (0.375) 0.9 (0.035) 1.4 (0.055)up to 12.7 (0.550) 1.1 (0.045) 1.5 (0.060)up to 19.0 (0.750) 1.5 (0.060) 2.3 (0.090)up to 25.4 (1.00) 3.8 (0.150) not applicablegreater than 25.4 (1.00) 6.4 (0.250) not
23、 applicableD5436 1326. Detail Requirements6.1 The following applies to all specified limits in this specification: For purposes of determining conformance with thisspecification an observed value or a calculated value shall be rounded to the nearest 1 MPa (100 psi) for tensile strength, and forall o
24、ther properties shall be rounded to the nearest unit in the last righthand place of figures used in expressing the limiting value,in accordance with the rounding method of Practice E29.6.2 The physical and optical properties in this specification are based on Finish 1 material unless otherwise speci
25、fied.6.3 Rods, tubes, and shapes shall conform to the detail requirements prescribed in Table 1 and, in addition, shall be so preparedas to conform to the following properties:6.3.1 Bubbles or inclusions in cast rods, tubes, and shapes shall not exceed 3.96 mm (0.156 in.) in any dimension. No more t
26、hanthree such defects are permissible in any standard length greater than 122 cm (48 in.), or an outside diameter greater than 76.2 mm(3 in.). Bubbles or inclusions are not permitted in rods, tubes, or shapes less than 122 cm (48 in.) in length and less than 76.2 mm(3 in.) in outside diameter. Defec
27、ts less than 1 mm (0.039 in.) shall be disregarded, unless grouped to form an objectionable pattern.7. Number of Tests7.1 The number of tests shall be consistent with the requirements of Sections 8 and 10.8. Sampling and Specimen Preparation8.1 Sampling shall be statistically adequate to satisfy the
28、 requirements of Section 10.8.2 In the case of rods, tubes, or special shapes from which the required test specimens cannot be cut, the test specimens shallbe prepared specially from the same raw materials and under conditions simulating the manufacture of the special size or shape.Otherwise a unit
29、of the manufactured product shall be used for testing.8.3 A batch or lot shall be constituted as a unit of manufacture as prepared for shipment, and mayshall consist of product fromtwoone or more production runs.TABLE 3 Sizes and Permissible Tolerances for Outside Diameterof Cast TubesNominal Outsid
30、eDiameter,mm (in.)Outside DiameterTolerances, mm (in.)Difference BetweenMaximum and MinimumOutside Diameter (OneTube), Not to Exceed,mm (in.)up to 76.2 (3.0) 0.5 (0.020) 0.6 (0.025)up to 98.4 (3.875) 0.8 (0.030) 1.0 (0.040)up to 152.4 (6.00) 1.1 (0.045) 1.5 (0.060)up to 304.8 (12.00) 1.6 (0.065) 2.0
31、 (0.080)greater than 304.8 (12.00) 3.2 (0.125) not applicableTABLE 4 Sizes and Permissible Length Tolerances for Cut-to-Length Cast Rod and TubeNominal OutsideDiameter,mm (in.)Permissible LengthTolerances, mm (in.)up to 76 (3.0) 2 (0.079)up to 280 (11.0) 3 (0.118)greater than 280 (11.0) 6 (0.236)TAB
32、LE 5 Size and Permissible Tolerances for Diameter of CastRodsSize, Diameter, mm (in.) Diameter Tolerances, mm (in.)up to 9.5 (0.375) 0.1 (0.005)up to 25.4 (1.00) 0.2 (0.010)up to 50.8 (2.00) 0.4 (0.015)up to 76.2 (3.00) 0.8 (0.030)up to 152.4 (6.00) 1.1 (0.045)up to 304.8 (12.00) 1.5 (0.060)greater
33、than 304.8 (12.00) 2.5 (0.100)D5436 1339. Test Methods9.1 The properties enumerated in this specification shall be determined in accordance with the following test methods:9.1.1 Test ConditionsConduct the tests in the standard laboratory atmosphere of 23 6 1.0C (73.4 6 1.8F) and 50 6 2 %5 % relative
34、 humidity, unless otherwise specified in the test methods or in this specification.9.1.2 Index of RefractionTest in accordance with Test Methods D542, using one of the exposed surfaces of the test specimenthat has been given any necessary polish without gross removal of material.9.1.3 Specific Gravi
35、tyTest in accordance with Method A of Test Methods D792.9.1.4 Water AbsorptionTest in accordance with Test Method D570, using the 24-h immersion procedure. Before testing andfollowing immersion, condition the test specimens for 24 h at 50 6 3C (112 6 5F) in accordance with Procedure B of TestMethods
36、 D618.9.1.5 Defection Temperature Under Flexural LoadTest in accordance with Test Method D648. Any square, rectangular, orcylindrical test specimen may be used, is allowed, but calculate the test load used on the basis of a center-loaded beam in whichthe outer fiber stress produced is 1820 kPa (264
37、psi). Stack and bind together pieces of thin sheet, 12.7 mm (0.500 in.) in width,to form a test specimen approximately 12.7 by 12.7 mm (0.500 by 0.500 in.). Load the specimen parallel to the faces containingthe original surfaces of the material. Specimens 12.7 by 12.7 mm (0.500 by 0.500 in.) machine
38、d from the face of thick materialshall be loaded parallel to the face containing the original surface.9.1.6 Tensile Strength and Elongation at BreakTest in accordance with Test Method D638 using Type I or Type II specimensat a cross-head speed of 5 mm/min (0.2 in./min).9.1.7 Spectral TransmittanceMe
39、asure the spectral transmittance at each specified wavelength with a suitable spectrophotom-eter.9.1.8 Light TransmittanceTest in accordance with Test Method D1003.9.1.9 HazeTest in accordance with Test Method D1003.10. Certification and Inspection10.1 When specified in the purchase order or contrac
40、t, the purchaser shall be furnished certification that samples representingeach lot have been either tested or inspected as directed in this specification and the requirements have been met. When specifiedin the purchase order or contract, a report of the test results shall be furnished.10.2 Lot-acc
41、eptance inspection shall be the basis on which acceptance or rejection 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 tests specified for all requiremen
42、ts of the material under this specification.Supplier shall determine and use an inspection frequency which shall be adequate to ensure that the material is certifiable inaccordance with 10.4.10.4 Certification shall be that the material was manufactured, sampled, tested, and inspected in accordance
43、with thisspecification and that average values meet the requirements at a confidence level of 95 %.10.5 Any report made in accordance with 10.1 shall consist of the results of the lot-acceptance inspection of the shipment andthe results of the most recent periodic-check inspection.11. Packaging and
44、Marking11.1 All packing, packaging, and marking provisions of Practice D3892 shall apply to this specification.12. Keywords12.1 acrylic; acrylic plastic; cast acrylic; clear weatherable plastics; plastic; plastic materials; plastic rods; plastic shapes; plastictubes; PMMA; poly(methyl methacrylate);
45、 rods; shapes; transparent; tubesD5436 134SUMMARY OF CHANGESThis section identifies Committee D20 has identified the location of selected changes to this specification. Forthe convenience of thestandard since the last issue (D5436 user, Committee D20 has highlighted those changes 03(08) that may imp
46、act the use of this specification. This section may also include descriptions of the changesor the reasons for the changes, or both.standard. (October 1, 2013)D543603:(1) Removed permissive language throughout entire standard.(2) Added statement on primary units in 1.2.(3) Updated tolerances on temp
47、erature and humidity in 9.1.1 to be consistent with current test methods.(1) Revised “Deflection Temperature Under Flexural Load” requirements in Table 1 to be consistent with Specification D4802,Category A-1.(2) Deleted Figure 1 (Deflection Temperature vs. Thickness).D543699:(1) Revised Note 2.(2)
48、Revised text of Section 10.(3) Added Summary of Changes section.ASTM International 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 suc
49、h patent rights, and the riskof infringement of such rights, are entirely 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 should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you m
