1、Designation: D3295 15Standard Specification forPTFE Tubing, Miniature Beading and Spiral Cut Tubing1This standard is issued under the fixed designation D3295; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revisio
2、n. 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 U.S. Department of Defense.1. Scope*1.1 This specification covers PTFE tubing, mini
3、ature bead-ing and spiral cut tubing-manufactured from PTFE resinproduced from dispersion specified in Specification D4895.NOTE 1PTFE tube and rod manufactured from resin specified inSpecification D4894 are covered in Specification D1710.1.2 The values stated in SI units are to be regarded asstandar
4、d. The inch-pound units given in parentheses are forinformation only.1.3 The following hazard caveat pertains only to the testmethod portion, Section 8, of this specification: This standarddoes not purport to address all of the safety concerns, if any,associated with its use. It is the responsibilit
5、y of the user of thisstandard to establish appropriate safety and health practicesand determine the applicability of regulatory limitations priorto use.1.4 As PTFE resin produced from dispersion is not a truethermoplastic material, any reuse for the specification refer-enced above is impossible. How
6、ever, markets do exist fornon-virgin PTFE as additives and fillers.NOTE 2There is no known ISO equivalent to this standard.2. Referenced Documents2.1 ASTM Standards:2D618 Practice for Conditioning Plastics for TestingD638 Test Method for Tensile Properties of PlasticsD792 Test Methods for Density an
7、d Specific Gravity (Rela-tive Density) of Plastics by DisplacementD883 Terminology Relating to PlasticsD1600 Terminology forAbbreviated Terms Relating to Plas-ticsD1675 Test Methods for Polytetrafluoroethylene TubingD1708 Test Method for Tensile Properties of Plastics by Useof Microtensile Specimens
8、D1710 Specification for Extruded Polytetrafluoroethylene(PTFE) Rod, Heavy Walled Tubing and Basic ShapesD3892 Practice for Packaging/Packing of PlasticsD4894 Specification for Polytetrafluoroethylene (PTFE)Granular Molding and Ram Extrusion MaterialsD4895 Specification for Polytetrafluoroethylene (P
9、TFE)Resin Produced From Dispersion3. Terminology3.1 DefinitionsThe terminology given in TerminologiesD883 and D1600 is applicable to this specification.3.2 Description of Term Specific to This Standard:3.2.1 lota single production run, or a uniform blend of twoor more production runs.4. Classificati
10、on4.1 This specification provides for five groups of PTFEtubing, miniature beading and spiral cut tubing, differentiatedby size and type. The groups are further subdivided into classesbased on wall thickness.4.1.1 Group 01Tubing based upon the American WireGage (AWG) sizes.4.1.2 Group 02Tubing based
11、 upon fractional inch sizes.4.1.3 Group 03Tubing specified by inner diameter andwall thickness in Table 6 referred to as “Custom or Metric.”4.1.4 Group 04Tubing cut to form spiral wrap as in Table7.4.1.5 Group 05Miniature beading having diameters aslisted in Table 8.4.2 The types are further differe
12、ntiated in accordance withincreasing wall thickness as follows:4.2.1 Class 1Tubing having walls tabulated in Table 1listed as light wall.4.2.2 Class 2Tubing having walls of greater thicknessthan Class 1 listed as thin wall.4.2.3 Class 3Tubing having walls tabulated in Table 2listed as standard wall.
13、4.2.4 Class 4Tubing having walls tabulated in Table 3listed as chemical tubing.1This specification is under the jurisdiction of ASTM Committee D20 onPlastics and is the direct responsibility of Subcommittee D20.15 on ThermoplasticMaterials (Section D20.15.12).Current edition approved Sept. 1, 2015.
14、Published September 2015. Originallyapproved in 1974. Last previous edition approved in 2011 as D3295 - 06(2011).DOI: 10.1520/D3295-15.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume inf
15、ormation, refer to the standards Document Summary page onthe ASTM website.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States14.2.5 Class 5Tubing having walls tabulated in T
16、able 2 andTable 3 listed as heavy wall.4.3 A one-line system may be used to specify materialscovered by this specification. The system uses predefined cellsto refer to specific aspects of this specification, as illustratedbelow.SpecificationStandard Number:Block Group:Class: Grade:Special NotesExamp
17、le: SpecificationD3295 0101 1 24For this example, the line callout would be SpecificationD3295 01, 01124 and would specify tubing having wallsTABLE 1 Dimensions and Tolerances for Group 01 PTFE Tubing, mm (in.) (Classes 1 and 2)AWG SizeGradeInside DiameterClass 1Light Wallmin max nom min max30 0.25
18、(0.010) 0.38 (0.015) 0.15 (0.006) 0.10 (0.004) 0.20 (0.008)28 0.33 (0.013) 0.46 (0.018) 0.15 (0.006) 0.10 (0.004) 0.20 (0.008)26 0.41 (0.016) 0.53 (0.021) 0.15 (0.006) 0.10 (0.004) 0.20 (0.008)24 0.51 (0.020) 0.66 (0.026) 0.15 (0.006) 0.10 (0.004) 0.20 (0.008)22 0.64 (0.025) 0.81 (0.032) 0.15 (0.006
19、) 0.10 (0.004) 0.20 (0.008)20 0.81 (0.032) 1.01 (0.040) 0.15 (0.006) 0.10 (0.004) 0.20 (0.008)19 0.91 (0.036) 1.12 (0.044) 0.15 (0.006) 0.10 (0.004) 0.20 (0.008)18 1.02 (0.040) 1.25 (0.049) 0.15 (0.006) 0.10 (0.004) 0.20 (0.008)17 1.14 (0.045) 1.37 (0.054) 0.15 (0.006) 0.10 (0.004) 0.20 (0.008)16 1.
20、30 (0.051) 1.55 (0.061) 0.15 (0.006) 0.10 (0.004) 0.20 (0.008)15 1.45 (0.057) 1.70 (0.067) 0.15 (0.006) 0.10 (0.004) 0.20 (0.008)14 1.65 (0.064) 1.88 (0.074) 0.20 (0.008) 0.15 (0.006) 0.25 (0.010)13 1.83 (0.072) 2.08 (0.082) 0.20 (0.008) 0.15 (0.006) 0.25 (0.010)12 2.06 (0.081) 2.31 (0.091) 0.20 (0.
21、008) 0.15 (0.006) 0.25 (0.010)11 2.31 (0.091) 2.57 (0.101) 0.20 (0.008) 0.15 (0.006) 0.25 (0.010)10 2.59 (0.102) 2.85 (0.112) 0.20 (0.008) 0.15 (0.006) 0.25 (0.010)9 2.90 (0.114) 3.15 (0.124) 0.20 (0.008) 0.15 (0.006) 0.25 (0.010)8 3.28 (0.129) 3.58 (0.141) 0.20 (0.008) 0.15 (0.006) 0.25 (0.010)7 3.
22、66 (0.144) 4.01 (0.158) 0.20 (0.008) 0.15 (0.005) 0.25 (0.011)6 4.12 (0.162) 4.52 (0.178) 0.25 (0.010) 0.18 (0.007) 0.33 (0.013)5 4.62 (0.182) 5.03 (0.198) 0.25 (0.010) 0.18 (0.007) 0.33 (0.013)4 5.18 (0.204) 5.69 (0.224) 0.25 (0.010) 0.18 (0.007) 0.33 (0.013)3 5.82 (0.229) 6.33 (0.249) 0.25 (0.010)
23、 0.18 (0.007) 0.33 (0.013)2 6.55 (0.258) 7.06 (0.278) 0.25 (0.010) 0.18 (0.007) 0.33 (0.013)1 7.34 (0.289) 7.90 (0.311) 0.25 (0.010) 0.18 (0.007) 0.33 (0.013)0 8.26 (0.325) 8.81 (0.347) 0.25 (0.012) 0.22 (0.009) 0.38 (0.015)AWG SizeGradeInside DiameterClass 2Thin Wallmin max nom min max30 0.25 (0.01
24、0) 0.38 (0.015) 0.23 (0.009) 0.19 (0.007) 0.28 (0.011)28 0.33 (0.013) 0.48 (0.019) 0.23 (0.009) 0.18 (0.007) 0.28 (0.011)26 0.41 (0.016) 0.56 (0.022) 0.23 (0.009) 0.18 (0.007) 0.28 (0.011)24 0.51 (0.020) 0.69 (0.027) 0.25 (0.010) 0.18 (0.007) 0.33 (0.013)22 0.64 (0.025) 0.81 (0.032) 0.25 (0.010) 0.1
25、8 (0.007) 0.33 (0.013)20 0.81 (0.032) 1.01 (0.040) 0.31 (0.012) 0.23 (0.009) 0.38 (0.015)19 0.91 (0.036) 1.11 (0.044) 0.31 (0.012) 0.23 (0.009) 0.38 (0.015)18 1.02 (0.040) 1.25 (0.049) 0.31 (0.012) 0.23 (0.009) 0.38 (0.015)17 1.14 (0.045) 1.38 (0.054) 0.31 (0.012) 0.23 (0.009) 0.38 (0.015)16 1.30 (0
26、.051) 1.55 (0.061) 0.31 (0.012) 0.23 (0.009) 0.38 (0.015)15 1.45 (0.057) 1.70 (0.067) 0.31 (0.012) 0.23 (0.009) 0.38 (0.015)14 1.63 (0.064) 1.88 (0.074) 0.31 (0.012) 0.23 (0.009) 0.38 (0.015)13 1.83 (0.072) 2.08 (0.082) 0.31 (0.012) 0.23 (0.009) 0.38 (0.015)12 2.06 (0.081) 2.31 (0.091) 0.31 (0.012)
27、0.23 (0.009) 0.38 (0.015)11 2.31 (0.091) 2.57 (0.101) 0.31 (0.012) 0.23 (0.009) 0.38 (0.015)10 2.59 (0.102) 2.85 (0.112) 0.31 (0.012) 0.23 (0.009) 0.38 (0.015)9 2.90 (0.114) 3.15 (0.124) 0.38 (0.015) 0.31 (0.012) 0.46 (0.018)8 3.28 (0.129) 3.58 (0.141) 0.38 (0.015) 0.31 (0.012) 0.46 (0.018)7 3.66 (0
28、.144) 4.01 (0.158) 0.38 (0.015) 0.31 (0.012) 0.46 (0.018)6 4.12 (0.162) 4.52 (0.178) 0.38 (0.015) 0.31 (0.012) 0.46 (0.018)5 4.62 (0.182) 5.03 (0.198) 0.38 (0.015) 0.35 (0.012) 0.46 (0.018)4 5.18 (0.204) 5.69 (0.224) 0.38 (0.015) 0.35 (0.012) 0.46 (0.018)3 5.82 (0.229) 6.33 (0.249) 0.38 (0.015) 0.35
29、 (0.012) 0.46 (0.018)2 6.55 (0.258) 7.06 (0.278) 0.38 (0.015) 0.35 (0.012) 0.46 (0.018)1 7.34 (0.289) 7.90 (0.311) 0.38 (0.015) 0.35 (0.012) 0.46 (0.018)0 8.26 (0.325) 8.81 (0.347) 0.38 (0.015) 0.35 (0.012) 0.46 (0.018)D3295 152listed as light wall that has all the properties listed for thatgroup, c
30、lass and grade in the appropriate specified properties,tables, or both, in the specification identified. These shall bebased on AWG size within the group and class. Grade will bethe AWG size designation. Only Groups 01 and 02 shall haverequirements for Class and no separator is needed.5. Physical Pr
31、operties5.1 The tubing and miniature beading shall be made ofPTFE meeting the requirements of Specification D4895 andmay contain a maximum of two mass percentage of additive.5.2 The melting point for all Groups of tubing, and minia-ture beading shall be 327 6 10C (621 6 18F) whenmeasured in accordan
32、ce with 8.1.4.5.3 The inside diameter, wall thickness, pitch and tolerancesof the tubing, miniature beading and spiral cut tubing shall beas shown in Tables 1-3 and Tables 6-8 when determined inaccordance with 8.1.3.1 and 8.1.3.2.5.4 The specific gravity of the tubing and miniature beadingshall be a
33、s specified in Table 4 when determined in accordancewith 8.1.5.5.5 The weight loss of the tubing and miniature beadingshall not exceed 0.05 % when determined in accordance with8.1.6.5.6 The tubing and miniature beading shall have tensileproperties as specified in Table 4 and a minimum elongation of2
34、00 % when determined in accordance with 8.1.7.TABLE 2 Dimensions and Tolerances for Group 01 PTFE Tubing, mm (in.) (Classes 3 and 4)AWG SizeGradeInside DiameterClass 3Standard Wallmin max nom min max30 0.25 (0.010) 0.38 (0.015) 0.23 (0.009) 0.18 (0.007) 0.28 (0.011)28 0.33 (0.013) 0.48 (0.019) 0.23
35、(0.009) 0.18 (0.007) 0.28 (0.011)26 0.41 (0.016) 0.56 (0.022) 0.23 (0.009) 0.18 (0.007) 0.28 (0.011)24 0.51 (0.020) 0.67 (0.027) 0.31 (0.012) 0.25 (0.010) 0.36 (0.014)22 0.64 (0.025) 0.81 (0.032) 0.31 (0.012) 0.25 (0.010) 0.36 (0.014)20 0.81 (0.032) 1.02 (0.040) 0.41 (0.016) 0.33 (0.013) 0.48 (0.019
36、)19 0.91 (0.036) 1.11 (0.044) 0.41 (0.016) 0.33 (0.013) 0.48 (0.019)18 1.02 (0.040) 1.25 (0.049) 0.41 (0.016) 0.33 (0.013) 0.48 (0.019)17 1.14 (0.045) 1.37 (0.054) 0.41 (0.016) 0.33 (0.013) 0.48 (0.019)16 1.30 (0.051) 1.55 (0.061) 0.41 (0.016) 0.33 (0.013) 0.48 (0.019)15 1.45 (0.057) 1.70 (0.067) 0.
37、41 (0.016) 0.33 (0.013) 0.48 (0.019)14 1.63 (0.064) 1.88 (0.074) 0.41 (0.016) 0.33 (0.013) 0.48 (0.019)13 1.83 (0.072) 2.08 (0.082) 0.41 (0.016) 0.33 (0.013) 0.48 (0.019)12 2.06 (0.081) 2.31 (0.091) 0.41 (0.016) 0.33 (0.013) 0.48 (0.019)11 2.31 (0.091) 2.57 (0.101) 0.41 (0.016) 0.33 (0.013) 0.48 (0.
38、019)10 2.59 (0.102) 2.85 (0.112) 0.41 (0.016) 0.33 (0.013) 0.48 (0.019)9 2.90 (0.114) 3.15 (0.124) 0.51 (0.020) 0.41 (0.016) 0.61 (0.024)8 3.28 (0.129) 3.58 (0.141) 0.51 (0.020) 0.41 (0.016) 0.61 (0.024)7 3.66 (0.144) 4.01 (0.158) 0.51 (0.020) 0.41 (0.016) 0.61 (0.024)6 4.12 (0.162) 4.52 (0.178) 0.5
39、1 (0.020) 0.41 (0.016) 0.61 (0.024)5 4.62 (0.182) 5.03 (0.198) 0.51 (0.020) 0.41 (0.016) 0.61 (0.024)4 5.18 (0.204) 5.69 (0.224) 0.51 (0.020) 0.41 (0.016) 0.61 (0.024)3 5.82 (0.229) 6.33 (0.249) 0.51 (0.020) 0.41 (0.016) 0.61 (0.024)2 6.55 (0.258) 7.06 (0.278) 0.51 (0.020) 0.41 (0.016) 0.61 (0.024)1
40、 7.34 (0.289) 7.90 (0.311) 0.51 (0.020) 0.41 (0.016) 0.61 (0.024)0 8.26 (0.325) 8.81 (0.347) 0.51 (0.020) 0.41 (0.016) 0.61 (0.024)AWG SizeGradeInside DiameterClass 5Heavy Wallmin max nom min max24 0.51 (0.020) 0.69 (0.027) 0.41 (0.016) 0.33 (0.013) 0.48 (0.019)22 0.64 (0.025) 0.81 (0.032) 0.41 (0.0
41、16) 0.33 (0.013) 0.48 (0.019)20 0.81 (0.032) 1.02 (0.040) 0.46 (0.018) 0.38 (0.015) 0.53 (0.021)19 0.91 (0.036) 1.12 (0.044) 0.51 (0.020) 0.41 (0.016) 0.61 (0.024)18 1.02 (0.040) 1.25 (0.049) 0.51 (0.020) 0.41 (0.016) 0.61 (0.024)17 1.14 (0.045) 1.37 (0.054) 0.51 (0.020) 0.41 (0.016) 0.61 (0.024)16
42、1.30 (0.051) 1.55 (0.061) 0.51 (0.020) 0.41 (0.016) 0.61 (0.024)15 1.45 (0.057) 1.70 (0.067) 0.51 (0.020) 0.41 (0.016) 0.61 (0.024)14 1.63 (0.064) 1.88 (0.074) 0.51 (0.020) 0.41 (0.016) 0.61 (0.024)13 1.83 (0.072) 2.08 (0.082) 0.51 (0.020) 0.41 (0.016) 0.61 (0.024)12 2.06 (0.081) 2.31 (0.091) 0.51 (
43、0.020) 0.41 (0.016) 0.61 (0.024)11 2.31 (0.091) 2.57 (0.101) 0.51 (0.020) 0.41 (0.016) 0.61 (0.024)10 2.59 (0.102) 2.85 (0.112) 0.64 (0.025) 0.51 (0.020) 0.76 (0.030)9 2.90 (0.114) 3.15 (0.124) 0.64 (0.025) 0.51 (0.020) 0.76 (0.030)8 3.28 (0.129) 3.58 (0.141) 0.76 (0.030) 0.64 (0.025) 0.89 (0.035)7
44、3.65 (0.144) 4.01 (0.158) 0.76 (0.030) 0.64 (0.025) 0.89 (0.035)6 4.12 (0.162) 4.52 (0.178) 0.76 (0.030) 0.64 (0.025) 0.89 (0.035)5 4.62 (0.182) 5.03 (0.198) 0.81 (0.032) 0.69 (0.027) 0.94 (0.037)D3295 1535.7 The tubing shall be a minimum dielectric breakdown asshown in Table 5 when determined in ac
45、cordance with 8.1.8.5.8 The inside diameter of the tubing shall be within theapplicable tolerance limits after subjection to the thermaltreatment of 8.1.9.5.9 The color of the tubing shall be as agreed upon betweenthe purchaser and the seller. The tubing shall exhibit nosignificant change in color a
46、fter heat-aging in accordance with8.1.10.TABLE 3 Dimensions and Tolerances for Group 02 PTFE Tubing, mm (in.)FractionalSizesInside Diameter Wall ThicknessClass 1, 2, 3 Class 1 Class 2 Class 3nom min max nom min max nom min max nom min max0.79 (132 ) 0.79(0.031)0.74(0.031)0.84(0.033)0.15(0.006)0.10(0
47、.004)0.20(0.008)0.25(0.010)0.20(0.008)0.31(0.012)0.31(0.012)0.25(0.010)0.36 (0.014)1.6 (116)1.7(0.066)1.6(0.063)1.85(0.072)0.20(0.008)0.15(0.006)0.25(0.010)0.31(0.012)0.23(0.009)0.38(0.015)0.41(0.016)0.33(0.013)0.48 (0.019)2.4 (332)2.4(0.094)2.3(0.091)2.5(0.099)0.20(0.008)0.15(0.006)0.25(0.010)0.31(
48、0.012)0.23(0.009)0.38(0.015)0.41(0.016)0.33(0.013)0.48 (0.019)3.2 (18 )3.2(0.126)3.1(0.122)3.3(0.130)0.20(0.008)0.15(0.006)0.25(0.010)0.38(0.015)0.28(0.011)0.48(0.019)0.51(0.020)0.40(0.016)0.61 (0.024)4.8 (316)4.7(0.185)4.6(0.181)5.0(0.198)0.25(0.010)0.18(0.007)0.33(0.013)0.38(0.015)0.28(0.011)0.48(
49、0.019)0.51(0.020)0.40(0.016)0.61 (0.024)6.4 (14 )6.5(0.255)6.4(0.252)6.6(0.260)0.24(0.009)0.18(0.007)0.33(0.013)0.38(0.015)0.28(0.011)0.48(0.019)0.51(0.020)0.40(0.016)0.61 (0.024)7.9 (516)8.1(0.319)8.0(0.315)8.2(0.332)0.31(0.012)0.23(0.009)0.38(0.015)0.38(0.015)0.28(0.011)0.48(0.019)0.51(0.020)0.40(0.016)0.61 (0.024)9.5 (38 )9.7(0.381)9.5(0.374)9.8(0.385)0.38(0.015)0.31(0.012)0.46(0.018)0.38(0.015)0.30(0.012)0.46(0.018)0.64(0.025)0.48(0.019)0.79 (0.031)11.1 (716 )11.3(0.445)11.1(0.437)11.7(0.460)0.46(0.018)0.38(0.015)0.53(0.021)0.46(0.018)0.36(0.014)0.56
