TL52439_EN_2009-11-01.pdf
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1、Polyamide PipePolyamide Pipe Material Requirements Previous issuesPrevious issues TL 52439: 1995-02, 2002-10, 2008-12 ChangesChanges The following changes have been made as compared to TL 52439: 2008-12: Restriction regarding use with gasoline added Tests detailed Stricter limit values added ScopeSc
2、ope This Technical Supply Specification (TL standard) defines the material requirements for pipes made of polyamide 11 and polyamide 12 used, e.g., for diesel fuel lines. Smooth PA pipes acc. to TL 52439 must not be used for gasoline applications and their derivatives. DescriptionDescription PA pipe
3、 according to TL 52439PA pipe according to TL 52439 RequirementsRequirements General requirementsGeneral requirements Approval of first supply and changes according to Volkswagen standard VW 01155. Resistance to open-air weathering according to VW 50185. 1 1 2 2 3 3 3.1 3.1 Group StandardGroup Stand
4、ardTL 52439TL 52439 Issue 2009-11 Class. No.:55123 D D Descriptors:polyamide 11, polyamide 12, PA, PA11, PA12, pipe, fuel line Check standard for current issue prior to usage.Check standard for current issue prior to usage. This electronically generated standard is authentic and valid without signat
5、ure.This electronically generated standard is authentic and valid without signature. The English translation is believed to be accurate. In case of discrepancies the German version shall govern.The English translation is believed to be accurate. In case of discrepancies the German version shall gove
6、rn. Numerical notation acc. to ISO practice.Numerical notation acc. to ISO practice. Page 1 of 5 Technical responsibilityStandards Department GQL-LP/4Dr. Lars FlsterTel.: +49-5361-9-122549 GQL-LPDr. Roger Hillert EKDV/4 Ute Hager-SEKDV Tel.: +49-5361-9-49035Manfred Terlinden Confidential. All rights
7、 reserved. No part of this document may be transmitted or reproduced without prior permission of a Standards Department of the Volkswagen Group.Confidential. All rights reserved. No part of this document may be transmitted or reproduced without prior permission of a Standards Department of the Volks
8、wagen Group. Parties to a contract can only obtain this standard via the B2B supplier platform .Parties to a contract can only obtain this standard via the B2B supplier platform . Volkswagen Aktiengesellschaft Volkswagen AktiengesellschaftVWNORM-2008-12k Avoidance of hazardous substances according t
9、o VW 91101. Limit deviations according to DIN 73378. A complete examination requires prefabricated lines containing approximately 10 m of PA pipe. Forming must be made using the procedure planned for standard production. QualityQuality The pipes must be free of flaws and processing defects, such as
10、bubbles, voids, cracks, irregularities, and foreign matter. The pipes must exhibit no weak spots arising in connection with processing steps that are necessary for fabrication, such as beading operations or assembly of support sleeves and punch connectors. ManufactureManufacture Coextrusion method i
11、n which the pipe wall is made of two or more layers of the same material, optionally extrusion/thermoforming method. Marking according to Marking according to VDA 260VDA 260 PA11 PA12 AgingAging Prior to testing, the specimens required for the individual tests must be conditioned for at least 48 h i
12、n the ISO 55423/50 standard climate. Evaluation of measurement resultsEvaluation of measurement results The requirements apply to all points on the pipe or pipe assembly. The required numerical values apply to each individual measurement. Material requirementsMaterial requirements MaterialMaterial S
13、ee Section 6.1. Polyamide 11, stabilized against aging at elevated temperature and against light, or polyamide 12, stabilized against aging at elevated temperature and against light. Molding material designation according to Molding material designation according to DIN EN ISO 1874-1DIN EN ISO 1874-
14、1 PA11, EHL, 22-010 or PA12, EHL, 22-010 ColorColor According to drawing. Coloring must be uniform throughout. Required propertiesRequired properties See Table 1. 3.2 3.2 3.3 3.3 3.4 3.4 3.5 3.5 3.6 3.6 4 4 4.1 4.1 4.1.1 4.1.1 4.2 4.2 5 5 Page 2 TL 52439: 2009-11 D D Table 1Table 1 No.No.PropertiesP
15、ropertiesUnitUnitRequirementRequirement 1Density according to DIN EN ISO 1183-1, buoyancy method 1.1Pipe made of polyamide 11g/cm31,02 to 1,04 1.2Pipe made of polyamide 12g/cm31,00 to 1,02 2Extractable constituents see Section 6.2 % 3 3Yield stress in the direction of extru sion acc. to DIN EN ISO 5
16、27-2 and Section 6.3 MPa 32 4Elongation at break acc. to DIN EN ISO 527-2 and Section 6.3 % 100 5Equivalent stress acc. to DIN 53758 and Section 6.4 N/mm2 34 A bubble-shaped failure is required dur ing the accelerated internal pressure test, i.e., no brittle splitting (brittle frac ture) must occur.
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