TL_52652_ASA+PC

Confidential. All rights reserved. No part of this document may be transmitted or reproduced without the prior written permission of a Standards Department of the Volkswagen Group.Parties to a contract can only obtain this standard via the responsible procurement department.© VOLKSWAGEN AGT h e E n g l i s h t r a n s l a t i o n i s b e l i e v e d t o b e a c c u r a t e . I n c a s e o f d i s c r e p a n c i e s t h e G e r m a n v e r s i o n s h a l l g o v e r n .Page 2TL 526 52: 2004-11D3.1.1 AppearanceThe surface and interior of the finished parts must be free of flaws and processing defects such as flow lines, voids, cracks or the like. Sink marks at the base of ribs and reinforcements are permissible only if they do not adversely affect the part's function or appearance. The finished parts shall permit proper assembly.3.1.2 Physiological compatibilityThe materials used must be physiologically safe. Substances that are emitted at elevated temperatures must be toxicologically safe.3.2 ManufactureInjection molding method.3.3 TypesTL 526 52-A PC+ASA polymer blend with increased dimensional stability under heat up to +120 °CTL 526 52-B ASA+PC polymer blend, standard type, with dimensional stability under heat up to +100 °C3.4 Identification according to VDA 260TL 524 52-A >PC+ASA<TL 526 52-B >ASA+PC<3.5 ConditioningPrior to testing, the specimens required for the individual tests must be conditioned for at least 48 h in the DIN 50014-23/50-2 standard climate.3.6 Evaluation of the measuring resultsThe required numerical values apply to each individual measurement.3.7 MaterialSee Section 5.1.Both types: polymer blends of polycarbonate and acrylic ester modified styrene acrylonitrile copolymer, UV-stabilized3.8 ColorAccording to drawing and/or release.Page 3TL 526 52: 2004-11D 4 PropertiesSee Table 1.Table 1No.Property Unit RequirementType A Type B1 Density acc. to DIN EN ISO 1183-1,buoyancy methodg/cm3 1.15 to 1.17 1.11 to 1.15 2 Flexural strength acc. to DIN EN ISO 178see Section 5.2MPa 90 803 Impact resistanceacc. to DIN EN ISO 179-1test method 1/eUsee Section 5.3kJ/m2No fracture4 Notched impact strengthacc. to DIN EN ISO 179-1test method 1/eAsee Section 5.4kJ/m2 45 85 Notched impact strengthacc. to DIN EN ISO 179-1see Section 5.4kJ/m2 106 Dimensional stability under heat acc. toVicat and DIN EN ISO 306, method B50°C 125 1067 Elevated-temperature behavior acc. toDIN 53497see Section 5.57.1 Aging temperature (120 ± 1) °C The finished partsmust exhibit nochange in form,color or surfaceappearance.-7.2 Aging temperature (90 ± 2) °C - The finished partsmust exhibit nochange in form,color or surfaceappearance.8 Low-temperature behaviorsee Section 5.6 The finished parts shall remainfully functional at low temperatures; there shall be no damage. They shall not exhibit cracks or other damages, neither at low temperatures nor after subsequently raising the temperature to +23 °C. Refer to drawing for special requirements.9 Lightfastness acc. to Test SpecificationPV 1303see Section 5.7(Requirement only applies to visible partsin the vehicle interior or if specified in thedrawing.)Number of exposure periods accordingto drawing. The exposed surface shall not exhibit changes as comparedto the as-received condition, such as change in color, chalking and/or cracking.Gray-scale level 4 acc. toDIN EN 20105-A02.Page 4TL 526 52: 2004-115 Notes on testing5.1 MaterialThe identification test is performed using infrared spectroscopy.5.2 Flexural strengthDetermination of the flexural tension at maximum load according to DIN EN ISO 178, however, specimen length (50 ± 1) mm; width (6 ± 0.2) mm; thickness corresponding to product thickness (up to max. 4 mm); support separation 40 mm; bearing surface radius 1.0 mm to 1.2 mm; test rate (14 ± 1) mm/min. Specimens taken from finished parts with one-sided graining shall be placed on the bearing surfaces of the testing device in such a manner that the grained side faces toward the pressure fin.5.3 Impact resistanceIf, for reasons concerning the devices and/or the specimen size and shape, a test according to DIN EN ISO 179-1, test method 1/eU, proves to be impossible, the following procedure can be implemented as an alternative:Impact resistance test (broadside impact) according to DIN EN ISO 179-1, however, specimen length (50 ± 1) mm; width (6 ± 0.2) mm; thickness corresponding to product thickness (up to max. 4 mm); mounting flange spacing (support separation) 40 mm; pendulum impact tester 4J. Specimens taken from finished parts with one-sided graining shall be positioned on the mounting flange of the pendulum impact tester with the non-grained side opposing the direction of impact. However, this is subject to prior agreement.Page 5TL 526 52: 2004-11D5.4 Notched impact strengthPendulum impact tester 4J.If, for reasons concerning the devices and/or the specimen size and shape, a test according to DIN EN ISO 179-1, test method 1/eA proves to be impossible, the following procedure can be implemented as an alternative:Impact resistance test (broadside impact) according to DIN EN ISO 179-1, however, specimen length (50 ± 1) mm; width (6 ± 0.2) mm; thickness corresponding to product thickness (up to max. 4 mm); mounting flange spacing (support separation) 40 mm.The specimens are given a 0.8 mm wide U-shaped notch on the broad side. The notch depth shall be 1/3 of the specimen thickness. The edges adjoining the base of the notch must have a curvature radius of < 0.1 mm.Specimens taken from finished parts with a one-sided graining shall be notched on the grained side and subsequently placed on the mounting flanges of the pendulum impact tester in such a manner that the center of the notch lies precisely within the impact plane. It shall be ensured that the notch faces away from the direction of impact.However, this is subject to prior agreement.5.5 Elevated-temperature behaviorAging at elevated temperature test according to DIN 53497, method B, to be performed on at least one complete finished part. Aging period (22 + 2) h.5.6 Low-temperature behaviorAging of at least one complete finished part in air at (-40 ± 1) °C; aging period: (22 + 2) h.5.7 LightfastnessIf the number of exposure periods is not defined in the drawing, the following rule applies:3 periods of exposure for components in areas with indirect sun radiation.5 periods of exposure for components in areas with direct sun radiation (e.g., door upper trim).10 periods of exposure for components in areas subject to the highest sun radiation(e.g., rear shelf).5.8 Impact resistance after artificial weatheringSpecimens: (50 ± 1) mm in length, (6 ± 0.2) mm in width, thickness according to finished part thickness (up to a maximum of 4 mm).At least 5 specimens shall be artificially weathered according to PV 3930 in a testing device for 200 h. The side of the specimen corresponding to the visible side of the finished part (functional side) is turned toward the light. Contact of the narrow edges of specimens is permissible. The impact resistance test to follow the artificial weathering is performed according to Section 5.4. The specimens are placed on the mounting flange of the pendulum impact tester so that the unweathered side faces the direction of impact.Page 6TL 526 52: 2004-11D6 Referenced standards*)TL 1010 Materials for Vehicle Interiors; Flammability, Material RequirementsPV 1303 Non-Metallic Materials;Exposure Test of Passenger Compartment ComponentsPV 3930 Non-Metallic Materials; Weathering in Moist, Hot ClimateVW 011 55 Vehicle Supply Parts; Approval of First Supply and ChangesVW 501 80 Components in Passenger Compartment; Emission BehaviorVW 501 85 Vehicle Components; Resistance to Open Air WeatheringVW 501 90 Components of the Vehicle Interior Trim; Colorimetric EvaluationVW 911 01 Environmental Standard for Vehicles; Vehicle Parts, Materials, Operating Fluids; Avoidance of Hazardous SubstancesDIN 50014 Climates and their Technical Application; Standard AtmospheresDIN 53497 Testing of Plastics; Hot Storage Test on Mouldings Made of Thermoplastic Moulding Materials without External Mechanical StressingDIN EN 20105-A02 Textiles – Tests for Colour Fastness – Part A02: Grey Scale for Assessing Change in ColourDIN EN ISO 178 Plastics – Determination of Flexural PropertiesDIN EN ISO 179-1 Plastics – Determination of Charpy Impact Properties – Part 1: Non-Instrumented Impact TestDIN EN ISO 306 Plastics – Thermoplastic Materials – Determination of Vicat Softening Temperature (VST)DIN EN ISO 1183-1 Plastics – Methods for Determining the Density of Non-Cellular Plastics – Part 1: Immersion Method, Liquid Pyknometer Method and Titration Method VDA 260 Bauteile von Kraftfahrzeugen; Kennzeichnung der Werkstoffe (Components for Motor Vehicles; Identification of Materials – only available in German)*)In this section, terminological inconsistencies may occur as the original titles are used.。