1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev. 1 2012 07 23 Revised Removed spec number from Revision box. 2012 06 26 Activated A. Pan, APA Controlled document at www.MATS Copyright 2012, Ford Global Technologies, LLC Page 1 of 6 POLYBUTYLENE TEREPHTHALATE (PBT) WSS-M4D359-C1 INJECTI
2、ON MOLDING COMPOUND, GENERAL PURPOSE 1. SCOPE The material defined by this specification is a general purpose thermoplastic polyester injection molding compound based on polybutylene terephthalate (PBT). 2. APPLICATION This specification was released originally for material used for C520 glove box s
3、triker. 2.1 LIMITATIONS Material approved to this specification does not have high melt flow rate for direct metallized applications. Headlamp / rear lamp direct-metallized inner bezel application must use WSS-M4D1014-A. The material was not tested to WSS-M99P2222-C1 due to the typical size of compo
4、nents being smaller than 100 cm2or 100g. Use in larger components would require the additional testing to WSS-M99P2222-C1. 3. REQUIREMENTS 3.1 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements for Production Materi
5、als (WSS-M99P1111-A). 3.1.1 Many 4D resin specifications prior to 2011, identified certain requirements with the symbol (s), which indicated that the mean and +/- 3 sigma values were to be reported. The specification minimum, maximum or range was established using 3 sigma data. For 2011 and beyond,
6、refer to Table 1 for number of samples required for each test to meet specification limits. 3.1.2 This specification is based on virgin materials. Materials with post-consumer, post-industrial, or repolymerised recycled materials as defined by WRS-M99P42-A1 are preferred and should be used whenever
7、feasible. 3.1.3 The use of regrind is permitted, for economic / environmental reasons, with compliance as indicated in Ford Engineering CAD and Drafting Standard E-4. 3.1.4 Performance Criteria: All components using this material must comply with relevant SDS requirements. ENGINEERING MATERIAL SPECI
8、FICATION WSS-M4D359-C1 Copyright 2012, Ford Global Technologies, LLC Page 2 of 6 3.2 SAMPLE PREPARATION Unless otherwise specified all tests shall be carried out on injection molded, one-end gated test specimens. The test specimens A and D shall be molded using molding conditions defined in ISO 7792
9、-2. No annealing is allowed. See Tables 1 and 2 for the number of samples required. Specimens shall be as follows: Specimen A 150 minimum x 10 x 4.0 +/- 0.2 mm (ISO 527-2, Specimen Type 1A) Specimen B 355 x 100 x 1.0 +/- 0.1 mm (ISO 3795) Specimen C 145 x 60 x 3.2 +/- 0.2 mm Specimen D Center of Spe
10、cimen A, 80 x 10 x 4.0 +/- 0.2 mm Specimen E 100 mm diameter x 3.2 mm Specimen F 80 mm diameter x 3.2 mm Specimen G 90 mm x 200 mm Specimen H 50 +/- 1 mm diameter x 3.2 +/- 0.2 mm Specimen I 100 mm x 150 mm, min 3.3 MATERIAL PROPERTIES 3.3.1 Density 1.27 - 1.35 g/cm3(ISO 1183, Method A) 3.3.2 Tensil
11、e Strength at Yield 49 MPa min (ISO 527-1 At 23 +/- 2 C 4.8 kJ/m23.4.5.2 Impact Strength, Notched Izod; At -40 +/- 2 C 3.8 kJ/m23.4.6 Poissons Ratio 0.39 N/A 4.2 MATERIAL IDENTIFICATION FOR RECYCLING PURPOSES PBT (ISO 1043/ 11469) ENGINEERING MATERIAL SPECIFICATION WSS-M4D359-C1 Copyright 2012, Ford
12、 Global Technologies, LLC Page 6 of 6 Table 1: Minimum Sample Size Initial Approval New Manufacturing Location for Previously Approved Material Para. Test Minimum Lots Specimens per Lot Total Test Specimens Lots Specimens per lot Total Test Specimens 3.1 WSS-M99P1111-A 3.3.1 Density 1 3 3 3.3.2 Tens
13、ile Strength at Yield* 3 5 15 1 5 5 3.3.3 Elongation at Yield* 3 5 15 1 5 5 3.3.4 Tensile Modulus 1 10 10 3.3.5 Flexural Modulus* 3 10 30 1 10 10 3.3.6 Impact Strength Charpy, Notched (per condition)* 3 10 30 1 10 10 3.3.7 Heat Deflection Temperature* 3 2 6 1 2 2 3.3.8 Heat Aging Performance 3.3.8.1
14、 Tensile Strength at Yield, Change 1 5 5 3.3.8.2 Impact Strength, Notched Charpy, Change 1 10 10 3.3.9 Odor 1 9 9 3.3.10 Fogging Photometric 1 3 3 3.3.11 Flammability 1 5 5 3.4.1 Melt Flow Rate 1 1 1 3.4.2 Coefficient of Linear Thermal Expansion (per condition) 1 3 3 3.4.3 Mold Shrinkage 1 5 5 3.4.4 Melt Temperature 1 1 1 3.4.5 Impact Strength, Notched Izod (per condition) 1 10 10 3.4.6 Poissons Ratio 1 2 2 3.4.7 Curves - FTIR - TGA - DSC - CLTE - Engineering Stress/Strain at 23 C 1 1 1 per test * For these requirements the 3 sigma value from the raw data is used to meet the requirements.
