1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions Rev. 1 2011 10 04 Revised Editorial changes to 3.1. 2011 05 10 Active Reformatted B1 and new B2 suffix V.Cerato, FoE Controlled document at www.MATS Copyright 2011, Ford Global Technologies, LLC Page 1 of 5 POLYPROPYLENE (PP) HOMOPOLYMER, 20%
2、MINERAL WSS-M4D729-B1 FILLED, MOLDING COMPOUND POLYPROPYLENE (PP), 20% MINERAL FILLED, WRS-M4D729-B2 MOLDING COMPOUND, 50% PCR AND/OR PIR CONTENT 1. SCOPE The material defined by this specification is a 20% mineral (talc) filled injection molding compound based on polypropylene. Material with recycl
3、ed content should be used whenever feasible. 2. APPLICATION This specification was released originally for material used for rear lamp bulb holder cover and head lamp housing, battery tray, heater and A/C unit, engine air cleaner and engine NVH cover. 2.1 LIMITATIONS These materials have low impact
4、resistance at low temperatures. Production level materials must be used in preparing test parts / panels. The use of improper sample prep materials can influence test results. For applications that have a direct impact on the interior air quality, such as heater and A/C unit please note that the odo
5、ur test is required as prescribed in the relevant performance specification. 3. REQUIREMENTS 3.1 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.1.1 Many 4D resin spec
6、ifications 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, refer to Table 1 for number of samples require
7、d for each test to establish specification limits. 3.1.2 WSS-M4D729-B1 is based on virgin materials. 3.1.3 WRS-M4D729-B2 must contain 50% Post Consumer Recycled (PCR) and/or Post Industrial Recycled (PIR) content as defined by WRS-M99P42-A1. The remaining portion of the material can come from virgin
8、 sources. 3.1.4 The use of regrind is permitted for economic and environmental reasons with compliance as indicated in WSS-M99P1111-A. ENGINEERING MATERIAL SPECIFICATIONWSS-M4D729-B1 / WRS-M4D729-B2 Copyright 2011, Ford Global Technologies, LLC Page 2 of 5 (ISO 527-1 and ISO 527-2, Specimen A, 3.1.5
9、 Performance Criteria: Parts using this material must comply with all the requirements of WSK-M98P10-A/ Latest for exterior lighting application or WSS-M15P50-B / Latest for engine compartment and underbody applications 3.2 SAMPLE PREPARATION Unless otherwise specified all tests shall be carried out
10、 on injection molded, one-end gated test specimens. The test specimens A and D shall be molded using molding conditions defined in ISO 1873-2. 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) Sp
11、ecimen C 145 x 60 x 3.2 +/- 0.2 mm Specimen D Center of Specimen 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
12、 Filler Content 18 - 23% (ISO 3451-1, Method A, talc filler, 1 h at 750 +/- 25 C, test portion 2 to 2.5 g) 3.3.2 Density 1.03 - 1.15 g/cm3(ISO 1183, Method A) 3.3.3 Tensile Strength at Yield 27 MPa min test speed:50 mm/minute) 3.3.4 Tensile Modulus 2.0 GPa min (ISO 527-1 Flow Cross Flow 7.7 11.7 E-5
13、 mm/mm/ C E-5 mm/mm/C 3.4.7 Poissons Ratio 0.43 Ratio 4.2 MATERIAL IDENTIFICATION FOR RECYCLING PURPOSES PP-TD20 (ISO 1043) ENGINEERING MATERIAL SPECIFICATIONWSS-M4D729-B1 / WRS-M4D729-B2 Copyright 2011, Ford Global Technologies, LLC Page 5 of 5 Table 1: Minimum Sample Size Initial Approval New Manu
14、facturing Location for Previously Approved Material Test Minimum Lots Specimens per lot Total Test SpecimensLots Specimens per lot Total Test Specimens3.3.1 Filler Content* 3 1 3 1 1 1 3.3.2 Density 1 3 3 3.3.3 Tensile Strength at Yield* 3 5 15 1 5 5 3.3.4 Tensile Modulus 1 10 10 3.3.5 Flexural Modu
15、lus* 3 10 30 1 10 10 3.3.6 Impact Strength Notched Izod (per condition)* 3 10 30 1 10 10 3.3.7 Heat Deflection Temperature* 3 2 6 1 2 2 3.3.8 Heat Aged Performance 3.3.8.1 Tensile Strength at Yield Change 1 5 5 3.3.8.2 Impact Strength, Notched Izod Change 1 10 10 3.3.9 Fogging 1 3 3 3.3.10 Flammabil
16、ity 1 5 5 3.4.1 Melt Flow Rate 3 1 3 3.4.2 Heat Deflection Temperature 3 2 6 3.4.3 Impact Strength, Notched Charpy (per condition) 3 10 30 3.4.4 Elongation at Yield 3 5 15 3.4.5 Mold Shrinkage 1 5 5 3.4.6 Coefficient of Linear Thermal Expansion (per condition) 1 3 3 3.4.7 Poissons Ratio 1 5 5 * For these requirements, the 3 Sigma value from the raw data is used to set the requirement max or min. 5.0 SUMMARY OF REVISIONS 2011 10 04 Editorial changes to 3.1.1 to 3.1.4 2011 05 10 Adopted new format. Added new WRS version
