1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions REV 00 2012 04 30 Activated Replaces WSS-M4D938-A1 B. Haggart, Global Materials Team Controlled document at www.MATS Copyright 2012, Ford Global Technologies, LLC Page 1 of 7 THERMOPLASTIC ELASTOMER (TPO) MOLDING COMPOUND, WSS-M4D938-B1 MOLDE
2、D-IN-COLOR, INTERIOR, HIGH IMPACT 1. SCOPE The material defined by this specification is thermoplastic polyolefin elastomer (TPO) injection with improved cold temperature impact. 2. APPLICATION This specification was released originally for material used for stepwell scuff plates. 2.1 LIMITATIONS Th
3、is material is not intended for painted applications. 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). Note: Many 4D resin specifications prior to 201
4、1, 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 required for each test to esta
5、blish specification limits. 3.1.1 This specification is based on virgin materials, however materials with recycled content as defined by WRS-M99P42-A1 (post-consumer and/or post industrial recyclates and repolymerised recycled materials) should be used whenever technically feasible and following all
6、 materials and PV testing required by Ford Materials Engineering. The use of regrind is permitted, for economic / environmental reasons, with compliance as indicated in WSS-M99P1111-A. 3.1.2 Materials used in interior applications must meet the requirements outlined in WSS-M99P2222-C1/Latest, Perfor
7、mance, Vehicle Interior Environment Quality Material/Component Requirements. Data must be included in material submission package. 3.1.3 Performance Criteria: Parts using this specification shall meet the appropriate performance specification, WSS-M15P4-F/Latest for Hard, Interior, Molded-in-Color c
8、omponent performance. ENGINEERING MATERIAL SPECIFICATION WSS-M4D938-B1 Copyright 2012, Ford Global Technologies, LLC Page 2 of 7 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 mol
9、ded using molding conditions defined in ISO 1873-2. No annealing is allowed. See Table 1 for the number of specimens 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 6
10、0 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 APPEARANCE 3.3.1 Weathering Resistance Ra
11、ting 4 min (FLTM BO 116-01, 2481.6 kJ/m2 exposure Specimen C from smooth polished mold, ISO 105-A02 / AATCC Evaluation Procedure 1) Every 526.4kJ/m2 remove the samples from the weatherometer and allow them to cool for one hour. Conduct a tactile evaluation and report any tackiness. Visually evaluate
12、 and report any spewing or other exudation. After exposure the material shall show no fading or color change in excess of specified AATCC rating. In addition, there shall be no cracking, crazing or other deterioration. Use regional choice colors for initial approval and report color house used. For
13、color durability submissions, test all program colors. 3.3.2 Resistance to Scratch and Mar (FLTM BO 162-01, Specimen I) Scratch Rating 2 at 2 N, max Whitening/Color Change Rating 1 at 7 N, max Marring Rating 2 at 2 N, max These values are derived from colored and grained samples in agreement with Ma
14、terials Engineering. Details regarding color house, let down ratio, colors, grain, etc can be found in the approval package. 3.4 MATERIAL PROPERTIES 3.4.1 Density 0.88 0.92 g/cm3 (ISO 1183, Method A) 3.4.2 Tensile Strength at Yield 15 MPa min (ISO 527-1 Max Load Energy at 23 +/- 2 C 13 24 J 3.5.7.2
15、Impact Strength, Multiaxial; Max Load Energy at -40 +/- 2 C 20 30 J 4.2 MATERIAL IDENTIFICATION FOR RECYCLING PURPOSES PP + EPDM (ISO 1043) ENGINEERING MATERIAL SPECIFICATION WSS-M4D938-B1 Copyright 2012, Ford Global Technologies, LLC Page 6 of 7 Table 1: Number of Specimens Required Initial Approva
16、l New Manufacturing Location for Previously Approved Material Para. Test Lots Specimens per lot Total Test Specimens Lots Specimens per lot Total Test Specimens 3.1 WSS-M99P1111-A IR, TGA, DSC 1 1 1 per test 3.1.2 WSS-M99P2222-C1/latest Total Carbon, Hazardous Substances, Formaldehyde, Acraldehyde,
17、Acetaldehyde (See below for odor and fogging) 1 1 1 per test 3.3.1 Weathering Resistance 1 1 1 3.3.2 Resistance to Scratching 1 1 1 3.4.1 Density 1 3 3 3.4.2 Tensile Strength at Yield* 3 5 15 1 5 5 3.4.3 Elongation at Yield* 3 5 15 1 5 5 3.4.4 Tensile Modulus 1 10 10 3.4.5 Flexural Modulus* 3 10 30
18、1 10 10 3.4.6 Impact Strength, Notched Charpy (per condition)* 3 10 30 1 10 10 3.4.7 Heat Deflection Temperature* 3 2 6 1 2 2 3.4.8 Heat Aged Properties 3.4.8.1 Tensile Strength at Yield, Change 1 5 5 3.4.8.2 Impact Strength, Notched Charpy, Change 1 10 10 3.4.9 Odor 1 9 9 3.4.10 Fogging, Photometri
19、c 1 3 3 3.4.11 Fogging, Gravimetric 1 3 3 3.4.12 Flammability 1 5 5 3.5.1 Melt Flow Rate 1 1 1 3.5.2 Coefficient of Linear Thermal Expansion (per condition) 1 3 3 3.5.3 Mold Shrinkage 1 5 5 3.5.4 Poissons Ratio 1 2 2 3.5.5 Hardness Durometer D 1 5 measurements 1 3.5.6 Impact Strength, Notched Izod (
20、per condition) 1 10 10 3.5.7 Impact Strength, Multiaxial 3 10 30 1 10 10 * For these requirements the 3 sigma value from the raw data is used to meet the requirements. ENGINEERING MATERIAL SPECIFICATION WSS-M4D938-B1 Copyright 2012, Ford Global Technologies, LLC Page 7 of 7 Table 2: Color Property T
21、esting Minimum Color Property Testing Contact Materials Engineering for Color Test Work Plan 5. SUMMARY OF REVISIONS Para. Test Method Lots Specimens per Lot Total Test Specimens Color Test Direction 3.3.1 Weathering Resistance 1 1 1 Every Color 3.3.2 Scratch Resistance 1 1 1 As directed by Material
22、s Engineering 3.4.2 Tensile Strength at Yield 1 5 5 As directed by Materials Engineering 3.4.5 Flexural Modulus 1 10 10 As directed by Materials Engineering 3.4.6.1 Impact Strength, Notched Charpy at 23 +/- 2 C 1 10 10 As directed by Materials Engineering 3.4.9 Odor 1 9 9 As directed by Materials Engineering 3.4.11 Fogging Gravimetric 1 3 3 As directed by Materials Engineering 3.4.12 Flammability 1 5 5 Every Color
