1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions REV 00 2011 09 02 Activated Replaces WSS-M4D840-A1 B. Haggart, FNA Controlled document at www.MATS Copyright 2011, Ford Global Technologies, LLC Page 1 of 7 ACETAL (POM) COPOLYMER, MOLDED-IN-COLOR, WSS-M4D840-B1 INTERIOR, MELT FLOW RATE 7 11
2、g/10 MINUTES 1. SCOPE The material defined by this specification is a molded-in-color thermoplastic acetal copolymer based on trioxane for interior use. 2. APPLICATION This specification was released originally for materials used for decorative and/or functional interior automotive applications such
3、 as loudspeaker grilles, bin latches, and moving parts such as links and sliders. 2.1 LIMITATIONS This 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 Req
4、uirements For Production Materials (WSS-M99P1111-A). Note: 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 si
5、gma data. For 2011 and beyond, refer to Table 1 for number of samples required for each test to establish 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
6、and repolymerised recycled materials) should be used whenever technically feasible and following all 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
7、 used in interior applications must meet the requirements outlined in WSS-M99P2222-B1/Latest, Performance, 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
8、 the appropriate performance specification, WSS-M15P4-F/Latest for Hard, Interior, Molded-in-Color component performance. ENGINEERING MATERIAL SPECIFICATION WSS-M4D840-B1 Copyright 2011, Ford Global Technologies, LLC Page 2 of 7 3.2 SAMPLE PREPARATION Unless otherwise specified all tests shall be ca
9、rried out on injection molded, one-end gated test specimens. The test specimens A and D shall be molded using molding conditions defined in ISO 9988-2. Annealing is allowed for unaged specimens for property comparison to Heat Aging samples only. See Table 1 for the number of specimens required. Spec
10、imens 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 Specimen A. 80 x 10 x 4.0 +/- 0.2 mm Specimen E 100 mm diameter x 3.2 mm Specimen F 80 mm d
11、iameter 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 Rating 4 min (FLTM BO 116-01, 2481.6 kJ/m2 exposure Specimen C from smooth polished mold, ISO 105-A02 / AATCC Evaluation Procedure 1)
12、 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 and report any spewing or other exudation. After exposure the material shall show no fading or color change in excess of specified
13、 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 color durability submissions, test all program colors. 3.4 MATERIAL PROPERTIES 3.4.1 Melt Flow Rate 7 11 g/10 minutes (ISO 1133, 19
14、0 C, 2.16 kg) 3.4.2 Density 1.39 1.43 g/cm3 (ISO 1183, Method A) 3.4.3 Tensile Strength at Yield 57 MPa min (ISO 527-1 and ISO 527-2, Specimen A 50 mm/minute test speed) 3.4.4 Elongation at Yield 6.9 % min (ISO 527-1 and ISO 527-2, Specimen A, 50 mm/minute test speed) 3.4.5 Tensile Modulus 2.6 GPa m
15、in (ISO 527-1 and ISO 527-2, Specimen A, 1 mm/minute test speed) ENGINEERING MATERIAL SPECIFICATION WSS-M4D840-B1 Copyright 2011, Ford Global Technologies, LLC Page 3 of 7 3.4.6 Flexural Modulus 2.1 GPa min (ISO 178, Specimen D, 64 mm support span, 2 mm/minute test speed) 3.4.7 Impact Strength, Notc
16、hed Izod (ISO 180/1A, Specimen D) 3.4.7.1 At 23 +/- 2 C 3.7 kJ/m2 min Report Break Type 3.4.7.2 At -40 +/- 2 C 2.4 kJ/m2 min Report Break Type The test specimens must be conditioned for min of 6 h at the above specified temperature prior to impact test. Low temperature testing shall be done within t
17、he cold box, if not possible, test can be conducted outside, but within 5 seconds. 3.4.8 Heat Deflection Temperature 80 C min (ISO 75-1 and ISO 75-2, Specimen D flatwise, 0.34 +/- 0.1 mm deflection, at 1.80 MPa) 3.4.9 Heat Aging Performance (ISO 188, 150 +/- 50 air changes/h, 1000 h at 120 +/- 2 C.
18、Unaged specimens shall be annealed at 120 C for 72 hours prior to testing and property values determined at the time of the aged properties) 3.4.9.1 Tensile Strength at Yield Change +/- 25% max (Test Method per para 3.4.3) 3.4.9.2 Impact Strength, Notched Izod, Change +/- 25% max (Test Method per pa
19、ra 3.4.7.1, specimens to be notched before Heat Aging) 3.4.10 Odor Rating 3 max (FLTM BO 131-03, Specimen G) 3.4.11 Fogging Photometric (SAE J1756, Specimen F, 3 h at 100 C heating, 21 C cooling plate, post test conditioning 16 h) Fog Number 70 min Formation of clear film, droplets or crystals is ca
20、use for rejection. 3.4.12 Fogging Gravimetric 2.5 mg max (SAE J1756, Specimen F, 16 h at 100 C heating, 21 C cooling plate, post test conditioning 4 h) 3.4.13 Flammability (ISO 3795/SAE J369 Specimen B smooth surface) Burn Rate 100 mm/minute max ENGINEERING MATERIAL SPECIFICATION WSS-M4D840-B1 Copyr
21、ight 2011, Ford Global Technologies, LLC Page 4 of 7 3.5 MATERIAL PROPERTIES REPORT ONLY Values are retained in Ford Material Database . 3.5.1 Coefficient of Linear Thermal Expansion (ISO 11359-2, -30 C to 30 +/- 2 C) Flow Report E-5 mm/mm/ C Cross Flow Report E-5 mm/mm/ C 3.5.2 Mold Shrinkage (Repo
22、rt method used, sample size and value) After 48 h at 23 +/- 2 C Report Range, % 3.5.3 Poissons Ratio Report Ratio (ISO 527-1/2, Specimen A, test speed 1 mm/minute) 3.5.4 Water Absorption Report % (ISO 62, 24 h immersion, Specimen H) 3.5.5 Impact Strength, Notched Charpy (ISO 179-1/2, Specimen D) 3.5
23、.5.1 23 +/- 2 C Report Value, kJ/m2 Report Break Type 3.5.5.2 -40 +/- 2 C Report Value, kJ/m2 Report Break Type The test specimen must be conditioned for minimum of 6 h at the above specified temperature prior to impact test. Low temperature testing shall be done within the cold chamber, if not poss
24、ible, test may be conducted outside, but within 5 seconds. 3.5.6 Supplemental Information The following curves are to be submitted with the data packages: FTIR TGA DSC CLTE Engineering Stress/Strain at 23 CENGINEERING MATERIAL SPECIFICATION WSS-M4D840-B1 Copyright 2011, Ford Global Technologies, LLC
25、 Page 5 of 7 4. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 4.1 TYPICAL PROPERTIES USING TEST METHODS IN SECTION 3.5 Para. Test Typical Values Units 3.5.1 Coefficient of Linear Thermal Expansion; Flow
26、 Cross Flow 10 11 10 12 E-5 mm/mm/ C E-5 mm/mm/ C 3.5.2 Mold Shrinkage (Method used: ISO 294-3 & 294-4 / ISO 2577, 48 h at 23 +/- 2 C, 60 x 60 x 2.0 +/- 0.1 mm specimen) 2.4 3.0 % 3.5.3 Poissons Ratio 0.40 0.41 N/A 3.5.4 Water Absorption 0.2 0.3 % 3.5.5.1 Impact Strength Charpy, Notched at 23 +/- 2
27、C 3.9 9.3 kJ/m2 3.5.5.2 Impact Strength Charpy, Notched at -40 +/- 2 C 3.3 7.9 kJ/m2 4.2 MATERIAL IDENTIFICATION FOR RECYCLING PURPOSES POM (ISO 1043) ENGINEERING MATERIAL SPECIFICATION WSS-M4D840-B1 Copyright 2011, Ford Global Technologies, LLC Page 6 of 7 Table 1: Minimum Sample Size Initial Appro
28、val 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 1 1 1 per test 3.1.2 WSS-M99P2222-B1 Total Carbon, Hazardous Substances, Formaldehyde, Acraldehyde, Acetaldehyde (See
29、below for odor and fogging) 1 1 1 per test 3.3.1 Weathering Resistance 1 1 1 3.4.1 Melt Flow Rate* 3 1 3 1 1 1 3.4.2 Density 1 3 3 3.4.3 Tensile Strength at Yield* 3 5 15 1 5 5 3.4.4 Elongation at Yield* 3 5 15 1 5 5 3.4.5 Tensile Modulus 1 10 10 3.4.6 Flexural Modulus* 3 10 30 1 10 10 3.4.7 Impact
30、Strength, Notched Izod (per condition)* 3 10 30 1 10 10 3.4.8 Heat Deflection Temperature* 3 2 6 1 2 2 3.4.9 Heat Aging Performance 3.4.9.1 Tensile Strength at Yield Change 1 5 5 3.4.9.2 Impact Strength, Notched Izod Change 1 10 10 3.4.10 Odor 1 9 9 3.4.11 Fogging Photometric 1 3 3 3.4.12 Fogging Gr
31、avimetric 1 3 3 3.4.13 Flammability 1 5 5 3.5.1 Coefficient of Linear Thermal Expansion (per condition) 1 3 3 3.5.2 Mold Shrinkage 1 5 5 3.5.3 Poissons Ratio 1 5 5 3.5.4 Water Absorption 1 3 3 3.5.5 Impact Strength, Notched Charpy (per condition) 1 10 10 3.5.6 Curves - IR - TGA - DSC - CLTE Stress/S
32、train Curves 1 1 1 per test * For these requirements, the 3 Sigma value from the raw data is used to set the requirement max or min. ENGINEERING MATERIAL SPECIFICATION WSS-M4D840-B1 Copyright 2011, Ford Global Technologies, LLC Page 7 of 7 Table 2: Minimum Color Property Testing 5. SUMMARY OF REVISI
33、ONS Para. Test Method Lots Specimens per Lot Total Test Specimens Color Test Direction 3.3.1 Weathering Resistance 1 1 1 Every color 3.4.3 Tensile Strength at Yield 1 5 5 As directed by Materials Engineering 3.4.6 Flexural Modulus 1 10 10 As directed by Materials Engineering 3.4.10 Odor 1 9 9 As directed by Materials Engineering 3.4.12 Fogging Gravimetric 1 3 3 As directed by Materials Engineering 3.4.13 Flammability 1 5 5 Every Color 3.5.5.1 Impact Strength, Notched Charpy at 23 +/- 2 C 1 10 10 As directed by Materials Engineering
