1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions REV. 01 2015 09 16 Revised See Summary of Revision B. Haggart, FNA 2011 09 02 Activated B. Haggart, FNA Controlled document at www.MATS Copyright 2015, Ford Global Technologies, LLC Page 1 of 7 ACETAL (POM) COPOLYMER, MOLDED-IN-COLOR, WSS-M4D
2、840-B1 INTERIOR, UV STABLE 1. SCOPE The material defined by this specification is a molded-in-color thermoplastic acetal copolymer for interior use. 2. APPLICATION This specification was released originally for materials used for decorative and/or functional interior automotive applications such as
3、loudspeaker grilles, bin latches, and moving parts such as links and sliders. 2.1 LIMITATIONS These materials are not intended for painted applications. 3. REQUIREMENTS 3.1 APPROVED SOURCES This specification requires the use of approved sources. Only the sources identified on the Ford Approved Sour
4、ce List (ASL) can be used when this specification is listed on the drawing, CAD file, or other documents. The list of approved sources is located within Ford at or available externally through a Ford Materials Engineer. 3.2 CONDITIONING AND TEST CONDITIONS All test values are based on material cond
5、itioned for not less than 24 h prior to testing in a controlled environment of 23 +/- 2 C and 50 +/- 5% relative humidity. Testing of the material should occur in the conditioning environment or soon after removal. 3.3 REQUIREMENTS FOR PRODUCTION MATERIALS 3.3.1 This specification is based on virgin
6、 material and does not allow the addition of recycled content (PIR/PCR). 3.3.2 The use of regrind is permitted, for economic / environmental reasons. Part manufacturers using this specification must complete DV and PV testing with allowable amount of regrind and the maximum allowable regrind content
7、 must be specified on the engineering drawing. Any changes to what is specified on the drawing (no specific amount implies zero regrind) must be approved by Materials and PD Engineering through the formal Ford Motor Company process (SREA). ENGINEERING MATERIAL SPECIFICATION WSS-M4D840-B1 Copyright 2
8、015, Ford Global Technologies, LLC Page 2 of 7 3.3.3 Materials approved to these specifications do not require testing to WSS-M99P2222-D1/latest Performance, Vehicle Interior Environment Quality Material/Component Requirements. If collective parts exceed 100 cm2 or 100 g then testing will be require
9、d per the appropriate performance specification. 3.3.4 Materials requiring High Strain Rate, Creep or fiber oriented Tensile Modulus must test to the requirements of WSS-M99D68-A1/Latest, Thermoplastic Property Determination. For CAE, High Strain Rate Tensile, Creep and Tensile Modulus. Data must be
10、 included in the material submission package. 3.3.5 Performance Criteria: Parts using this specification shall meet the appropriate performance specification, WSS-M15P4-F/Latest for Hard, Interior, Molded-in-Color component performance. 3.4 SAMPLE PREPARATION Unless otherwise specified all tests sha
11、ll 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 9988-2. Annealing is allowed for unaged specimens for property comparison to Heat Aging samples only. See Table 1 for the number of specimens requir
12、ed. 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 Specimen A. 80 x 10 x 4.0 +/- 0.2 mm Specimen E 100 mm diameter x 3.2 mm Specimen F
13、 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 3.5 APPEARANCE 3.5.1 Weathering Resistance Rating 4 min (FLTM BO 116-01, 2406.4 kJ/m2 exposure Specimen C from smooth polished mold, ISO 105-A02 / AATCC Evaluation Proc
14、edure 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 and report any spewing or other exudation. After exposure the material shall show no fading or color change in excess of s
15、pecified 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. 3.6 MATERIAL PROPERTIES 3.6.1 Density 1.39 1.43 g/cm3 (ISO 1183, Met
16、hod A) 3.6.2 Tensile Strength at Yield 57 MPa min (ISO 527-1 and ISO 527-2, Specimen A 50 mm/minute test speed) ENGINEERING MATERIAL SPECIFICATION WSS-M4D840-B1 Copyright 2015, Ford Global Technologies, LLC Page 3 of 7 3.6.3 Elongation at Yield 6.9 % min (ISO 527-1 and ISO 527-2, Specimen A, 50 mm/m
17、inute test speed) 3.6.4 Tensile Modulus 2.6 GPa min (ISO 527-1 and ISO 527-2, Specimen A, 1 mm/minute test speed) 3.6.5 Flexural Modulus 2.1 GPa min (ISO 178, Specimen D, 64 mm support span, 2 mm/minute test speed) 3.6.6 Impact Strength, Notched Charpy (ISO 179-1/1eA, Specimen D) 3.6.6.1 At 23 +/- 2
18、 C 3.7 kJ/m2 min Report Break Type 3.6.6.2 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 the cold box, if not possible, test can be conducted o
19、utside, but within 5 seconds. 3.6.7 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) 3.6.8 Heat Aging Performance (ISO 188, 150 +/- 50 air changes/h, 1000 h at 120 +/- 2 C. Unaged specimens shall be annealed at 120 C for 72 ho
20、urs prior to testing and property values determined at the time of the aged properties) 3.6.8.1 Tensile Strength at Yield Change +/- 25% max (Test Method per para 3.6.3) 3.6.8.2 Impact Strength, Notched Charpy, Change +/- 25% max (Test Method per para 3.6.6.1, specimens to be notched before Heat Agi
21、ng) 3.6.9 Odor (FLTM BO 131-03, Specimen G, Variant B) Condition 1 Rating 3 max Condition 2 Rating 3 max Condition 3 Rating 3 max ENGINEERING MATERIAL SPECIFICATION WSS-M4D840-B1 Copyright 2015, Ford Global Technologies, LLC Page 4 of 7 3.6.10 Fogging Photometric (SAE J1756, Specimen F, 3 h at 100 C
22、 heating, 21 C cooling plate, post test conditioning 16 h) Fog Number 70 min Formation of clear film, droplets or crystals is cause for rejection. 3.6.11 Flammability (ISO 3795/SAE J369 Specimen B smooth surface) Burn Rate 100 mm/minute max 3.7 MATERIAL PROPERTIES REPORT ONLY Values are retained in
23、Ford Material Database . 3.7.1 Melt Flow Rate Report g/10 minutes (ISO 1133, 190 C, 2.16 kg) 3.7.2 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 3.7.3 Mold Shrinkage (Report method used, sample size and value) After
24、 48 h at 23 +/- 2 C Report Range, % 3.7.4 Poissons Ratio Report Ratio (ISO 527-1/2, Specimen A, test speed 1 mm/minute) 3.7.5 Water Absorption Report % (ISO 62, 24 h immersion, Specimen H) 3.7.6 Supplemental Information The following curves are to be submitted with the data packages: FTIR TGA DSC CL
25、TE Engineering Stress/Strain at 23 C 4. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. Contact for questions concerning Engineering Material Specifications. ENGINEERING MATERIAL SPECIFICATION WSS-M4D840
26、-B1 Copyright 2015, Ford Global Technologies, LLC Page 5 of 7 4.1 TYPICAL PROPERTIES USING TEST METHODS IN SECTION 3.5 Para. Test Typical Values Units 3.7.1 Melt Flow Rate 7 - 11 g/10 minutes 3.7.2 Coefficient of Linear Thermal Expansion; Flow Cross Flow 10 11 10 12 E-5 mm/mm/ C E-5 mm/mm/ C 3.7.3 M
27、old 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 % 3.7.4 Poissons Ratio 0.40 0.41 N/A 3.7.5 Water Absorption 0.2 0.3 % 4.2 MATERIAL IDENTIFICATION FOR RECYCLING PURPOSES POM (ISO 1043) 4.3 APPROVAL OF MATERIALS Suppliers desirin
28、g approval of their materials shall first obtain an expression of interest from Purchasing, Design or Product Development, and Materials Engineering. The supplier shall submit a completed copy of their laboratory test reports, signed by a qualified and authorized representative of the test facility,
29、 demonstrating full compliance with all the requirements of the Material Specification. Tested material samples must be available for review upon request and kept for a minimum of one year. Upon request, the supplier will review the associated quality control documents (Process Failure Mode and Effe
30、cts Analysis, Control Plans, Certification testing) with Ford. 4.4 SUPPLIERS ONGOING RESPONSIBILITY All materials must be equivalent in all characteristics to the material upon which approval was originally granted. Prior to making any changes to the material originally approved, whether or not such
31、 changesaffect the materials ability to meet the specification requirements, the supplier shall notify theaffected Supplier Technical Assistance (STA), Purchasing, and Materials Engineering activitiesof the proposed changes (with reasons) by submission of a completed Suppliers Request forEngineering
32、 Approval, SREA. For parts and components using Ford Engineering Material Specifications, all samples tested to the specifications for Design Verification (DV), Production Verification (PV) and Production Part Approval Process (PPAP) sign off must be kept until Job 1. 4.5 RESTRICTED SUBSTANCE MANAGE
33、MENT STANDARD Substance restrictions imposed by regulations or Company direction applies to the materials addressed by this document. The restrictions are identified in the Restricted Substance Management Standard WSS-M99P9999-A1 which is updated yearly. It is the suppliers responsibility to comply
34、with this standard on a continuing basis through IMDS and or GMAP reporting. ENGINEERING MATERIAL SPECIFICATION WSS-M4D840-B1 Copyright 2015, Ford Global Technologies, LLC Page 6 of 7 5. SUMMARY OF REVISIONS 2015-09-16 Revised Title, Updated format and standard paragraphs. Renumbered. Deleted WSS-M9
35、9P1111-A and moved requirements into this spec. Removed gravimetric fogging and VIEQ requirement Moved Melt Flow Rate to 3.7 Report Only. Table 1: Minimum Sample Size Initial Approval New Manufacturing Location for Previously Approved Material Para. Test Lots Specimens per lot Total Test Specimens L
36、ots Specimens per lot Total Test Specimens 3.3.4 WSS-M99D68-A1 See Specification 3.3.5 WSS-M15P4-F See Performance Specification 3.5.1 Weathering Resistance 1 1 1 3.6.1 Density 1 3 3 3.6.2 Tensile Strength at Yield* 3 5 15 1 5 5 3.6.3 Elongation at Yield* 3 5 15 1 5 5 3.6.4 Tensile Modulus 1 10 10 3
37、.6.5 Flexural Modulus* 3 10 30 1 10 10 3.6.6 Impact Strength, Notched Charpy (per condition)* 3 10 30 1 10 10 3.6.7 Heat Deflection Temperature* 3 2 6 1 2 2 3.6.8 Heat Aging Performance 3.6.8.1 Tensile Strength at Yield Change 1 5 5 3.6.8.2 Impact Strength, Notched Charpy Change 1 10 10 3.6.9 Odor 1
38、 9 9 3.6.10 Fogging Photometric 1 3 3 3.6.11 Flammability 1 5 5 3.7.1 Melt Flow Rate 1 1 1 3.7.2 Coefficient of Linear Thermal Expansion (per condition) 1 3 3 3.7.3 Mold Shrinkage 1 5 5 3.7.4 Poissons Ratio 1 5 5 3.7.5 Water Absorption 1 3 3 3.7.6 Curves - IR - TGA - DSC - CLTE Stress/Strain Curves
39、1 1 1 per test * For these requirements, the 3 Sigma value from the raw data is used to meet the requirements. ENGINEERING MATERIAL SPECIFICATION WSS-M4D840-B1 Copyright 2015, Ford Global Technologies, LLC Page 7 of 7 Table 2: Minimum Color Property Testing Para. Test Method Lots Specimens per Lot T
40、otal Test Specimens Color Test Direction 3.5.1 Weathering Resistance 1 1 1 Every color 3.6.2 Tensile Strength at Yield 1 5 5 As directed by Materials Engineering 3.6.5 Flexural Modulus 1 10 10 As directed by Materials Engineering 3.6.6.1 Impact Strength, Notched Charpy at 23 +/- 2 C 1 10 10 As directed by Materials Engineering 3.6.9 Odor 1 9 9 As directed by Materials Engineering 3.6.10 Fogging Photometric 1 3 3 As directed by Materials Engineering 3.6.11 Flammability 1 5 5 Every Color
