1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev 00 2017 09 28 Released M.Corley, FoE Controlled document at www.MATS Copyright 2017 Ford Global Technologies, LLC Page 1 of 8 THERMOPLASTIC POLYOLEFIN ELASTOMER WSS-M4D873-B6 15% MINERAL FILLED, HIGH IMPACT, LOW CLTE, MOLDING COMPOUND FUL
2、LY PAINTED ONLY, EXTERIOR 1. SCOPE The materials defined by this specification are mineral filled high impact and low thermal expansion thermoplastic polyolefin elastomer (TPO) injection molding compounds based on polypropylene copolymers, rubber, color pigments and are for exterior painted applicat
3、ions providing that suitable surface pretreatment are used. 2. APPLICATION This specification was released originally for materials used for painted exterior trim applications. Any color additives need to be reviewed and approved by the raw material supplier and Ford Materials Engineering. The proce
4、ss/heat stabilizers must be in the base resin from the material supplier. 2.1 LIMITATIONS Materials approved to specification are unlikely to contain UV stabilizers, therefore long term exposure to direct sunlight could cause chalking and loss of gloss. 3. REQUIREMENTS 3.1 APPROVED SOURCES (CMB spec
5、ifications) This specification is part of the Ford Co-Managed Buy (CMB) agreement. Tier 1 Molders who are participating under the CMB agreement must use one the following approved sources (deviations require approval from Raw Materials Purchasing and Materials Engineering): Molders not on the CMB pr
6、ogram or regions without CMB are required to use materials as listed in in the Ford Approved Source List (), and are also encouraged to use the CMB sources. This specification requires the use of approved sources. Only the sources identified on the Ford Approved Source List (ASL) can be used when th
7、is 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 conditioned for not less than 24 h pr
8、ior 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 INFRARED SPECTROPHOTOMETRY AND/OR THERMAL ANALYSIS IR spectra and thermograms from initial material approval shall
9、 constitute the reference standard and shall be kept on file at the designated material laboratory. The material supplier shall ensure that all future material supplied to the specification shall produce IR spectra and thermograms that correspond to the reference standard when tested under the same
10、conditions. ENGINEERING MATERIAL SPECIFICATION WSS-M4D873-B6 Copyright 2017, Ford Global Technologies, LLC Page 2 of 8 3.4 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS 3.4.1 Many 4D resin specifications prior to 2011 identified certain requirements with the symbol (s), which indicated that the mea
11、n 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. 3.4.2 This specification is based on virgin material and does not allow the addition of recycled content (PIR/PCR
12、). 3.4.3 The use of regrind is permitted, for economic / environmental reasons. Part manufacturers using this specification must complete DV and PV testing with the allowable amount of regrind and the maximum allowable regrind content must be specified on the engineering drawing. Any changes to what
13、 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). 3.4.4 Materials requiring High Strain Rate, Creep or fiber oriented Tensile Modulus may be required to test to the requirement
14、s of WSS-M99D68-A1/Latest, Thermoplastic Property Determination For CAE, High Strain Rate Tensile, Creep and Tensile Modulus. Material Suppliers should be prepared to submit data upon request. 3.4.5 Performance Criteria: Parts using this specification shall meet the appropriate performance specifica
15、tion, WSS-M2P181-C/Latest for painted applications. Parts must fulfill applicable SDS/CDS requirements. 3.4.6 Ford Materials Engineering may request a Control Plan and Certificate of Analysis (C of A) containing lot testing requirements which must include, but are not limited to: Melt Flow Rate Dete
16、rmination of Ash Impact Strength, Notched Charpy at 23 C Flexural Modulus Molding Shrinkage (WSS-M4D873-B6) Post Shrinkage (WSS-M4D873-B6) 3.5 SAMPLE PREPARATION All tests shall be carried out on production materials manufactured from the production process unless correlation to a non-production pro
17、cess has been reviewed and approved by Ford Materials Engineering. 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 1873-2. No annealing is allowed. See Tabl
18、es 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 Specimen C 145 x 60 x 3.2 +/- 0.2 mm Specimen D 80 x 10 x 4.0 +/- 0.2 mm (may be cut from the center of Speci
19、men A) 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 ENGINEERING MATERIAL SPECIFICATION WSS-M4D873-B6 Copyright 2017, Ford Global Technologies, LLC Page 3 of 8 For Appe
20、arance Testing: Use an ungrained, non-polished, tool to prepare specimens for C through N gloss surfaces. Use a smooth, polished tool to prepare specimens for A and B gloss surfaces. 3.6 APPEARANCE The material must be fully painted - no additional appearance requirements apply. 3.7 MATERIAL PROPERT
21、IES 3.7.1 Determination of Ash 14-17 % (ISO 3451-1, Method A, talc filler, 3h at 650 +/- 25C) 3.7.2 Density 0.97-1.02 g/cm3 (ISO 1183, Method A) 3.7.3 Tensile Strength at Yield 16 MPa min (ISO 527-1 and ISO 527-2, Specimen A, 50 mm/minute test speed) 3.7.4 Tensile Modulus 1.3 GPa min (ISO 527-1 and
22、ISO 527-2, Specimen A, 1 mm/minute test speed) 3.7.5 Flexural Modulus 1.4 GPa min (ISO 178, Specimen D, 64 mm support span, 2 mm/minute test speed) 3.7.6 Impact Strength, Notched Charpy (ISO 179-1/1eA, Specimen D) 3.7.6.1 At 23 +/- 2 C 45 kJ/m2 min Report Break Type 3.7.6.2 At -40 +/- 2 C 3 kJ/m2 mi
23、n Report Break Type 3.7.6.3 At 0 +/- 2 C 30 kJ/m2 min Report Break Type The test specimen must be conditioned for minimum of 6 hours at the above specified temperature prior to impact test. Low temperature testing shall be done within the cold chamber, if not possible, test may be conducted outside,
24、 but within 5 seconds. Test specimens must be reviewed by Materials Engineering. 3.7.7 Heat Deflection Temperature 48 C min (ISO 75-1 and ISO 75-2, Specimen D, flatwise, Bath silicone oil, 0.34 +/- 0.1 mm deflection. At 1.80 MPa) 3.7.8 Coefficient of Linear Thermal Expansion (ISO 11359-2, -30 +/- 2
25、C to Tg, Tg to 100 +/- 2 C, 3 curves per directions, flow and cross flow) Plaque size is 100 x 150 minimum at 3.2 +/- 0.2 mm thickness. Plaque to be fan or ENGINEERING MATERIAL SPECIFICATION WSS-M4D873-B6 Copyright 2017, Ford Global Technologies, LLC Page 4 of 8 edge gated. Specimens to be water jet
26、 or die cut from the center of plaque, minimum of three samples each direction. Conditioning procedure consists of steps 1-4. Start at 23 C. 1. Ramp 5 C/minute to -40 C 2. Isothermal hold for 5 minutes 3. Ramp 5 C/minute to 110 C 4. Isothermal hold for 10 minutes Leave the test specimen in the equip
27、ment and run steps 5-7 5. Ramp 5 C/minute to -40 C 6. Isothermal hold for 10 minutes 7. Ramp 5 C/minute to 110 C Report CLTE value after Step 4 (un-annealed value) for both Flow and Cross Flow directions. Flow Report Value, E-5 mm/mm/ C Cross Flow Report Value, E-5 mm/mm/ C Report CLTE value again a
28、fter Step 7 (annealed value) for both Flow and Cross Flow directions. Flow 4 - 7 E-5 mm/mm/ C Cross Flow 5 - 8 E-5 mm/mm/ C 3.7.9 Heat Aging Performance (ISO 188, 150 +/- 50 air changes/h, 1000 h at 120+/- 2 C. After heat aging test specimens are To be conditioned in a desiccator for 3 - 5 h at 23 +
29、/- 2 C. Unaged property values shall be determined at the time of the aged properties determination) 3.7.9.1 Tensile Strength at Yield Change +/- 25% max (Test Method per para 3.7.3) 3.7.9.2 Impact Strength, Notched Charpy, Change +/- 25% max (Test Method per para 3.7.6.1, specimens to be notched be
30、fore Heat Aging) 3.7.10 Flammability (ISO 3795/SAE J369, Specimen B, smooth surface) Burn Rate 100 mm/minute max 3.8 MATERIAL PROPERTIES REPORT ONLY Values are retained in Ford Materials Database . 3.8.1 Melt Flow Rate Report Value, % (ISO 1133 230 C, 2.16 kg) ENGINEERING MATERIAL SPECIFICATION WSS-
31、M4D873-B6 Copyright 2017, Ford Global Technologies, LLC Page 5 of 8 3.8.2 Molding Shrinkage (Report method used, sample size and value) After 48 h at 23 +/- 2 C Flow Report Value, % Cross Flow Report Value, % 3.8.3 Post Shrinkage (Report method used, sample size and value Separate specimens required
32、 for each test, report total shrinkage) After 48 h at 80 +/- 2 C Flow Report Value, % Cross Flow Report Value, % After 30 minutes at 120 +/- 2 C Flow Report Value, % Cross Flow Report Value, % 3.8.4 Hardness, Durometer D Report Value (ISO 868, 15 s dwell) 3.8.5 Elongation at Yield Report Value, % (I
33、SO 527-1 and ISO 527-2, Specimen A, 50 mm/minute test speed See Notes) 3.8.6 Standard Test Method for High Speed Puncture Properties of Plastic Using Load and Displacement Sensors (ASTM D 3763, Impact velocity: 2.2 m/s Specimen E, smooth surface) Max Load Energy at 23 +/- 2 C Report J Energy Absorbe
34、d 100% Ductile Failure Max Load Energy at -15 +/- 2 C Report J Energy Absorbed 100% Ductile Failure Max Load Energy at -20 +/- 2 C Report J Energy Absorbed 80% Ductile Failure, min Test specimens must be conditioned for minimum of 6 h at test temperature prior to impact testing. Low temperature test
35、ing shall be conducted within the same environmental chamber as the clamp mechanism of the impact device. Specimens can be transported from the conditioning environment to the testing environment, provided the transfer is within 5 seconds. Ductile is defined as a failure in which plastic deformation
36、 precedes fracture sample does not fracture into two or more pieces sample does not show cracks radiating more than 10 mm beyond the center of the impact point In borderline cases Ford Materials Engineering can use additional data such as load versus deflection curves or maximum load data to establi
37、sh ductility. Summarize testing at each condition by providing the following information: ENGINEERING MATERIAL SPECIFICATION WSS-M4D873-B6 Copyright 2017, Ford Global Technologies, LLC Page 6 of 8 a. Detailed description of specimen preparation if different then Specimen E. b. Molding conditions: me
38、lt and mold surface temperatures, and average injection velocity. c. All force versus deflection curves for each impact event. d. Original samples are to be submitted for review or, in agreement with Ford Materials Engineering, photos of the tested samples. 3.8.7 Poissons Ratio Report Ratio (ISO 527
39、-1 and ISO 527-2, Specimen A, 1 mm/minute test speed) 3.8.8 Supplemental Information The following curves are to be submitted with the data packages: FTIR TGA DSC first and second heat Engineering Stress/Strain at 23 C, -40 C and 80 C CLTE 4. GENERAL INFORMATION The information given below is provid
40、ed for clarification and assistance in meeting the requirements of this specification. Contact for questions concerning Engineering Material Specifications. 4.1 TYPICAL PROPERTIES USING METHODS IN SECTION 3.8 Para. Test Typical Value Units 3.8.1 Melt Flow Rate 20 - 25 % 3.8.2 Molding Shrinkage (Rep
41、ort method used, sample size and value) - After 48 h at 23 +/- 2 C Flow Cross Flow 0.4 - 0.6 0.5 - 0.7 % % 3.8.3 Post Shrinkage (For specific method and sample size, contact Materials Engineering. Values show total shrinkage) - After 48 h at 80 +/- 2 C Flow Cross Flow - After 30 minutes at 120 C Flo
42、w Cross Flow 0.5 - 0.7 0.6 - 0.8 0.6 - 0.8 0.6 - 0.9 % % % % 3.8.4 Hardness, Durometer D 55 - 60 3.8.5 Elongation at Yield 6.4 % 3.8.7 Poissons Ratio 0.4 N/A ENGINEERING MATERIAL SPECIFICATION WSS-M4D873-B6 Copyright 2017, Ford Global Technologies, LLC Page 7 of 8 4.2 GENERIC IDENTIFICATION AND MARK
43、ING OF PLASTIC PRODUCTS TPO-(PP+EPM)-MD15 (ISO 1043/11469/18064) Table 1: Minimum Sample Size Initial Approval and/or Initial Approval in a New Region Additional Manufacturing Location for Previously Approved Material Para. Test Minimum Lots Specimens per Lot Total Test Specimens Lots Specimens per
44、lot Total Test Specimens 3.7.1 Determination of Ash * 3 1 3 1 1 1 3.7.2 Density 1 3 3 1 3 3 3.7.3 Tensile Strength at Yield* 3 5 15 1 5 5 3.7.4 Tensile Modulus 1 10 10 3.7.5 Flexural Modulus* 3 10 30 1 10 10 3.7.6 Impact Strength Notched Charpy (per condition)* 3 10 30 1 10 10 3.7.7 Heat Deflection
45、Temperature (per condition)* 3 2 6 1 2 2 3.7.8 Coefficient of Linear Thermal Expansion (per condition) 1 3 3 3.7.9 Heat Aging Performance 3.7.9.1 Tensile Strength at Yield, Change 1 5 5 3.7.9.2 Impact Strength, Notched Charpy, Change 1 10 10 3.7.10 Flammability 1 5 5 3.8.1 Melt Flow Rate 3 1 3 3 1 3
46、 3.8.2 Mold Shrinkage 1 5 5 1 5 5 3.8.3 Post Shrinkage 1 5 5 1 5 5 3.8.4 Hardness, Durometer D 1 5 measurements 1 3.8.5 Elongation at Yield 1 5 5 3.8.6 Impact Strength, Multiaxial (per condition)* 3 10 30 1 10 10 3.8.7 Poissons Ratio 1 2 2 1 2 2 3.8.8 Curves - IR - TGA - DSC (first and second heat)
47、- CLTE (3 flow and 3 cross flow) - Stress/Strain Curves 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-M4D873-B6 Copyright 2017, Ford Global Technologies, LLC Page 8 of 8 Table 2: Minimum Color Prop
48、erty Testing - Contact Materials Engineering for Color Test Work Plan 4.3 APPROVAL OF MATERIALS Suppliers desiring 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
49、 copy of their laboratory test reports, signed by a qualified and authorized representativeof the test facility, 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 doc
