1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev 3 2017 02 17 Editorial See Summary of Revisions J. Crist, NA 2013 03 14 Revised Editorial, See Summary of Revisions V. Cerato, EU 2011 10 26 Activated V.Cerato, FoE Controlled document at www.MATS Copyright 2017, Ford Global Technologies,
2、 LLC Page 1 of 9 THERMOPLASTIC POLYOLEFIN ELASTOMER (TPO) 15% MINERAL FILLED, MOLDING COMPOUND, MOLD-IN-COLOR, EXTERIOR WSS-M4D873-B1 THERMOPLASTIC POLYOLEFIN ELASTOMER (TPO) 15% MINERAL FILLED, MOLDING COMPOUND, PAINTABLE EXTERIOR WSS-M4D873-B2 1. SCOPE The material defined by this specification is
3、 a 15% mineral filled thermoplastic injection molding compound based on thermoplastic polyolefin elastomer (TPO). For mold-in-color with added UV stabilization for exterior, use WSS-M4D873-B1, or use WSS-M4D873-B2 for painting, provided that suitable surface pretreatment is used. 2. APPLICATION WSS-
4、M4D873-B1 This specification was released originally for material used for exterior parts, mold- in-color, which are exposed to sunlight such as bumper shells and body side moldings. Any color additives need to be reviewed and approved by the raw material supplier and Ford Materials Engineering. The
5、 UV/process/heat stabilizers must be in the base resin from the material supplier, not in the color concentrate, specifically for mold-in-color applications at the press. WSS-M4D873-B2 This specification was released originally for material used for painted exterior applications, such as bumper shel
6、ls and body side moldings. This specification was developed to be used in conjunction with WSS-M4D873-B1 to match shrinkages when moulding both painted and unpainted components in one tool. Any color additives need to be reviewed and approved by the raw material supplier and Ford Materials Engineeri
7、ng. The process/heat stabilizers must be in the base resin from the material supplier. 2.1 LIMITATIONS WSS-M4D873-B1 - This material should not be used for painted applications since it contains performance additives that negatively affect paint adhesion. - This material should not be used for fasci
8、as in FNA. WSS-M4D873-B2 - This material is unlikely to contain UV stabilizers, therefore long term exposure to direct sunlight could cause chalking and loss of gloss. - This material should not be used for fascias in FNA. ENGINEERING MATERIAL SPECIFICATION WSS-M4D873-B1/B2 Copyright 2017, Ford Glob
9、al Technologies, LLC Page 2 of 9 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 specifications prior to 2011, identified certain
10、 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 establish specification l
11、imits. 3.1.2 These specifications are 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 materials and PV
12、testing required by Ford Materials Engineering. 3.1.3 The use of regrind is permitted, for economic / environmental reasons, with compliance as indicated in Ford Engineering CAD and Drafting Standard E-4. 3.1.4 Performance Criteria: WSS-M4D873-B1- Parts using this specification shall meet the approp
13、riate performance specifications WSS-M98P13-C / Latest. WSS-M4D873-B2- Parts using this specification shall meet the appropriate performance specifications WSS-M2P181-C / Latest. Parts must fulfill applicable SDS/CDS requirements. 3.1.5 As specified in WSS-M99P1111-A, paragraph 3.2, Ford Materials E
14、ngineering may request a Control Plan and Certificate of Analysis (CoA) containing lot testing requirements which must include, but are not limited to: Melt Flow Rate Filler Content Impact Strength, Notched Charpy at 23C Flexural Modulus Mould shrinkage Post shrinkage 3.2 SAMPLE PREPARATION Unless o
15、therwise 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 Tables 1 and 2 for the number of samples required. ENGINEERING MATERIAL SPECIFI
16、CATION WSS-M4D873-B1/B2 Copyright 2017, Ford Global Technologies, LLC Page 3 of 9 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 Speci
17、men 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 (WSS-M4D873-B1 ONLY) 3.3.1 Weathering Resistance Rating 4 min (SAE J2527 At
18、las Water Cooled, Rotary Drum Xenon-Arc Apparatus only. Modified Type “S“ borosilicate inner and outer filters, 0.55 W/m2 radiant exposure monitored at 340 nm, 3000 h total exposure or as otherwise defined, Specimen C, from smooth polished mold, ISO 105-A02 / AATCC Evaluation Procedure 1) For color
19、durability submissions, test all program colors. 3.3.2 1 and 2 year Florida Rating 4 min Initial Qualification for new resin technology (SAE J1976, 5 south, direct weathering inland, Specimen C from smooth polished mold, ISO 105-A02 / AATCC Evaluation Procedure 1) After exposure the material shall s
20、how no color change in excess of the specified AATCC Rating. In addition, there shall be no cracking, crazing or other deterioration. A slight loss of gloss or chalking will be allowed provided an acceptable appearance can be achieved as specified below by washing with mild detergents and water (rat
21、io 5:95 by volume) or equivalent after the outdoor exposure only. All initial approvals may be based on the accelerated weathering exposure, pending real world outdoor exposure results for final approval. 3.3.3 Resistance to Scratch and Mar (FLTM BO 162-01, Specimen I) Scratch Rating 2 at 2 N, max W
22、hitening/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 Materials Engineering. Details regarding color house, let down ratio, colors, grain, etc can be found in the approval package. ENGINEERING MATERIAL SPEC
23、IFICATION WSS-M4D873-B1/B2 Copyright 2017, Ford Global Technologies, LLC Page 4 of 9 3.4 MATERIAL PROPERTIES 3.4.1 Filler Content 12-18 % (ISO 3451-1, Method A, 1h at 850 +/- 50 C, test portion 2 to 2.5 g) 3.4.2 Density 1.01-1.04 g/cm3 (ISO 1183, Method A) 3.4.3 Tensile Strength at Yield 16 MPa min
24、ISO 527-1 and ISO 527-2, Specimen A, 50 mm/minute test speed) 3.4.4 Tensile Modulus 1.20 GPa min (ISO 527-1 and ISO 527-2, Specimen A, 1 mm/minute test speed) 3.4.5 Flexural Modulus 1.24 GPa min (ISO 178, Specimen D, 64 mm support span, 2 mm/minute test speed) 3.4.6 Impact Strength, Notched Charpy
25、ISO 179-1/1eA, Specimen D) 3.4.6.1 At 23 +/- 2 C 40 kJ/m2 min Report Break Type 3.4.6.2 At -40 +/- 2 C 2 kJ/m2 min Report Break Type 3.4.6.3 At 0 +/- 2 C 10 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 te
26、st. Low temperature testing shall be done within the cold chamber, if not possible, test may be conducted outside, but within 5 seconds. 3.4.7 Heat Deflection Temperature 43 C min (ISO 75-1 and ISO 75-2, Specimen D, flatwise, 0.34 +/- 0.1 mm deflection. At 1.80 MPa) 3.4.8 Heat Aging Performance (ISO
27、 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 +/- 2 C. Unaged property values shall be determined at the time of the aged properties determination) 3.4.8.1 Tensile Strength at Yield, Change +/- 25% max (
28、Test Method per para 3.4.3) ENGINEERING MATERIAL SPECIFICATION WSS-M4D873-B1/B2 Copyright 2017, Ford Global Technologies, LLC Page 5 of 9 3.4.8.2 Impact Strength, Notched Charpy, Change +/- 25% max (Test Method per para 3.4.6.1, specimens to be notched before Heat Aging) 3.4.9 Flammability (ISO 3795
29、/SAE J369, Specimen B, smooth surface) Burn Rate 100 mm/minute max 3.5 MATERIAL PROPERTIES REPORT ONLY Values are retained in Ford Materials Database . 3.5.1 Melt Flow Rate Report Value, g/10 minutes (ISO 1133, 230 C, 2,16 kg) 3.5.2 Molding Shrinkage (Report method used, sample size and value) After
30、 48 h at 23 +/- 2 C Flow Report Value, % Cross Flow Report Value, % 3.5.3 Post Shrinkage (WSS-M4D873-B2 ONLY) (Report method used, sample size and value Separate specimens required for each test, report total shrinkage) After 48 h at 80 C Flow Report Value, % Cross Flow Report Value, % After 30 minu
31、tes at 120 C Flow Report Value, % Cross Flow Report Value, % 3.5.4 Coefficient of Linear Thermal Expansion (ISO 11359-2, -30 +/- 2 C to 100 +/- 2 C) Flow Report Value, E-5 mm/mm/ C Cross Flow Report Value, E-5 mm/mm/ C 3.5.5 Impact Strength, Notched Izod (ISO 180/1A, Specimen D) 3.5.5.1 At 23 +/- 2
32、C Report Value, kJ/m2 Report Break Type 3.5.5.2 At -40 +/- 2 C Report Value, kJ/m2 Report Break Type ENGINEERING MATERIAL SPECIFICATION WSS-M4D873-B1/B2 Copyright 2017, Ford Global Technologies, LLC Page 6 of 9 3.5.5.3 At 0 +/- 2 C Report Value, kJ/m2 Report Break Type The test specimen must be cond
33、itioned 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, but within 5 seconds 3.5.6 Impact Strength Multiaxial (ASTM D 3763, Impact velocity: 2.2 m/s Specimen
34、 E, smooth surface injection molded specimen) Max Load Energy at 23 +/- 2 C Report J Energy Absorbed Report % Ductile Failure Max Load Energy at -15 +/- 2 C Report J Energy Absorbed Report % Ductile Failure Max Load Energy at -20 +/- 2 C Report J Energy Absorbed Report % Ductile Failure Report test
35、data for 23 +/- 2 C, and continue until a minimum of 80% ductile are observed. A ductile failure is defined as a crack that does not radiate more than 10 mm from the center of the impact point. Test specimens must be conditioned for minimum of 6 h at test temperature prior to impact testing. Low tem
36、perature testing 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. 3.5.7 Poissons Ratio Report Ratio (ISO 527-1 an
37、d ISO 527-2, Specimen A, 1 mm/minute test speed) 3.5.8 Supplemental Information The following curves are to be submitted with the data packages: FTIR TGA DSC CLTE Engineering Stress/Strain at 23 C 4. GENERAL INFORMATION The information given below is provided for clarification and assistance in meet
38、ing the requirements of this specification. Contact for questions concerning Engineering Material Specifications. ENGINEERING MATERIAL SPECIFICATION WSS-M4D873-B1/B2 Copyright 2017, Ford Global Technologies, LLC Page 7 of 9 4.1 TYPICAL PROPERTIES USING METHODS IN SECTION 3.5 Para. Test Typical Valu
39、e Units 3.5.1 Melt Flow Rate 12 g/10 min 3.5.2 Molding Shrinkage After 48 h at 23 +/- 2 C (For specific method and sample size, contact Materials Engineering) Flow Cross Flow 0.65 1.05 % % 3.5.3 Post Shrinkage (WSS-M4D873-B2 ONLY) (For specific method and sample size, contact Materials Engineering.
40、Values show total shrinkage) - After 48 h at 80 +/- 2 C Flow Cross Flow - After 30 minutes at 120 C Flow Cross Flow 0.68 0.94 0.77 0.99 % % % % 3.5.4 Coefficient of Linear Thermal Expansion Flow Cross Flow 7.7 9.0 E-5 mm/mm/ C E-5 mm/mm/ C 3.5.5 Impact Strength, Izod Notched At 23C At -40C At 0C 40
41、4 17 kJ/m2 kJ/m2 kJ/m2 3.5.6 Impact Strength Multiaxial At -20C At -30C 100 20.6 80 22 % J % J 3.5.7 Poissons Ratio 0.34 N/A 4.2 MATERIAL IDENTIFICATION FOR RECYCLING PURPOSES PP+EPDM-M15 (ISO 1043/11469/18064) ENGINEERING MATERIAL SPECIFICATION WSS-M4D873-B1/B2 Copyright 2017, Ford Global Technolog
42、ies, LLC Page 8 of 9 Table 1: Minimum Sample Size Initial Approval New Manufacturing Location for Previously Approved Material Para. Test Minimum Lots Specimens per Lot Total Test Specimens Lots Specimens per lot Total Test Specimens 3.1 WSS-M99P1111-A 3.1.4 Performance Criteria: WSS-M98P13-C or WSS
43、M2P181-C Reference Performance Specification 3.3.1 Weathering Resistance 1 1 1 3.3.2 1 and 2 year Florida 1 1 1 3.3.3 Scratch resistance 1 3 3 3.4.1 Filler Content* 3 1 3 1 1 1 3.4.2 Density 1 3 3 1 3 3 3.4.3 Tensile Strength at Yield * 3 5 15 1 5 5 3.4.4 Tensile Modulus 1 10 10 3.4.5 Flexural Modu
44、lus* 3 10 30 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 Aging Performance 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 Flammability 1 5 5 3.5.
45、1 Melt Flow Rate 3 1 3 1 1 1 3.5.2 Mold Shrinkage 1 5 5 1 5 5 3.5.3 Post Shrinkage (painted applications only) 1 5 5 1 5 5 3.5.4 Coefficient of Linear Thermal Expansion (per condition) 1 3 3 3.5.5 Impact Strength, Notched Izod (per condition) 1 10 10 3.5.6 Impact Strength, Multiaxial (per condition)
46、 3 10 30 1 10 10 3.5.7 Poissons Ratio 1 2 2 1 2 2 3.5.8 Curves - IR - TGA - DSC - CLTE - 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-B1/B2 Copyright 2017, Ford Global
47、 Technologies, LLC Page 9 of 9 Table 2: Minimum Color Property Testing - Contact Materials Engineering for Color Test Work Plan (WSS-M4D873-B1 ONLY) 5. SUMMARY OF REVISIONS 2-17-2017 Editorial Removed reference to grained surfaces for the B2 suffix. 3-14-2013 Editorial section 3.3.3 corrected typo o
48、n section 3.3.3 whitening load from 2N to 7N Corrected typo on section 3.3.3 marring from 7N to 2N 9-12-2012 Addition of WSS-M4D873-B2 Review of WSS-M4D873-B1 to latest template- Editorial Added para: 3.5.3 3.5.6 Para. Test Lots Specimens per Lot Total Test Specimens Color Test Direction 3.3.1 Weath
49、ering Resistance 1 1 1 Every color 3.3.3 Scratch Resistance 1 3 3 As directed by Materials Engineering 3.4.3 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
