1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev 00 2014 08 29 Released R.J.Harris, NA Controlled document at www.MATS Copyright 2014, Ford Global Technologies, LLC Page 1 of 6 POLYAMIDE (PA) 66, IMPACT MODIFIED, HEAT STABILIZED WSS-M4D666-B1 MOLDING COMPOUND 1. SCOPE The material defin
2、ed by this specification is an elastomer (EPDM) modified molding compound based on polyamide 66 for underhood applications. These are typically non UV stable materials. 2. APPLICATION This material is being released for general purpose applications. 2.1 LIMITATIONS This material absorbs and retains
3、moisture. Part design and tolerances must accommodate changes in part dimensions and physical properties due to moisture absorption or loss in the service/assembly environment. This material typically does not contain UV stabilizers, long term exposure to direct sunlight will cause chalking and loss
4、 of gloss without suitable additives. This material is not suitable for long term exposure to engine coolant, or direct exposure to strong acids or bases. It is not suitable for use above 145 C. 3. REQUIREMENTS 3.1 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers
5、must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.1.1 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 minim
6、um, maximum or range was established using 3 sigma values. For 2011 and beyond, refer to Table 1 for number of samples required for each test. 3.1.2 This specification is based on virgin materials; however materials with recycled content as defined by WRS-M99P42-A1 (post-consumer and/or post industr
7、ial recyclates and repolymerised recycled materials) should be used whenever technically feasible. 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. Part manufacturers using this specification
8、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 is specified on the drawing (no specification implies zero regrind) must be approved by Materials and PD Engineering throug
9、h the formal Ford Motor process (SREA). ENGINEERING MATERIAL SPECIFICATION WSS-M4D666-B1 Copyright 2014, Ford Global Technologies, LLC Page 2 of 6 3.1.4 Dry as molded: All test values indicated herein are based on material and specimens with moisture content not exceeding 0.2% except where noted (Mo
10、isture Conditioned) (test according to ISO 15512 Method B/ASTM D 6869). All test materials have to be sealed in moisture-proof containers and stored at 23 +/- 2 C for at least 24 h immediately after processing. If the moisture content exceeds 0.2%, conditioning the material for a minimum of 16 h at
11、40 50 C at a reduced pressure below 133 kPa. Conduct tests in a controlled atmosphere of 23 +/- 2 C and 50 +/- 5% relative humidity. Individual specimens shall not be removed from closed containers until immediately before testing. 3.1.5 Moisture Conditioned: The specimens shall be conditioned to a
12、moisture content of 1.0 to 2.0 wt% moisture then place the specimens in standard atmosphere of 23 +/- 2 C and 50 +/- 5% relative humidity for at least 1 h before testing (according to ISO 1110). Moisture content shall be reported to verify the moisture level. 3.1.6 Performance Criteria: Parts using
13、this specification shall meet the appropriate performance specification, WSS-M15P50-F/Latest. 3.1.7 As specified in WSS-M99P1111-A, paragraph 3.2, Ford Materials Engineering may request a Control Plan and Certificate of Analysis (CoA) containing lot testing requirements which must include, but are n
14、ot limited to: Impact Strength, Notched Charpy at 23C Flexural Modulus 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 molded using molding conditions defined in ISO 1874-2. See Ta
15、ble 1 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 (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
16、 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 MATERIAL PROPERTIES 3.3.1 Melt Temperature 250 C (ISO 11357, 10 C/min heating rate) 3.3.2 Density 1.06 1.11 g/cm3 (ISO 1183, M
17、ethod A) ENGINEERING MATERIAL SPECIFICATION WSS-M4D666-B1 Copyright 2014, Ford Global Technologies, LLC Page 3 of 6 3.3.3 Tensile Strength at Yield 44 MPa min (ISO 527-1 and ISO 527-2, Specimen A, 50 mm/minute test speed) 3.3.4 Elongation at Yield 2.0 % min (ISO 527-1 and ISO 527-2, Specimen A, 50 m
18、m/minute test speed 3.3.5 Tensile Modulus 2.0 GPa min (ISO 527-1 and ISO 527-2, Specimen A, 1 mm/minute test speed) 3.3.6 Flexural Modulus 1.7 GPa min (ISO 178, Specimen D, 64 mm support span, 2 mm/minute test speed) 3.3.7 Impact Strength, Notched Charpy (ISO 179-1/1eA, Specimen D) 3.3.7.1 At 23 +/-
19、 2 C 75.0 kJ/m2 min Report Break Type 3.3.7.2 At -40 +/- 2 C 12.0 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
20、 be conducted outside, but within 5 seconds. 3.3.8 Heat Deflection Temperature 50 C min (ISO 75-1 and ISO 75-2, Specimen D, flatwise, 0.34 +/- 0.1 mm deflection. At 1.80 MPa) All specimens dry as molded. If not tested immediately after molding, specimens must be stored in a sealed, moisture-proof co
21、ntainer filled with silica gel. 3.3.9 Heat Aging Performance (ISO 188, 150 +/- 50 air changes/h, 1000 h at 110+/- 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 determ
22、ination) 3.3.9.1 Tensile Strength at Max Load +/- 25% max (Test Method per para 3.3.3) 3.3.9.2 Impact Strength, Notched Charpy +/- 25% max (Test Method per para 3.3.7, specimens to be notched before Heat Aging) 3.3.10 Flammability (ISO 3795/SAE J369, Specimen B, smooth surface) Burn Rate 100 mm/minu
23、te max ENGINEERING MATERIAL SPECIFICATION WSS-M4D666-B1 Copyright 2014, Ford Global Technologies, LLC Page 4 of 6 3.4 MATERIAL PROPERTIES REPORT ONLY Values are retained in Ford Materials Database . 3.4.1 Molding Shrinkage (Report method used, sample size and value) After 48 h at 23 +/- 2 C Flow Rep
24、ort Value, % Cross Flow Report Value, % 3.4.2 Coefficient of Linear Thermal Expansion (ISO 11359-2, -30 +/- 2 C to 60 +/- 2 C) Flow Report Value, E-5 mm/mm/ C Cross Flow Report Value, E-5 mm/mm/ C (ISO 11359-2, 60 +/- 2 C to 120 +/- 2 C) Flow Report Value, E-5 mm/mm/ C Cross Flow Report Value, E-5 m
25、m/mm/ C 3.4.3 Water Absorption Report Value, % (ISO 62, 24 h immersion, Specimen H) 3.4.4 Heat Deflection Temperature (ISO 75-1 and ISO 75-2, Specimen D, flatwise, 0.34 +/- 0.1 mm deflection) At 0.45 MPa Report Value. C min All specimens dry as molded. If not tested immediately after molding, specim
26、ens must be stored in a sealed, moisture-proof container filled with silica gel. 3.4.5 Poissons Ratio Report Ratio (ISO 527-1 and ISO 527-2, Specimen A, 1 mm/minute test speed) 3.4.6 Moisture Conditioned 3.4.6.1 Moisture Content Report % (ISO 15512, Karl Fisher, or ASTM D756-93 weight change method)
27、 Note: Moisture content must be between 1.0 2.0 wt. % before testing para 3.4.6.2, 3.4.6.3, 3.4.6.4, and 3.4.6.5. 3.4.6.2 Tensile Strength at Yield Report Value MPa (ISO 527-1 and ISO 527-2, Specimen A, 50 mm/minute test speed, 23 +/- 2 C 3.4.6.3 Tensile Modulus Report Value GPa (ISO 527-1 and ISO 5
28、27-2, Specimen A, 1 mm/minute test speed) ENGINEERING MATERIAL SPECIFICATION WSS-M4D666-B1 Copyright 2014, Ford Global Technologies, LLC Page 5 of 6 3.4.6.4 Impact Strength, Notched Charpy Report Value kJ/m2 (ISO 179-1/1eA, Specimen D, 23 +/- 2 C) Report Break Type 3.4.6.5 Flexural Modulus Report Va
29、lue GPa (ISO 178, Specimen D, 64 mm support span, 2 mm/minute test speed) 3.4.7 Supplemental Information The following curves are to be submitted with the data packages: FTIR TGA DSC CLTE Engineering Stress/Strain at 23 C and -40 C 4. GENERAL INFORMATION The information given below is provided for c
30、larification and assistance in meeting the requirements of this specification. Contact for questions concerning Engineering Material Specifications. 4.1 TYPICAL PROPERTIES USING METHODS IN SECTION 3.4 Para. Test Typical Value Units 3.4.1 Molding Shrinkage After 48 h at 23 +/- 2 C (For specific meth
31、od and sample size, contact Materials Engineering) Flow Cross Flow 1.6 1.7 % % 3.4.2 Coefficient of Linear Thermal Expansion -30 +/- 2C to 60 +/- 2C Flow Cross Flow 60 +/- 2 C to 120 +/- 2C Flow Cross Flow 10.2 12.5 5.5 14.7 E-5 mm/mm/ C E-5 mm/mm/ C E-5 mm/mm/ C E-5 mm/mm/ C 3.4.3 Water Absorption
32、1.0 % 3.4.4 Heat Deflection Temperature at 0.45 MPa, minimum 90 C 3.4.5 Poissons Ratio 0.4 N/A 3.4.6.1 Moisture Content 2.5 % 3.4.6.2 Moisture Conditioned Tensile Strength at Break 44 GPa 3.4.6.3 Moisture Conditioned Tensile Modulus 0.775 GPa 3.4.6.4 Moisture Conditioned Notched Charpy Impact 120 kJ
33、/m2 3.4.6.5 Moisture Conditioned Flexural Modulus 0.7 GPa 4.2 GENERIC IDENTIFICATION AND MARKING OF PLASTIC PRODUCTS PA66 (ISO 1043/11469) ENGINEERING MATERIAL SPECIFICATION WSS-M4D666-B1 Copyright 2014, Ford Global Technologies, LLC Page 6 of 6 Table 1: Minimum Sample Size Initial Approval New Manu
34、facturing 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 3.1.6 Parts Performance Reference Performance Specification 3.3.1 Melt Temperature 3 1 3 1 1 1 3.3.2 Density 1 3 3 3.3.3 T
35、ensile Strength at Yield* 3 5 15 1 5 5 3.3.4 Elongation at Yield * 3 5 15 1 5 5 3.3.5 Tensile Modulus 1 10 10 3.3.6 Flexural Modulus 3 10 10 1 10 10 3.3.7 Impact Strength Notched Charpy (per condition)* 3 10 30 1 10 10 3.3.8 Heat Deflection Temperature, 1.80 MPa 3 2 6 1 2 2 3.3.9 Heat Aging Performa
36、nce 3.3.9.1 Tensile Strength at -, Change 1 5 5 3.3.9.2 Impact Strength, Notched Charpy, Change 1 10 10 3.3.10 Flammability 1 5 5 3.4.1 Mold Shrinkage 1 5 5 3.4.2 Coefficient of Linear Thermal Expansion (per condition) 1 3 3 3.4.3 Water Absorption 1 3 3 3.4.4 Heat Deflection Temperature, 0.45 MPa 3
37、2 6 1 2 2 3.4.5 Poissons Ratio 1 5 5 1 5 5 3.4.6.1 Moisture Content 1 3 3 3.4.6.2 Moisture Conditioned Tensile Strength at Break 3 5 15 1 5 5 3.4.6.3 Moisture Conditioned Tensile Modulus 1 10 10 3.4.6.4 Moisture Conditioned Notched Charpy Impact 3 10 30 1 10 10 3.4.6.5 Moisture Conditioned Flexural Modulus 3 10 30 1 10 10 3.4.7 Curves - FTIR - TGA - DSC - CLTE - Stress/Strain 1 1 1 per test * For these requirements the 3 sigma value from the raw data is used to meet the requirements. 5. SUMMARY OF REVISIONS
