1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2003 10 15 Activated L. Rodigas Printed copies are uncontrolled Copyright 2003, Ford Global Technologies, Inc. Page 1 of 5 POLYAMIDE 6 + POLYPROPYLENE BLEND (PA6 + PP), 8% WSS-M4D976-A GLASS FIBER REINFORCED MOLDING COMPOUND 1. SCOPE The mater
2、ial defined by this specification is an 8% glass fiber reinforced polyamide 6 + polypropylene blend molding compound. 2. APPLICATION This specification was released originally for material used for functional fastener plugs/body. NOTICE: This material absorbs and retains moisture. Part design and to
3、lerances must accommodate changes in part dimensions and physical properties due to moisture absorption or loss in the service/assembly environment. 3. REQUIREMENTS 3.1 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirem
4、ents For Production Materials (WSS-M99P1111-A). Deviating for this all test values indicated in this specification are based on material and specimens with moisture content not exceeding 0.2% (test according to ISO 960, Method B). All test materials immediately after processing have to be sealed in
5、containers that are impermeable to water vapor. If the moisture content exceeds 0.2% condition the material for a minimum of 16 h at 40 - 50 C at reduced pressure below 133 Pa. Conduct tests in a controlled atmosphere of 23 +/- and 50 +/- 5% relative humidity. Individual specimens shall not be remov
6、ed from closed containers until immediately before testing. 3.1.1 All requirements of this specification, identified by symbol (s), shall be met with data representing 3 sigma values using latest ISO test methods. 3.2 MOLDING COMPOUND (s) 3.2.1 Glass Fiber Content 6.5 - 9.5% (ISO 3451-4, test temper
7、ature 600 +/- 25 C, test portion 1g) 3.2.2 Melt Temperature, min 165 C (ISO 3146, Method C, 10 C/min heating rate) ENGINEERING MATERIAL SPECIFICATIONWSS-M4D976-APrinted copies are uncontrolled Copyright 2003, Ford Global Technologies, Inc. Page 2 of 5 3.3 MOLDED TEST SPECIMEN 3.3.1 Preparation of Te
8、st Specimens Unless otherwise specified all tests shall be carried out on injection molded one-end gated test specimens. The following dimensions are required: A. 150 minimum x 10 x 4.0 +/- 0.2 mm (ISO 3167, Type 1A) B. 60 x 60 x 2.0 +/- 0.1 mm (ISO/DIS 294-3) C. 355 x 100 x 1.0 +/-0.1 mm (ISO 3795)
9、 Test specimen A shall be molded using molding conditions defined in ISO 1874-2. Specimens with shorter dimensions shall be cut from the center of the specimen A. No annealing allowed. 3.3.2 Density 1.07 - 1.1 g/cm3(ISO 1183, Method A) (s) 3.3.3 Tensile Strength at Yield, min 60 MPa (ISO 527-1 & ISO
10、 527-2, 150 minimum x 10 x 4.0 +/- 0.2 mm specimen, test speed: 5 mm/minute) (s) 3.3.3.1 Elongation at Break, min 3% (Test Method according to para 3.3.4) (s) 3.3.4 Flexural Modulus, min 2.8 GPa (ISO 178, 80 x 10 x 4.0 +/- 0.2 mm specimen use center section of specimen A, 2 mm/min test speed, 64 mm
11、support span) 3.3.5 Shear Modulus at 23 C 0.9 - 1.3 Gpa (ASTM D 5279, forced constant amplitude, fixed frequency of 1Hz +/- 15%, strain level below 1%. Specimen length between clamps 35 - 40 mm. Soak time at each temperature interval - 3 minutes minimum) (s) 3.3.6 Impact Strength, Izod, min (ISO 180
12、/1A, 80 x 10 x 4.0 +/- 0.2 mm specimen use center section of specimen A, 10 specimens for each test) ENGINEERING MATERIAL SPECIFICATIONWSS-M4D976-APrinted copies are uncontrolled Copyright 2003, Ford Global Technologies, Inc. Page 3 of 5 3.3.6.1 At 23 +/- 2 C 7 kJ/m23.3.6.2 At - 40 +/- 1 C 4 kJ/m2Th
13、e 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, but within 5 seconds. (s) 3.3.7 Heat Deflection Temperature, min 100 C (I
14、SO 75-1 & ISO 75-2, 80 x 10 x 4.0 +/- 0.2 mm specimen use center section of specimen A, 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 container filled with silica gel. (s)
15、3.3.8 Vicat Softening Temperature, min 140 C (ISO 306, 10 x 10 x 4.0 +/- 0.2 mm specimens use center section of specimen A. Bath - silicone oil, temperature raise 50 +/- 5 C/h. Dial gage reset to O after addition of 5 kg weight. At 50 N load) All specimens dry as molded. If not tested immediately af
16、ter molding, specimens must be stored in a sealed, moisture-proof container filled with silica gel. 3.3.9 Heat Aging Performance (ISO 188, except 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 p
17、roperty values shall be determined at the time of the aged properties determination) 3.3.9.1 Impact Strength, Izod Change +/- 25% (Test Method per para 3.3.6.1, specimens to be notched before heat aging) ENGINEERING MATERIAL SPECIFICATIONWSS-M4D976-APrinted copies are uncontrolled Copyright 2003, Fo
18、rd Global Technologies, Inc. Page 4 of 5 3.4 FOGGING (SAE J1756, 3 h at 100 C heating, 21 C cooling plate, post test conditioning 1 h and 16 h) Fog Number, min 80 Formation of clear film, droplets or crystals is cause for rejection. 3.5 FLAMMABILITY (ISO 3795/SAE J369) Burn Rate, max 100 mm/minute T
19、he specimen size required for material approval is 355 x 100 x 1.0 +/- 0.1 mm (use specimen C) with a smooth surface. 4. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 4.1 COEFFICIENT OF LINEAR THERMAL E
20、XPANSION 3 - 8E-5/C (ISO 11359-2 TMA, temperature range - 30 - + 30 C) 4.2 MOLD SHRINKAGE (ISO 294-3 and 294-4, 60 x 60 x 2.0 +/- 0.1 mm injection molded specimen) 4.2.1 Molding Shrinkage . After 48 h at 23 +/- 2 C 1.0 - 1.3% 4.2.2 Post Shrinkage (Separate specimens required for each test) . After 4
21、8 h at 80 C 0.15% . After 30 minutes at 120 C 0.2% 4.3 WATER ABSORPTION 0.7% (ISO 62, 24 h immersion, 50 +/- 1 mm diameter, 3.2 +/- 0.2 mm thick specimen) ENGINEERING MATERIAL SPECIFICATIONWSS-M4D976-APrinted copies are uncontrolled Copyright 2003, Ford Global Technologies, Inc. Page 5 of 5 4.4 IMPA
22、CT STRENGTH, CHARPY, min (ISO 179/1eA, 80 x 10 x 4.0 +/- 0.2 mm specimen (use center section of specimen A), 10 specimens minimum for each test) 4.4.1 At 23 +/- 2 C 8 kJ/m24.4.2 At - 40 +/- 2 C 4 kJ/m2The test specimen must be conditioned for minimum of 6 hours at the above specified temperature pri
23、or 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. 4.5 MODULUS OF ELASTICITY 3.4 GPa (ISO 527-1 & ISO 527-2, 150 minimum x 10 x 4.0 +/- 0.2 mm specimen test speed: 5 mm/minute) 4.6 SHEAR MODULUS VERS
24、US TEMPERATURE CURVE This curve can be plotted for - 50 to + 120 C temperature range, at 5 C minimum intervals. The plotted curve should be within a tolerance range as granted on the original material approval according para 3.3.5 for 23 C and it may be applicable as additional valuation criterion for materials supplied to this specification and shall be kept on file at the designated material laboratory and be available on request. 4.7 MATERIAL IDENTIFICATION FOR RECYCLING PURPOSES PA6+PP-GF8
