1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions Rev. 0 2010 01 21 N-STATUS No replacement named J. Crist, NA 2006 07 21 Revised Inserted 3.0, Deleted 3.1, 3.8, 3.9, & 4, Corrected numbering 5. 1996 01 19 Activated K. Gerhards Printed copies are uncontrolled Copyright 2010, Ford Global Techn
2、ologies, LLC Page 1 of 4 POLYPHTHALAMIDE + POLYPROPYLENE (PPA+PP) BLEND WSS-M4D943-A1 MOLDING COMPOUND NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a polyphthalamide + polypropylene blend molding compound. 2. APPLICATION This specification was released origina
3、lly for material used for electrical connector housings. NOTICE: This material absorbs and retains 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. 3. REQUIREMENTS 3.0 STAN
4、DARD 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 All requirements of this specification, identified by symbol (s), shall be met with data representing 3 sigma values. 3
5、3 CONDITIONING AND TEST CONDITIONS All test values indicated herein 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 containers that are impermeable to water vapor
6、 If the moisture content exceeds 0.2%, condition the material for a minimum of 16 h at 40 - 50 C at a reduced pressure below 133 Pa. 3.4 MOLDING COMPOUND (s) 3.4.1 Melt Temperature, min 295 - 302 C (ISO 3146, Method C, 10 C/min heating rate) 3.5 MOLDED TEST SPECIMEN 3.5.1 Preparation of Test Specim
7、ens 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) ENGINEER
8、ING MATERIAL SPECIFICATIONPrinted copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 2 of 4 Test specimen A shall be molded using molding conditions defined in ISO/DIS 1874-2. Specimens with shorter dimensions shall be cut from the center of the specimen A. No annealing allow
9、ed. 3.5.2 Density 1.08 - 1.12 g/cm (ISO 1183, Method A) (s) 3.5.3 Tensile Strength at Yield, min 47 MPa (ISO 527-1 & ISO 527-2, 150 minimum x 10 x 4.0 +/- 0.2 mm specimen, test speed: 50 mm/minute) (s) 3.5.3.1 Elongation at Yield, min 5% (Test Method according to para 3.5.3)(s) 3.5.4 Flexural Modulu
10、s, min 1.93 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 support span) 3.5.5 Shear Modulus at 23 C 672 - 1008 MPa/GPa (ASTM D 5279, forced constant amplitude, fixed frequency of 1 Hz +/- 15%, strain level below 1%. Specimen approx. 60 x
11、 10 x 4.0 +/- 0.2 mm cut from the center of specimen A. Specimen length between clamps 35-40 mm. Soak time at each temperature interval - 3 minutes minimum) Additionally, a shear modulus versus temperature curve shall be plotted for -50 to +200 C temperature range, at 5 C minimum intervals. The plot
12、ted curve must be within tolerance range granted on the original material approval and it shall constitute the reference standard for materials supplied to this specification and shall be kept on file at the designated material laboratory and be available on request. (s) 3.5.6 Impact Strength, Izod,
13、 min (ISO 180/1A, 80 x 10 x 4.0 +/- 0.2 mm specimen use center section of specimen A, 10 specimens for each test) 3.5.6.1 At 23 +/- 2 C 5.1 kJ/m 3.5.6.2 At -40 +/- 1 C 3.4 kJ/m 3.5.6.3 At -20 +/- 2 C 3.2 kJ/m The test specimen must be conditioned for minimum of 6 hours at the above specified tempera
14、ture 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. ENGINEERING MATERIAL SPECIFICATIONPrinted copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 3 of 4 (s) 3.5.7 Heat D
15、eflection Temperature, min 80 C (ISO 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) 3.5.8 Heat Aging Performance (ISO 188, except 150 +/- 50 air changes/h, 1000 h at 100 +/- 2 C. After heat aging test specimen
16、s 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) 3.5.8.1 Tensile Strength at Yield Change +/- 25% 3.5.8.2 Impact Strength, Izod Change +/- 25% (Test Method per para 3.5.6.1, specimens to be
17、 notched before heat aging) 3.6 FOGGING (SAE J1756, 3 h at 100 C heating, 21 C cooling plate, post test conditioning 1 h) Fog Number, min 90 Formation of clear film, droplets or crystals is cause for rejection. 3.7 FLAMMABILITY (ISO 3795/SAE J369) Burn Rate, max 100 mm/minute The specimen size requi
18、red for material approval is 355 x 100 x 1.0 +/- 0.1 mm (use specimen C) with a smooth surface. 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION 6.3 - 8.1-5/
19、C (ASTM E 831 TMA, temperature range -30 to +30 C) 5.2 MOLD SHRINKAGE (ISO/DIS 294-3, 60 x 60 x 2.0 +/- 0.1 mm injection molded specimen) 5.2.1 Molding Shrinkage . After 48 h at 23 +/- 2 C 1.9 - 2.1% 5.2.2 Post Shrinkage (Separate specimens required for each test) . After 48 h at 80 C 1.9 - 2.1% . A
20、fter 30 minutes at 120 C 1.9 - 2.1% ENGINEERING MATERIAL SPECIFICATIONPrinted copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 4 of 4 5.3 WATER ABSORPTION 0.4% (ISO 62, 24 h immersion, 50 +/- 1 mm diameter, 3.2 +/- 0.2 mm thick specimen) 5.4 HEAT DEFLECTION TEMPERATURE 85 C
21、 (ISO 75-1 & ISO 75-2, 80 x 10 x 4.0 +/- 0.2 mm specimen use center section of specimen A, edgewise, 0.34 +/- 0.1 mm deflection. At 1.80 MPa) 5.5 MODULUS OF ELASTICITY 2.08 GPa (ISO 527-1 & ISO 527-2, 150 minimum x 10 x 4.0 +/- 0.2 mm specimen, test speed: 1 mm/minute) 5.6 IMPACT STRENGTH, CHARPY (I
22、SO 179/1eA, 80 x 10 x 4.0 +/- 0.2 mm specimen (use center section of specimen A), 10 specimens for each test) 5.6.1 At 23 +/- 2 C 16.6 kJ/m 5.6.2 At -40 +/- 1 C 4.0 kJ/m 5.6.3 At -20 +/- 2 C 6.6 kJ/m 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, but within 5 seconds. 5.7 MATERIAL IDENTIFICATION FOR RECYCLING PURPOSES PPA+PP
