1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2014 10 21 N Status Replaced by WSS-M4D822-B1 R. Harris, NA 2006 03 31 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.8, 3.9 & 4 1991 08 01 Released EP00E01089487000 M. Siewert Controlled document at www.MATS Copyright 2014, Ford Global Technologi
2、es, LLC Page 1 of 5 POLYAMIDE 6 (PA6), HEAT STABILIZED WSK-M4D822-A 40% GLASS FIBER/MINERAL REINFORCED MOLDING COMPOUND NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a heat stabilized 15% glass fiber and 25% mineral reinforced polyamide 6 molding compound. 2. A
3、PPLICATION This specification was released originally for material used for engine cooling fan and fan shroud. 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
4、service/assembly environment. 3. REQUIREMENT 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.3 CONDITIONING AND TEST CONDITIONS All test values indicated herein ar
5、e based on material and specimens with moisture content not exceeding 0.2% (test according to ISO 960, Method B/ASTM D 789). All test materials immediately after processing have to be sealed in containers that are impermeable to water vapor. If the moisture content exceeds 0.2%, condition the materi
6、al for a minimum of 16 h at 40 - 50 C at a reduced pressure below 133 Pa. 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. 3.4 MOLDING COMPOUND 3.4.1 Glass Fiber/
7、Mineral Content 38 - 42% (ISO 3451/4, test temperature 600 +/- 25 C, test portion 1 g) 3.4.2 Melt Temperature 210 - 225 C (ISO 1218, Method B/ASTM D 789, or DSC - ASTM E 794) ENGINEERING MATERIAL SPECIFICATION WSK-M4D822-A Copyright 2014, Ford Global Technologies, LLC Page 2 of 5 3.5 MOLDED TEST SPE
8、CIMEN 3.5.1 Preparation of Test 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 min x 10 x 4.0 +/- 0.2 mm (Tensile Bar, ISO 3167) B. 120 x 10 x 4.0 +/- 0.2 mm Specimens with shorter di
9、mensions shall be cut from the center portion of the test specimen A and/or B. The specimens shall be prepared according to ISO 294. No annealing allowed. 3.5.2 Density 1.42 - 1.50 g/cm3 (ISO 1183, Method A/ASTM D 792, Method A1) 3.5.3 Tensile Strength at Max Load, min 100 MPa (ISO R 527/ASTM D 638M
10、, 150 x 10 x 4.0 +/- 0.2 mm specimen, 5 mm/minute test speed) 3.5.4 Flexural Modulus, min 6 GPa (ISO 178/ASTM D 790M, Method I, Procedure A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 64 mm support span) 3.5.5 Shear Modulus at 23 C 2.27 - 3.79 GPa (ASTM D 4065, forced constant amplitude, fixed frequency of
11、1 Hz +/- 15%, strain level below 1%. Specimen approx. 60 x 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 vs. Temperature curve shall be plotted for -50 to +210
12、 C temperature range, at 5 C minimum intervals. The plotted curve must be within tolerance range shown on page 5. 3.5.6 Impact Strength, Izod, min (ISO 180, Method A/ASTM D 256, Method A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 10 specimens for each test) 3.5.6.1 At 23 +/- 2 C 3.0 kJ/m2 3.5.6.2 At -40 +/
13、- 2 C 2.5 kJ/m2 ENGINEERING MATERIAL SPECIFICATION WSK-M4D822-A Copyright 2014, Ford Global Technologies, LLC Page 3 of 5 The test specimens must be conditioned for minimum of 6 h at the above specified temperature prior to impact test. Low temperature testing shall be done within the cold box, if n
14、ot possible, test can be conducted outside, but within 5 s. 3.5.7 Heat Deflection Temperature, min (ISO 75/ASTM D 648, 120 x 10 x 4.0 +/- 0.2 mm specimen) 3.5.7.1 At 1.82 MPa 190 C 3.5.7.2 At 0.45 MPa 205 C 3.5.8 Heat Aging Performance (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 1000 h at 140 +/-
15、 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) 3.5.8.1 Impact Strength, Izod Change +/- 25% (Test Method per para 3.5.6.1, specimens to be notched befo
16、re heat aging) 3.6 FLAMMABILITY (ISO 3795) Burn Rate, max 100 mm/minute The specimen size required for material approval is 355 x 100 x 1.0 +/- 0.1 mm with a smooth surface. 3.7 FOGGING (FLTM BO 116-03) Fog Number, min 90 Formation of excessive amounts of clear film or droplets is cause for rejectio
17、n. 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 3 - 5-5/ C (ASTM D 696) ENGINEERING MATERIAL SPECIFICATION WSK-M4D822-A Copyright 2014, Ford Global Techno
18、logies, LLC Page 4 of 5 5.2 MOLD SHRINKAGE (ISO 2577, approx. 150 x 100 x 3.2 +/- 0.2 mm injection molded specimen) 5.2.1 Molding Shrinkage . After 48 h at 23 +/- 2 C 0.4 - 1.0% 5.2.2 Post Shrinkage (Separate specimens required for each test) . After 48 h at 80 C 0.1 - 0.2% . After 30 minutes at 120
19、 C 0.15 - 0.30% 5.3 WATER ABSORPTION 0.5 - 1.0% (ISO 62, 24 h/ASTM D 570, 24 h, 50 +/- 1 mm diameter, 3.2 +/- 0.2 mm thick specimen) 5.4 IMPACT STRENGTH, IZOD, min (ISO 180, Method A/ASTM D 256, Method A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 10 specimens minimum) 5.4.1 After Moisture Conditioning 8 kJ
20、/m2 The notched specimens shall be immersed for 48 h in distilled water at 50 +/- 1 C and subsequently conditioned for 1 h at 23 +/- 2 C and 50 +/- 5% relative humidity prior to test and tested under the same conditions within 1 h. 5.5 RECYCLING CODE SAE OPTIONAL PA6-(GF+M)40 ENGINEERING MATERIAL SPECIFICATION WSK-M4D822-A Copyright 2014, Ford Global Technologies, LLC Page 5 of 5
