1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2006 07 18 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.8, 3.9 & 4 1994 08 31 Released NGA1E10370437008 C.C. Gray Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 1 of 5 POLYAMIDE 6 (PA6), 33% GLASS/MINERAL REINF
2、ORCED WSH-M4D917-A MOLDING COMPOUND NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a 33% glass/mineral reinforced polyamide 6 molding compound. 2. APPLICATION This specification was released originally for material used for blower wheels. NOTICE: This material a
3、bsorbs 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 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers
4、 must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.3 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/ASTM D 789). All test
5、 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 material 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
6、50 +/- 5% relative humidity. Individual specimens shall not be removed from closed containers until immediately before testing. 3.4 MOLDING COMPOUND 3.4.1 Filler Content 31 - 35% (ISO 3451/4, test temperature 600 +/- 25 C, test portion 1 g) 3.4.2 Melt Temperature 210 - 220 C (ISO 3146, Method C, 10
7、C/min heating rate) ENGINEERING MATERIAL SPECIFICATIONWSH-M4D917-APrinted copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 2 of 5 3.5 MOLDED TEST SPECIMEN 3.5.1 Preparation of Test Specimens Unless otherwise specified all tests shall be carried out on injection molded one-e
8、nd 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 dimensions shall be cut from the center portion of the test specimen A and/or B. The specimens shall be prepared according to I
9、SO 294. No annealing allowed. 3.5.2 Density 1.39 - 1.43 g/cm3(ISO 1183, Method A) 3.5.3 Tensile Strength at Max Load, min 80 MPa (ISO R 527, 150 min x 10 x 4.0 +/- 0.2 mm specimen, 5 mm/minute test speed) 3.5.4 Flexural Modulus, min 5.5 MPa (ISO 178, 80 x 10 x 4.0 +/- 0.2 mm specimen, 2 mm/min test
10、speed, 64 mm support span) 3.5.5 Shear Modulus at 23 C 1.4 - 2.1 GPa (ASTM D 4065, forced constant amplitude, fixed frequency of 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 eac
11、h temperature interval - 3 minutes minimum) Additionally, a Shear Modulus vs. Temperature curve shall be plotted for -50 to +240 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 180/1A, 80 x 10 x 4.
12、0 +/- 0.2 mm specimen, 10 specimens for each test) 3.5.6.1 At 23 +/- 2 C 2.2 kJ/m23.5.6.2 At -40 +/- 2 C 1.4 kJ/m2The 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 not possi
13、ble, test can be conducted outside, but within 5 s. ENGINEERING MATERIAL SPECIFICATIONWSH-M4D917-APrinted copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 3 of 5 3.5.7 Heat Deflection Temperature, min (ISO 75, 120 x 10 x 4.0 +/- 0.2 mm specimen, edgewise, at standard deflec
14、tion of 0.32 +/- 0.01 mm) 3.5.7.1 At 1.80 MPa 184 C 3.5.7.2 At 0.45 MPa 203 C 3.5.8 Heat Aging Performance (ISO 188, except 150 +/- 50 air changes/h, 1000 h at 140 +/- 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 b
15、e 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 before heat aging) 3.6 FLAMMABILITY (ISO 3795) Burn Rate, max 100 mm/minute The specimen size required for material approval is 355 x 100
16、 x 1.0 +/- 0.1 mm with a smooth surface. 3.7 FOGGING (FLTM BO 116-03) Fog Number, min 90 Formation of a clear film, droplets or crystals is cause for rejection. 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specifi
17、cation. 5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION 4.3-5/ C (ASTM E 831 TMA) 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 0.50% ENGINEERING MATERIAL SPECIFICATIONWSH-M4D917-APrinted copies are uncontro
18、lled Copyright 2006, Ford Global Technologies, LLC Page 4 of 5 5.2.2 Post Shrinkage (Separate specimens required for each test) . After 48 h at 80 C 0.055% . After 30 min. at 120 C 0.059% 5.3 WATER ABSORPTION 1.08% (ISO 62, 24 h, 50 +/- 1 mm diameter, 3.2 +/- 0.2 mm thick specimen) 5.4 ELONGATION AT
19、 MAX LOAD, min 4.0% (Test method according to para 3.5.3) 5.5 IMPACT STRENGTH, IZOD, min (ISO 180/1A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 10 specimens minimum) 5.5.1 After Moisture Conditioning 11.8 kJ/m2The notched specimens shall be immersed for 48 h in distilled water at 50 +/- 1 C and subsequentl
20、y 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 PA6-(GF+M) 33 ENGINEERING MATERIAL SPECIFICATIONWSH-M4D917-APrinted copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 5 of 5
