1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2006 04 28 N-STATUS Replaced by WSK-M4D666-A; Inserted 3.0; Deleted 3.1, 3.2, 3.7, 3.8 & 4 A. Reaume/M. Masserant1988 06 15 SM/EQ4331 TP Released M. Siewert Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 1 o
2、f 4 POLYAMIDE (PA) 66, IMPACT MODIFIED WSK-M4D598-A NOT TO BE USED FOR NEW DESIGN 1. SCOPE The materials defined by this specification is a polyamide 66 molding compound modified with a polyethylene copolymer. 2. APPLICATION This specification was released originally for material used for cable clam
3、ps. 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 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material s
4、uppliers 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 are based on material and specimens with moisture content not exceeding 0.2% (test according to ISO R 960, M
5、ethod 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 material for a minimum of 16 h at 40 - 50 C at a reduced pressure below 133 kPa. Conduct tests in a controlled
6、 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 Melting Point, min 255 C (ISO 1218, Method B/ASTM D 789) 3.5 MOLDED TEST SPECIMEN 3.5.1 Preparation of Test Specime
7、ns Unless otherwise specified all tests shall be carried out on injection molded one-end gated test specimens. ENGINEERING MATERIAL SPECIFICATIONWSK-M4D598-A Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 2 of 4 The following dimensions are required: A. 150 x 10 x
8、 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 ISO 294. No annealing allowed. 3.5.2 Density 1.10 - 1.13 g/cm3(ISO 1183, Method A/
9、ASTM D 792, Method A1) 3.5.3 Tensile Strength at Yield, min 65 MPa (ISO R 527/ASTM D 638M, 150 x 10 x 4.0 +/- 0.2 mm specimen, 50 mm/minute test speed) 3.5.4 Flexural Modulus, min 2.3 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
10、Modulus at 23 C 0.76 - 1.15 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.) Additionally, a Shear Modulus vs. Temperature curve shall be plotted for -50 to +250 C temper
11、ature range, at 5 C minimum intervals. The plotted curve must be within tolerance range shown on page 6. 3.5.6 Impact Strength, Izod, min (ISO 180, Method A/ASTM D 256, Method A, 63.5 x 10 x 4.0 +/- 0.2 mm specimen, 10 specimens for each test) 3.5.6.1 At 23 +/- 2 C 5 kJ/m23.5.6.2 At - 40 +/- 2 C 4 k
12、J/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 possible, test can be conducted outside, but within 5 s. 3.5.7 Heat Deflection Temperature, min (ISO 75/ASTM D 648,
13、 120 x 10 x 4.0 +/- 0.2 mm specimen) 3.5.7.1 At 1.82 MPa 65 C 3.5.7.2 At 0.45 MPa 210 C ENGINEERING MATERIAL SPECIFICATIONWSK-M4D598-A Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 3 of 4 3.5.8 Heat Aging Performance (ISO 188/ASTM D 573, 1000 h at 120 +/- 2 C. Af
14、ter heat aging test specimens are to be conditioned in a desiccator for 3 - 5 h at 23 +/- 2 C) 3.5.8.1 Tensile Strength at Max +/- 15% Load Change (Test Method per para 3.5.3) 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
15、 +/- 0.1 mm 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 6.5 - 8.5-5/C (ASTM D 696) 5.2 MOLD SHRINKAGE (ISO 2577, approx. 150 x 100
16、 x 3.2 +/- 0.2 mm injection molded specimen) 5.2.1 Molding Shrinkage . After 48 h at 23 +/- 2 C 1.0 - 1.9% 5.2.2 Post Shrinkage (Separate specimens required for each test) . After 48 h at 80 C 0.06 - 0.14% . After 30 minute at 120 C 0.2 - 0.4% 5.3 WATER ABSORPTION 0.8 - 1.2% (ISO 62, 24 h/ASTM D 570
17、, 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, 63.5 x 10 x 4.0 +/- 0.2 mm specimen, 10 specimens minimum) 5.4.1 After Moisture Conditioning 15 kJ/m2The 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. ENGINEERING MATERIAL SPECIFICATIONWSK-M4D598-A Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 4 of 4
