1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2006 07 19 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.7, 3.8 & 4 1995 06 07 Activated M. Trapp Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 1 of 5 POLYAMIDE 6 (PA6), IMPACT MODIFIED, HEAT WSS-M4D933-A1 STAB
2、ILIZED EXTRUSION MOLDING COMPOUND 1. SCOPE The material defined by this specification is an extrusion grade of a thermoplastic impact modified molding compound based on polyamide 6. 2. APPLICATION This specification was released originally for material used for convoluted tubing. The material is des
3、ignated for under-the-hood and exterior use only. 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 RE
4、QUIREMENTS 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. 3.3 CONDI
5、TIONING 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. If the
6、 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 50 +/- 5% relative humidity. Individual specimens shall not be removed from closed containers until immediately bef
7、ore testing. 3.4 MOLDING COMPOUND (s) 3.4.1 Melt Temperature, min 210 C (ISO 3146, Method C, 10 C/min heating rate) ENGINEERING MATERIAL SPECIFICATIONWSS-M4D933-A1Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 2 of 5 3.5 MOLDED TEST SPECIMEN 3.5.1 Preparation of T
8、est 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 dimensions shall be cut from t
9、he 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 1.06 - 1.13 g/cm (ISO 1183, Method A) (s) 3.5.3 Tensile Strength at Yield, min 32 MPa (ISO R 527, 150 minimum x 10 x 4.0 +/- 0.2 mm specimen, 50 mm/min test sp
10、eed) (s) 3.5.3.1 Elongation at Yield, min 3.0% (Test Method according to para 3.5.3) (s) 3.5.4 Flexural Modulus, min 0.50 - 2.50 GPa (ISO 178, 80 x 10 x 4.0 +/- 0.2 mm specimen, 2 mm/min test speed, 64 mm support span) 3.5.5 Shear Modulus at 23 C 408 - 960 MPa (ASTM D 4065, forced constant amplitude
11、, 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 each temperature interval - 3 minutes minimum) Additionally, a Shear Modulus versus Temperature curve shall be
12、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. ENGINEERING MATERIAL SPECIFICATIONWSS-M4D933-A1Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 3 of 5 (s) 3.5.6 Impact Strength,
13、 Izod, min (ISO 180/1A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 10 specimens for each test) 3.5.6.1 At 23 +/- 2 C 6.0 kJ/m 3.5.6.2 At -40 +/- 1 C 2.0 kJ/m3.5.6.3 At -20 +/- 2 C 3.5 kJ/mThe test specimens must be conditioned for minimum of 6 h at the above specified temperature prior to impact test. Low t
14、emperature testing shall be done within the cold box. (s) 3.5.7 Heat Deflection Temperature, min 38 C (ISO 75, 120 x 10 x 4.0 +/- 0.2 mm specimen, edgewise, 0.32 +/- 0.01 mm deflection. At 1.80 MPa) All specimens dry as molded. If not tested immediately after molding, specimens must be stored in a s
15、ealed, moisture-proof container filled with silica gel. 3.5.8 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 property values shall be determined at the ti
16、me of the aged properties determination) 3.5.8.1 Tensile Strength at Yield Percent Change +/- 25% 3.5.8.2 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/SAE J369) Burn Rate, max 100 mm/minute The specimen size
17、 required for material approval is 355 x 100 x 2.5 +/- 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. ENGINEERING MATERIAL SPECIFICATIONWSS-M4D933-A1Printed copies are un
18、controlled Copyright 2006, Ford Global Technologies, LLC Page 4 of 5 5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION 15.8-5/ C (ASTM E 831 TMA, temperature range -30 to +30 C) 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
19、 at 23 +/- 2 C 1.8% 5.2.2 Post Shrinkage (Separate specimens required for each test) . After 48 h at 80 C 1.8% . After 30 min at 120 C 1.8% 5.3 WATER ABSORPTION, max 1.6% (ISO 62, 24 h immersion, 50 +/- 1 mm diameter, 3.2 +/- 0.2 mm thick specimen) 5.4 IMPACT STRENGTH, IZOD, min (ISO 180/A1, 80 x 10
20、 x 4.0 +/- 0.2 mm specimen, 10 specimens minimum) 5.4.1 After Moisture Conditioning 48 kJ/m 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 con
21、ditions within 1 h. 5.5 HEAT DEFLECTION TEMPERATURE 58 C (ISO 75, 120 x 10 x 4.0 +/- 0.2 mm specimen, edgewise, 0.32 +/- 0.01 mm deflection. At 0.45 MPa) 5.6 ELONGATION AT BREAK, min 30.0% (Test Method according to para 3.5.3) 5.7 RECYCLING CODE PA6 ENGINEERING MATERIAL SPECIFICATIONWSS-M4D933-A1Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 5 of 5
