1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 01 21 N-STATUS No replacement named J. Crist, NA 2006 07 19 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.8, 3.9 & 4 1995 02 01 Released EP00E10460360001 K. Gerhards Printed copies are uncontrolled Copyright 2010, Ford Global Technologie
2、s, LLC Page 1 of 4 POLYETHER BLOCK AMIDE (PEBA), HEAT AND UV STABILIZED WSS-M4D930-A1 EXTRUSION AND INJECTION MOLDING COMPOUND NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a heat and UV stabilized thermoplastic elastomer based on polyether block amide extrusio
3、n and injection molding compound. 2. APPLICATION This specification was released originally for material used for vacuum tubes. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production M
4、aterials (WSS-M99P1111-A). 3.1.1 All requirements of this specification, identified by symbol(s), shall be met with data representing 3 sigma values. 3.4 MOLDING COMPOUND (s) 3.4.1 Melt Temperature, min 167 - 177 C (ISO 3146, Method C, 10 C/min heating rate) 3.5 MOLDED TEST SPECIMEN 3.5.1 Preparatio
5、n 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 dimensions shall be cut
6、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 1.00 - 1.03 g/cm (ISO 1183, Method A) (s) 3.5.3 Tensile Strength at Yield, min 20 MPa (ISO R 527, 150 minimum x 10 x 4.0 +/- 0.2 mm specimen, 50 mm/min t
7、est speed) ENGINEERING MATERIAL SPECIFICATIONWSS-M4D930-A1Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 2 of 4 (s) 3.5.3.1 Elongation at Yield, min 25% (Test Method according to para 3.5.3) (s) 3.5.4 Flexural Modulus, min 350 MPa (ISO 178, 80 x 10 x 4.0 +/- 0.2 m
8、m specimen, 2 mm/min test speed, 64 mm support span) 3.5.5 Shear Modulus at 23 C 105 - 155 MPa (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
9、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 +130 C temperature range, at 5 C minimum intervals. The plotted curve must be within tolerance range shown on page 4. (s) 3.5.6 Impact Strength, Iz
10、od, 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 No Break3.5.6.2 At -20 +/- 1 C 9 kJ/m3.5.6.3 At -40 +/- 1 C 7 kJ/mThe test specimens must be conditioned for minimum of 6 h at the above specified temperature prior to impact test. Low temperatu
11、re testing shall be done within the cold box. (s) 3.5.7 Heat Deflection Temperature, min (ISO 75, 120 x 10 x 4.0 +/- 0.2 mm specimen, edgewise, 0.32 +/- 0.01 mm deflection) 3.5.7.1 At 0.45 MPa 95 C 3.5.8 Heat Aging Performance (ISO 188, except 150 +/- 50 air changes/h, 1000 h at 130 +/- 2 C. After h
12、eat 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 Tensile Strength at Max Load Change +/- 25% (Test Method per para 3.5.3) ENGINEERING MATERIAL SPECIFICATIONWS
13、S-M4D930-A1Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 3 of 4 3.5.8.2 Impact Strength, Izod, min No Break (Test Method per para 3.5.6.1, specimens to be notched before heat aging) 3.6 FOGGING (FLTM BO 116-03, 3 h at 100 C heating, 21 C cooling plate) Fog Number
14、, min 70 Formation of clear film, droplets or crystals is cause for rejection. 3.7 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. 5. GENERAL INFORMATION The information given below is provided
15、 for clarification and assistance in meeting the requirements of this specification. 5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION 12 16-5/ 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 Shrin
16、kage . After 48 h at 23 +/- 2 C 0.9 - 1.4% 5.2.2 Post Shrinkage (Separate specimens required for each test) . After 48 h at 80 C 0.07 - 0.2% . After 30 min at 120 C 0.12 - 0.4% 5.3 WATER ABSORPTION 0.5% (ISO 62, 24 h immersion, 50 +/- 1 mm diameter, 3.2 +/- 0.2 mm thick specimen) 5.4 RECYCLING CODE PEBA ENGINEERING MATERIAL SPECIFICATIONWSS-M4D930-A1Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 4 of 4
