1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 01 08 N-STATUS No replacement named J. Crist, NA 2005 09 13 Revised Format Revised 2002 09 30 Activated C. Lin Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 1 of 4 POLYAMIDE (PA) 66 MOLDING COMPOUND, 2
2、5% GLASS WSS-M4D628-A2 SPHERE REINFORCED, FIRE RETARDANT, INTERIOR NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a 25% glass sphere reinforced, fire retardant thermoplastic nylon molding compound based on polyamide 66. 2. APPLICATION This specification was rele
3、ased originally for material used for interior ashtray applications. 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. REQUIREME
4、NTS 3.1 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.2 MOLDING COMPOUND 3.2.1 Glass Sphere Content 24 - 28% (ISO 3451-1, Method A, or ISO 2451-2, -3, -4, or -5 at 6
5、00 +/- 25 C) 3.2.2 Melt Temperature, min 260 C (ISO 3146, Method C, 10C/min. heating rate) 3.3 MOLDED TEST SPECIMEN 3.3.1 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
6、. 150 min x 10 x 4.0 +/- 0.2 mm (ISO 3167, Type 1A) B. 60 x 60 x 2.0 +/- 0.1 mm (ISO/DIS 294-3) C. 125 x 12.5 x 1.6 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. E
7、NGINEERING MATERIAL SPECIFICATIONWSS-M4D628-A2 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 2 of 4 3.3.2 Density 1.44-1.50 g/cm (ISO 1183, Method A) 3.3.3 Tensile Strength at Max Load, min 45 MPa (ISO R 527,150 min x 10 x 4.0 +/- 0.2 mm specimen, 5 mm/min test s
8、peed) 3.3.4 Flexural Modulus, min 4.1 GPa (ISO 178, Method I, Procedure A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 64 mm support span) 3.3.5 Impact Strength, Izod, min (ISO 180, Method A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 10 specimens for each test) 3.3.5.1 At 23 +/- 2 C 2.0 J/m 3.3.5.2 At -40 +/- 2 C 1
9、.5 J/m 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 not possible, test can be conducted outside, but within 5 s. 3.3.6 Heat Deflection Temperature, min 75 C (ISO 75-1 a
10、nd ISO 75-2, 80 x 10 x 4.0 +/- 0.2 mm specimen (use center section of specimen A), flatwise, 0.34 +/- mm deflection at 1.8 MPa) 3.3.7 Heat Aging Performance (ISO 188, 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 propert
11、y values shall be determined at the time of the aged properties determination) 3.3.7.1 Impact Strength, Izod Change +/- 20% (Test Method per para 3.5.6.1, specimens to be notched before heat aging) 3.4 FLAMMABILITY (ISO 3795) Burn Rate, max Material shall not ignite 3.5 FOGGING 90 (SAE J1756, 3 h at
12、 100 C heating, 21 C Cooling plate, post test conditioning 1 h and 16 h) Formation of clear film, droplets or crystal is cause for rejection. ENGINEERING MATERIAL SPECIFICATIONWSS-M4D628-A2 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 3 of 4 4. GENERAL INFORMATI
13、ON The information given below is provided for clarification and assistance in meeting the requirements of this specification. 4.1 COEFFICIENT OF LINEAR THERMAL EXPANSION 7 -5/ C (ASTM E 831 (TMA), temperature range -30 to +50 C) 4.2 MOLD SHRINKAGE (ISO 2577, approx. 150 x 100 x 3.2 +/- 0.2 mm injec
14、tion molded specimen) 4.2.1 Molding Shrinkage After 48 h at 23 +/- 2 C 1.06-1.51% Report both the flow and crossflow directions. 4.2.2 Post Shrinkage (Separate specimens required for each test) After 48 h at 80 C Flow 0.12% Xflow 0.07 After 30 min. at 120 C Flow 0.21% Xflow 0.09 Report both the flow and crossflow directions. 4.3 RECYCLING CODE ENGINEERING MATERIAL SPECIFICATIONWSS-M4D628-A2 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 4 of 4
