1、 ENGINEERING MATERIAL SPECIFICATION Material Name Specification Number Date Action Revisions 2010 06 11 N-STATUS No replacement named A. Pan, APA 2000 10 26 Revised Updated A. Cockman 1988 07 14 SM/EQ5376 TP Released P. Kuntze Printed copies are uncontrolled Page 1 of 6 Copyright 2010, Ford Global T
2、echnologies, Inc. POLYBUTYLENE TEREPHTHALATE (PBT) 30 % GLASS WSK-M4D607-A FIBRE REINFORCED IMPACT MODIFIED MOLDING COMPOUND NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a 30 % glass fiber reinforced and impact modified thermoplastic polyester molding compound
3、 with an improved heat ageing performance based on polybutylene terephthalate (PBT). 2. APPLICATION This specification was released originally for material used for small electrical parts and connectors. 3. REQUIREMENTS Material specification requirements are to be used for initial qualification of
4、materials. 3.1 QUALITY SYSTEM REQUIREMENTS Material suppliers and part producers must conform to the Companys Quality System Requirements. 3.2 INFRARED SPECTROPHOTOMETRY AND/OR THERMAL ANALYSIS IR spectra and thermograms established for initial approval shall constitute the reference standard and sh
5、all be kept on file at the designated material laboratory. All samples shall produce IR spectra and thermograms that correspond to the reference standard when tested under the same conditions. 3.3 CONDITIONING AND TEST CONDITIONS All test values indicated herein are based on material conditioned in
6、a controlled atmosphere of 23 +/- 2 C and 50 +/- 5 % relative humidity for not less than 24 h prior to testing and tested under the same conditions unless otherwise specified. ENGINEERING MATERIAL SPECIFICATION WSK-M4D607-A Page 2 of 6 Copyright 2000, Ford Global Technologies, Inc. 3.4 MOLDING COMPO
7、UND 3.4.1 Glass Fiber Content 28 - 31 % (ISO 3451/2, at 650 +/- 25 C, test portion 1.0 g) 3.4.2 Melt Flow Rate 1 - 4 g/10 minutes (ISO 1133/ASTM D 1238, 250 +/- 0.5 C, 2.16 kg) The material shall be dried for 4 h minimum at 130 - 135 C in a mechanical convection oven immediately preceding the test.
8、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-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 Specim
9、ens 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 1.43 - 1.47 g/cm3(ISO 1183, Method A/ASTM D 792, Method A1) 3.5.3 Tensile Strength at Max Load, min 90 MPa (ISO
10、R 527/ASTM D 638M, 150 min x 10 x 4.0 +/- 0.2 mm specimen, 5 mm/minute test speed) 3.5.4 Flexural Modulus, min 5.9 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 Modulus at 23 C 1.07 - 1.60 GPa (ASTM D 4065, forced constant amplitu
11、de, 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.) ENGINEERING MATERIAL SPECIFICATION WSK-M4D607-A Page 3 of 6 Copyright 2000, Ford Global Technologies, Inc. Additionally, a Shear Modulus vs. Temperature curve sh
12、all be plotted for - 50 to + 220 C temperature range, at 5 C minimum intervals. The plotted curve must be within tolerance range shown on page 6. 3.5.6 Impact Strength, Izod (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
13、, min 11 kJ/m2 3.5.6.2 At - 40 +/- 1 C, min 9 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 possible, test can be conducted outside, but within 5 s. 3.5.7 Heat
14、Deflection Temperature, min 195 C (ISO 75/ASTM D 648, 120 x 10 x 4.0 +/-0.2 mm specimen, at 1.82 MPa) 3.5.8 Heat Aging Performance (ISO 188/ASTM D 573, 1000 h at 160 +/- 2 C. Unaged property values shall be determined at the time of the aged properties determination) 3.5.8.1 Tensile Strength Change
15、+/- 15 % (Test Method per para 3.5.3) 3.5.8.2 Impact Strength, Izod Change +/- 25 % (Test Method per para 3.5.6.1, specimens to be notched before heat ageing) 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 +/- 0.1 mm with
16、 a smooth surface. 3.7 ELECTRICAL PROPERTIES 3.7.1 Dielectric Strength, min (IEC 243/ASTM D 149, in insulating oil/liquid, 3.2 +/- 0.2 mm thick specimen) ENGINEERING MATERIAL SPECIFICATION WSK-M4D607-A Page 4 of 6 Copyright 2000, Ford Global Technologies, Inc. 3.7.1.1 Short Time 26 kV/mm 3.7.1.2 Ste
17、p by Step tbd kV/mm (5 - 10 kV starting voltage, 20 s steps) 3.7.2 Electrical Resistivity tbd (IEC 93/ASTM D 257) 3.8 ADDITIONAL REQUIREMENTS Specific requirements for material and/or manufactured parts shall be specified on the Engineering drawing, Engineering parts specification and/or performance
18、 specifications. All critical areas with respect to these properties shall be clearly designated on the Engineering drawing. 3.9 SUPPLIERS RESPONSIBILITY All materials supplied to this specification must be equivalent in all characteristics to the material upon which approval was originally granted.
19、 Prior to making any changes to the material originally approved under this specification, whether or not such changes affect the materials ability to meet the specification requirements, the Supplier shall notify the affected Purchasing, and Materials Engineering activities (with reasons) of the pr
20、oposed changes. Upon notification of the Company, further instructions will be provided. Note: Suppliers should be prepared to provide test data and samples demonstrating compliance to this specification, if requested. Substance restrictions imposed by regulations or Company direction applies to the
21、 materials addressed by this document. The restrictions are identified in Restricted Substance Management Standard WSS-M99P9999-A1. 4. APPROVAL OF MATERIALS Materials defined by this specification for direct supply to the Company must have prior approval. Certain materials subcontracted by part supp
22、liers may also require prior approval. These include materials critical to the Companys business for regulatory, safety, environmental or compatibility requirements or contractual agreements. Suppliers desiring approval of their materials shall first obtain an expression of interest from Purchasing,
23、 Design or Materials Engineering activity. Upon request, the Supplier shall submit a completed copy of their laboratory test reports, signed by a qualified and authorized representative of the test facility, demonstrating full compliance with all the requirements of this specification. ENGINEERING M
24、ATERIAL SPECIFICATION WSK-M4D607-A Page 5 of 6 Copyright 2000, Ford Global Technologies, Inc. 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 2 - 3E-5/ C (AS
25、TM D 696) 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 0.25 - 0.35 % 5.2.2 Post Shrinkage (Separate specimens required for each test) After 48 h at 80 C 0.25 - 0.35 % After 30 minutes at 120 C 0.30 - 0.40
26、 % 5.3 MELTING POINT 224 C (ISO 1218, Method B/ASTM D 789) 5.4 MELT VOLUME RATE 0.8 - 3.0 cm3/ (ISO 1133/ASTM D 1238, except 250 +/- 0.5 C, 10 minutes 2.16 kg load, extrudate volume in cm3/10 minutes) The material shall be dried for 4 h minimum at 130 - 135 C in a mechanical convection oven immediately preceding the test. ENGINEERING MATERIAL SPECIFICATION WSK-M4D607-A Page 6 of 6 Copyright 2000, Ford Global Technologies, Inc.
