1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 06 11 N-STATUS No replacement named A. Pan, APA 2005 09 09 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.7, 3.8 & 4 1991 02 27 Released NB00 10043054069 M.A. Myers Printed copies are uncontrolled Copyright 2010, Ford Global Technologies,
2、 LLC Page 1 of 4 POLYBUTYLENE TEREPHTHALATE (PBT), HIGH IMPACT, WSB-M4D582-A 40% MINERAL/GLASS FIBER REINFORCED MOLDING COMPOUND NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a high impact, 40% mineral/glass fiber reinforced thermoplastic polyester molding comp
3、ound based on polybutylene terephthalate (PBT). 2. APPLICATION This specification was released originally for material used for exterior painted grilles. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Req
4、uirements For Production Materials (WSS-M99P1111-A). 3.4 MOLDING COMPOUND 3.4.1 Melt Flow Rate 10 - 14 g/ (ISO 1133/ASTM D 1238, 250 C, 2.16 kg) 10 minutes 3.4.2 Filler Content 38 - 42% (ISO 3451/2, 1 h at 650 +/- 25 C) 3.5 MOLDED TEST SPECIMEN 3.5.1 Preparation of Test Specimens Unless otherwise sp
5、ecified 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 the center portion of the test spe
6、cimen A and/or B. The specimens shall be prepared according to ISO 294. No annealing allowed. 3.5.2 Density 1.49 - 1.59 g/cm (ISO 1183, Method A/ASTM D 792, Method A1) 3.5.3 Tensile Strength at Max Load, min 66 MPa (ISO R 527/ASTM D 638M, 150 min x 10 x 4.0 +/- 0.2 mm specimen, 5 mm/min) ENGINEERING
7、 MATERIAL SPECIFICATIONWSB-M4D582-A Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 2 of 4 3.5.4 Flexural Modulus, min 6.5 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 1.18 - 1.9
8、6 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. Specimen length between clamps 35-40 mm. Soak time at each temperature interval - 3 minutes minimum) Additionally, a She
9、ar Modulus vs. Temperature curve shall be plotted for -50 to +160 C temperature range, at 5 C minimum intervals. The plotted curve must be within tolerance range shown on page 4. 3.5.6 Impact Strength, Izod, min (ISO 180, Method A/ASTM D 256, Method A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 10 specimens
10、 for each test) 3.5.6.1 At 23 +/- 2 C 7 kJ/m 3.5.6.2 At -40 +/- 2 C 4 kJ/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
11、 within 5 s. 3.5.7 Heat Deflection Temperature, min 150 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, 150 +/- 50 air changes/h, 1000 h at 140 +/- 2C. After heat aging test specimens are to be conditioned in a desiccator for 3
12、 - 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 Change +/- 15% (Test Method per para 3.5.3) 3.5.8.2 Impact Strength, Izod Change +/- 15% (Test Method per para 3.5.6.1, specimens to be notched before heat agin
13、g) ENGINEERING MATERIAL SPECIFICATIONWSB-M4D582-A Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 3 of 4 3.6 FLAMMABILITY (ISO 3795) Burn Rate, max 100 mm/minute The specimen size required for material approval is 355 x 100 x 1.25 +/- 0.1 mm with a smooth surface.
14、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 2.5-5/ C (ASTM D 696) 5.2 MOLD SHRINKAGE (ISO 2577, approx. 150 x 100 x 3.2 +/- 0.2 mm injection molded speci
15、men) 5.2.1 Molding Shrinkage . After 48 h at 23 +/- 2 C 0.2 - 1.0% 5.2.2 Post Shrinkage (Separate specimens required for each test) . After 48 h at 80 C 0.2 - 1.0% . After 30 min at 120 C 0.2 - 1.0% 5.3 ELONGATION AT BREAK 2.0% (Test Method according to para 5.3.3) ENGINEERING MATERIAL SPECIFICATIONWSB-M4D582-A Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 4 of 4
