1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 01 08 N-STATUS No replacement named J. Crist, NA 2005 07 22 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.7, 3.8 Fixed numbering 3.5.8 1988 03 11 Released CDS1-DR191290 Printed copies are uncontrolled Copyright 2010, Ford Global Technolo
2、gies, LLC Page 1 of 4 POLYARYLATE (PAR) MOLDING COMPOUND, HIGH HEAT ESB-M4D576-A RESISTANT NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is an aromatic thermoplastic polyester molding compound produced by copolymerization of phthalic acids with polycarbonate. This
3、 material is characterized by high strength, moisture resistance and high heat resistance, and is naturally transparent. 2. APPLICATION This specification was released originally for material used in low profile aerodynamic headlamp housings. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION
4、MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.4 MOLDING COMPOUND 3.4.1 Melt Flow Rate See Approved (ISO 1133/ASTM D 1238, except test Source List (ASL) conditions as specified in ASL) 3.5 MOLDED TEST SP
5、ECIMEN 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 specimens shall be prepared according to ISO 294. No annealing allowed. 3.5.2 Density 1.18 - 1.24 g/cm3(ISO R 1183, Method A/ASTM D 792, Method A
6、1) 3.5.3 Tensile Strength at Yield, min 62 MPa (ISO R 527/ASTM D 638, 165 x 13 x 3.2 +/- 0.2 mm (Type 1) specimen, 50 mm/min test speed) 3.5.3.1 Elongation at Break, min 20% (Test Method according to para 3.5.3) ENGINEERING MATERIAL SPECIFICATIONESB-M4D576-A Printed copies are uncontrolled Copyright
7、 2010, Ford Global Technologies, LLC Page 2 of 4 3.5.4 Flexural Modulus, min 1.7 GPa (ISO 178/ASTM D 790 - Method I, Procedure A, 130 x 13 x 3.2 +/- 0.2 mm specimen, 50 mm support span) 3.5.5 Shear Modulus at 23 C 787 - 963 MPa (ASTM D 4065, forced constant amplitude, fixed frequency of 1 Hz +/- 15%
8、, strain level below 1%. Specimen cut from the center of tensile specimen) Additionally, a Shear Modulus vs. Temperature curve shall be plotted for -50 to +150 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
9、, min (ISO 180, Method A/ASTM D 256, Method A, 63.5 x 13 x 3.2 +/- 0.2 mm specimen, 10 specimens for each test) 3.5.6.1 At 23 +/- 2 C 80 J/m 3.5.6.2 At -40 +/- 2 C TBD J/m The test specimens must be conditioned for minimum of 6 h at the above specified temperature prior to impact test. Low temperatu
10、re testing shall be done within the cold box. If not possible, test can be conducted outside, but within 5 s. 3.5.7 Heat Deflection Temperature, min (ISO 75/ASTM D 648, 130 x 13 x 3.2 +/- 0.2 mm specimen) 3.5.7.1 At 1.82 Mpa 150 C 3.5.7.2 At 0.45 Mpa 165 C 3.5.8 Heat Aging Performance (ISO 188/ASTM
11、D 573, 1000 h at TBD +/- 2 C) 3.5.8.1 Tensile Strength Change +/- 15% (Test Method per para 3.5.3) 3.5.8.2 Elongation at Break Change +/- 15% (Test Method per para 3.5.3) 3.5.8.3 Impact Strength, Izod Change +/- 15% (Test Method per para 3.5.6.1, specimens to be notched before heat aging. 3.6 FLAMMA
12、BILITY (ISO 3795) Burn Rate, max 0 mm/min (SE) The specimen size required for material approval is 355 x 100 x 3.2 +/- 0.1 mm with a smooth surface. ENGINEERING MATERIAL SPECIFICATIONESB-M4D576-A Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 3 of 4 5. GENERAL INF
13、ORMATION The information given below is provided for assistance and clarification in meeting the requirements of this specification. 5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION 5.0 - 8.1-5/ C (ASTM D 696) 5.2 MOLD SHRINKAGE (ISO 2577, approx. 150 x 100 x 3.2 +/- 0.2 mm injection molded specimen) 5.2
14、.1 Molding Shrinkage . After 48 h at 23 +/- 2 C 0.8 - 1.0% 5.2.2 Post Shrinkage (Separate specimens required for each test) . After 48 h at 80 C TBD % . After 30 min at 120 C TBDENGINEERING MATERIAL SPECIFICATIONESB-M4D576-A Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 4 of 4 SHEAR MODULUS vs. TEMPERATURE CURVE TO BE ESTABLISHED (TBE)
