1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev 03 2011 03 01 N-Status No replacement named A Pan, APA 2005 01 25 Revised Inserted 3.0; Deleted 3.1, 3.4, 3.5, 3.6 & 4 1969 08 11 Released AZ1-266 ESB-M4D299-A & B Printed copies are uncontrolled Copyright 2011, Ford Global Technologies,
2、LLC Page 1 of 2 POLYPROPYLENE, GLASS FIBER REINFORCED ESB-M4D299-A INJECTION MOLDING COMPOUND - NATURAL NOT TO BE USED FOR NEW DESIGN 1. SCOPE The materials defined by this specification are heat stabilized polypropylene molding compounds reinforced with various percentages of glass fibers. 2. APPLI
3、CATION This specification was released originally for materials used to form parts such as molding retainer clips, quarter window latches, tail lamp bodies and other parts requiring a high strength, heat resistant material. 3. REQUIREMENTS Natural and pigmented injection molded samples 3.0 STANDARD
4、REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.2 MOLDED TEST SPECIMEN Type I Type II Type III 3.2.1 Glass Fiber Content, 8 - 12 18 - 22 28 - 32 % by weight (Burned 1 h at 649
5、C) 3.2.2 Specific Gravity, min 0.95 1.00 1.10 (ASTM D 792) 3.2.3 Tensile Strength, MPa, min 42.1 43.5 45.5 (ASTM D 638, Speed “B“) 3.2.3.1 Heat Stabilized, MPa, min 42.1 43.5 45.5 (ASTM D 638, 5 mm/min test speed) Test Method: Suspend 5 tensile bars in a mechanical convection oven maintained at 155
6、/- 3 C for 1000 h. Samples are then removed from the oven and conditioned at 23 +/- 2 C for 24 h prior to testing. This test is required for initial sample approval only. 3.2.4 Flexural Strength, MPa, min 53 55 62 (ASTM D 790, 5 mm/min, 6.4 x 12.7 mm sample) ENGINEERING MATERIAL SPECIFICATION ESB-M
7、4D299-A Printed copies are uncontrolled Copyright 2011, Ford Global Technologies, LLC Page 2 of 2 3.2.5 Flexural Modulus, GPa, min 2.2 3.5 4.0 (ASTM D 790, 5 mm/min, 6.4 x 12.7 mm sample) 3.2.6 Impact Strength, Izod, J/m, min (ASTM D 256, 6.4 mm sample width) 3.2.6.1 Notched Natural 32 43 54 3.2.6.2
8、 Unnotched 240 187 120 3.2.7 Deflection Temperature, C min (ASTM D 648, 6.4 sample width) 455 kPa 138 143 149 1820 kPa 124 129 135 3.2.8 Hardness - Rockwell M, min 20 30 40 (ASTM D 785) 3.3 MOLDED PARTS 3.3.1 Color Natural or as specified on engineering drawing 3.3.2 Physical Properties Specific req
9、uirements for physical properties of molded parts, when required, shall be specified on the engineering drawing. 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 IMPACT STRENGTH These materials shou
10、ld not be used in applications which require good impact strength at room temperature as well as at low temperature because of poor Gardner impact test results (less than 0.23 J). 5.2 COEFFICIENT OF LINEAR THERMAL EXPANSION (ASTM D 696) Type I 5.2 - 6.5 x 10-05/C Type II 3.1 - 4.5 x 10-05/C Type III 2.7 - 4.0 x 10-05/C 5.3 MOLD SHRINKAGE (ASTM D 955) Type I 0.005 mm/mm Type II 0.004 mm/mm type III 0.004 mm/mm
