1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2009 11 19 N-STATUS Replaced by WSB-M4D732-A3 J. Crist, NA 2007 05 31 Revised Inserted 3.0; Deleted 3.2.3, 3.3 & 4 1971 10 08 Released AB1-478 Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 1 of 2 POLYPROPYL
2、ENE, GLASS REINFORCED - GLASS TO POLYMER ESB-M4D338-A CHEMICALLY LINKED-INJECTION MOLDING COMPOUND NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a glass fiber reinforced polypropylene in which the glass fiber reinforcement is chemically bonded to the polypropyl
3、ene homopolymer, thereby enhancing the strength properties (tensile and flexural). 2. APPLICATION This specification was released originally for material used in structural or semi-structural applications, such as fender aprons where high mechanical properties are required. 3. REQUIREMENTS 3.0 STAND
4、ARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.1 MOLDED TEST SPECIMEN (Black color, injection molded samples, tested at 23 +/- 2 C) Type I Type II 3.1.1 Glass Fiber Conten
5、t, % by weight 18 - 22 28 - 32 (Burned 1 h at 649 C) 3.1.2 Specific Gravity, min 1.00 - 1.06 1.10 - 1.15 (ASTM D 792) 3.1.3 Tensile Strength, psi (MPa), min 7,800 (54) 9,000 (62) (ASTM D 638) 3.1.4 Elongation, % min 2.0 1.8 (ASTM D 638) 3.1.5 Flexural Strength, psi (MPa), min 11,000 (76) 10,000 (69)
6、 (ASTM D 790) 3.1.6 Flexural Modulus, psi (GPa), min 450,000 (3.2) 600,000 (4.2) (ASTM D 790) ENGINEERING MATERIAL SPECIFICATIONESB-M4D338-APrinted copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 2 of 2 Type I Type II 3.1.7 Impact Strength, Izod, ft-lb/in (J/m), min (ASTM
7、D 256, 1/8 in (3.2 mm) specimen width) Notched 0.9 (48) 1.0 (54) Unnotched 6.5 (347) 6.5 (347) 3.1.8 Deflection Temperature, C min (ASTM D 648) At 66 psi (455 kPa) 149 152 At 264 psi (1820 kPa) 135 135 3.1.9 Hardness - Rockwell “R“ 102 - 106 106 - 112 (ASTM D 785) 3.1.10 Water Absorption, 0.05 0.05
8、 by weight, max (ASTM D 570, 24 h immersion) 3.2 MOLDED PART 3.2.1 Color Natural or as specified on engineering drawing 3.2.2 Flammability, max 4 in (101 mm)/min (FLTM BN 24-2, without the lot sampling plan) In addition, the test specimen shall not exhibit any flashing or sudden flaming on either s
9、urface in excess of the above maximum value. 3.2.4 Physical Properties Specific requirements 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 MOLD SHRINKAGE 0.006 - 0.007 in/in (At 0.125 in (3.2 mm) wall thickness) (mm/mm) 5.2 COEFFICIENT OF LINEAR THERMAL EXPANSION 5.2.1 Type I 3.5 x 10-5/ F (6.3 x 10-5/ C) 5.2.2 Type II 2.4 x 10-5/ F (4.3 x 10-5/ C)
