1、 ENGINEERING MATERIAL SPECIFICATION Material Name Specification Number Date Action Revisions 2008 07 29 A2 N-STATUS ESB-M4D385-A2 Replaced by WSK-M4D827-A C. Boese, FNA 1980 06 12 Released AL1-6000-35 Page 1 of 3 BS MOLDING COMPOUND - HIGH IMPACT NOT TO BE USED FOR NEW DESIGN ESB-M4D385-A2 INACTIVE
2、ESB-M4D385-B2 1. SCOPE: The material defined by this specification is a high impact acrylonitrile butadiene styrene (ABS) injection molding compound. 2. APPLICATION: This specification was released originally for material used in an instrument panel applique. 3. REQUIREMENTS: 3.1 INFRARED SPECTROPHO
3、TOMETRY AND/OR THERMAL ANALYSIS Ford Motor Company, at its option, may conduct infrared and/or thermal analysis of material/parts supplied to this specification. The curves established for initial approval shall constitute the reference standard and shall be kept on file at Central Laboratory. All s
4、amples shall produce curves that correspond to the reference standard when tested under the same conditions as those specified on the master curve. 3.2 PROPERTIES 3.2.1 Specific Gravity 1.01 - 1.12 (ASTM D 792) 3.2.2 Hardness, Rockwell “R“ 86 - 94 (ASTM D 785) 3.2.3 Tensile Strength, min 4500 psi (3
5、1.0 MPa) (ASTM D 638) 3.2.4 Elongation, min 30% (ASTM D 638) 3.2.5 Flexural Modulus, min 230 000 psi (1.6 GPa) (ASTM D 790) 3.2.6 Flexural Strength, min 7600 psi (53 MPa) (ASTM D 790) 3.2.7 Impact Strength, Izod, min (ASTM D 256) Notched 6.0 ft.lb/in (320 J/m) Unnotched (No Notch Either Side) 30 ft.
6、lb/in (1600 J/m) ENGINEERING MATERIAL SPECIFICATION ESB-M4D385-A2 ESB-M4D385-B2 Page 2 of 3 3.2.8 Deflection Temperature, min 85 C (ASTM D 648, 264 psi (1820 kPa) 3.3 ESB-M4D385-A2, FLAMMABILITY, max 4 in (101 mm)/min (FLTM BN 24-2, without the lot sampling plan) In addition, the test specimen shall
7、 not exhibit any flashing or sudden flaming on either surface in excess of the above maximum value. 3.4 ESB-M4D385-B2, FLAMMABILITY 3.4.1 In order to comply with Federal Motor Vehicle Safety Standard No. 302, the materials, portions of components, and composites shall not burn, or transmit a flame a
8、cross its surface, at a rate of more than 4 in (101 mm) per min. To demonstrate compliance, the sample size and method of testing shall be in accordance with FLTM BN 24-2. 3.4.2 All materials, portions of components, and composites defined by this specification that have not been treated, modified o
9、r reformulated and exceed a max burn rate of 3.0 in (76 mm) per min as specified by the Flammability Lot Sampling Plan of FLTM BN 24-2, must be evaluated for permanency of the materials flame retardant properties per ESB-M25P3-A according to the accelerated environmental aging requirements applicabl
10、e to the basic material category of this particular specification. Any material, portions of components, and composites defined by this specification that have been treated, modified or reformulated to conform to Flammability Lot Sampling Plan of FLTM BN 24-2, regardless of max burn rate, must be ev
11、aluated for both permanency of materials flame retardant properties and changes in mechanical, chemical and physical properties per ESB-M25P3-A applicable to the basic materials category of this particular specification. 3.4.3 Flammability Test Program Materials, portions of components, and composit
12、es governed by this specification must also comply with the requirements of ES-D3AB-11014-AA. 3.5 MOLDED PARTS Specific requirements for physical properties of molded parts, when required, shall be specified on engineering drawing, including color. 3.6 DECORABILITY When decorating is required on par
13、ts made of this material, they must be capable of accepting this decoration in accordance with the performance specification shown on the engineering drawing. ENGINEERING MATERIAL SPECIFICATION ESB-M4D385-A2 ESB-M4D385-B2 Page 3 of 3 3.7 SUPPLIERS RESPONSIBILITY Material supplied to this specificati
14、on must be equivalent to that originally approved. Changes in formulation or processing shall not be made without prior approval as described in Supplier Procedure I-A. 4. APPROVAL OF SUPPLIERS: Suppliers to this specification must be approved by the affected product engineering office. Procedure fo
15、r gaining approval of a specific material to a new/existing ES-M specification is contained in Supplier Procedure I-A. Approved new suppliers will be added to the Engineering Materials Approved Source List. 5. GENERAL INFORMATION: This information is for direction of the user and is not a requiremen
16、t for the supplier. 5.1 MOLD SHRINKAGE 0.007 - 0.009 in/in (mm/mm) (ASTM D 955) 5.2 COEFFICIENT OF LINEAR THERMAL EXPANSION 6.1 x 10-5/ F (ASTM D 696) (11.0 x 10-5/ C) 5.3 REGRIND For optimum part performance and retention of impact properties a maximum of 20% clean, nondegraded regrind is acceptable.
