1、 ENGINEERING MATERIAL SPECIFICATION Material Name Specification Number Date Action Revisions 2009 07 28 N-STATUS No Replacement Named Y. Bankowski, NA 1978 07 13 Metricated, Renumbered and Retyped CF1H-RD56716824 1963 10 11 Released F6-1138 Page 1 of 2 ACETAL RESIN, TFE FIBER FILLED ESF-M4D169-A NOT
2、 TO BE USED FOR NEW DESIGN 1. SCOPE: The material defined by this specification is a TFE fiber filled acetal resin. 2. APPLICATION: This specification was released originally for material used where low frictional characteristics are required such as the bearing for the speedometer roll. 3. REQUIREM
3、ENTS: 3.1 MOLDED TEST SPECIMENS 3.1.1 Specific Gravity 1.51 - 1.57 (ASTM D 792) 3.1.2 Tensile Strength, min 6000 psi (41.4 MPa) (ASTM D 638, Speed “B“) 3.1.3 Deflection Temperature, min (ASTM D 648, 1/2 x 1/4 in (12.7 x 6.4 mm) specimen) At 66 psi (455 kPa) 163 C At 264 psi (1820 kPa) 93 C 3.1.4 Mel
4、ting Point 171 - 182 C (ASTM D 2133) 3.1.5 Elongation at Break, min 7% (ASTM D 638, Speed “B“) 3.1.6 Tensile Modulus, min 3.3 x 105 psi (2.3 GPa) (ASTM D 638, Speed “B“) 3.2 MOLDED PARTS 3.2.1 Infrared Spectrophotometry Ford Motor Company, at its option, may conduct infrared analysis of material/par
5、ts 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 samples shall produce curves that correspond to the reference standard when tested under the same conditions as those specified
6、on the master curve. ENGINEERING MATERIAL SPECIFICATION ESF-M4D169-A Page 2 of 2 3.2.2 Specific Gravity 1.51 - 1.57 (ASTM D 792) 3.2.3 Melting Point 171 - 182 C (ASTM D 2133) 3.3 SUPPLIERS RESPONSIBILITY Material supplied to this specification must be equivalent to that originally approved. Changes
7、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 for 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 data is for information only and is not a requirement. 5.1 IMPACT STRENGTH 0.6 ft lb/in (32 J/m) (ASTM D 256, notched)
