1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2009 11 19 N-STATUS No known use. No replacement named B. Curtiss, NA 2003 09 11 Revised Para 3.0 inserted; para 3.3 and 4 deleted 1963 08 20 Released. F6-1181 Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, Inc. Page
2、 1 of 2 ALUMINUM ALLOYS, BRAKE PISTON ESA-M2A62-A NOT TO BE USED FOR NEW DESIGN 1. SCOPE The materials defined by this specification are optional aluminum alloys and product forms for parts requiring the basic properties of aluminum. 2. APPLICATION This specification was released originally for mate
3、rial used in the manufacture of pistons for automotive brake, wheel and master cylinders. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.1 CHEMICA
4、L COMPOSITION AND TEMPER 3.1.1 Permanent Mold Castings 3.1.1.1 SAE 300-T5 Aluminum Alloy 3.1.1.2 Optional Composition (T4 Temper) Copper 5.0 - 7.0 Silicon 5.5 - 7.5 Iron 2.0 max Zinc 2.5 maxMagnesium 0.4 max Total All Others 0.75 maxAluminum Balance 3.1.2 Continuous Cast Bar 3.1.2.1 SAE 380-T4 Alumi
5、num Alloy ENGINEERING MATERIAL SPECIFICATIONESA-M2A62-A Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, Inc. Page 2 of 2 3.1.2.2 Optional Composition (T4 Temper) Copper 3.5 - 5.5 Silicon 1.3 - 3.0 Iron 1.7 max Zinc 0.75 maxMagnesium 0.3 max Titanium 0.5 maxNickel 0.5 max Le
6、ad 0.7 maxTotal All Others 1.0 max Aluminum Balance 3.1.3 Forged or Impact Extruded Pistons 3.1.3.1 AA 6151-T6 Aluminum Alloy 3.1.4 Optional Materials for Pistons Manufactured From Bar Stock 3.1.4.1 AA 2017-T4 Aluminum Alloy 3.1.4.2 AA 2024-T4 Aluminum Alloy 3.1.4.3 AA 2011-T3 Aluminum Alloy 3.2 QUALITY Pistons made from any of these materials shall be sound, non-porous.
