1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 02 15 N-STATUS No replacement named S. Ryzyi, NA 2003 09 12 Revised Para 3.0 inserted; para 3.1, 3.6 and 4 deleted 1986 05 29 AR1-6000-182 Released Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, Inc. Page 1 of 3
2、 ALUMINUM, EXTRUSION AND SHEET ALLOY ESB-M2A125-A (SAE AA 7129-T6) NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification can be either an extruded or sheet product, heat treatable aluminum alloy, SAE AA 7129. 2. APPLICATION This specification was released originally for c
3、hrome plated aluminum bumpers and bumper reinforcements. CONTROL ITEM - AFFECTS GOVERNMENT REGULATION COMPLIANCE OR CRITICAL VEHICLE FUNCTION AND MUST COMPLY WITH APPLICABLE REQUIREMENTS OF FORD Q-101 OR MANUFACTURING PRACTICE 102 - AREAS MARKED ARE CONTROL ITEM CHARACTERISTICS - CHANGE IN DESIGN, C
4、OMPOSITION OR PROCESSING FROM THE PART PREVIOUSLY APPROVED FOR PRODUCTION REQUIRES PRIOR PRODUCT ENGINEERING APPROVAL. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials
5、WSS-M99P1111-A). 3.2 CHEMICAL COMPOSITION The determination of chemical composition can be made in accordance with chemical (Method ASTM E 34), spectrochemical (Methods ASTM E 101, E 227 or E 607) or x-ray fluorescence. In case of dispute, the umpire method shall be ASTM E 34. 3.2.1 Chemical Compos
6、ition Silicon 0.15 max Iron 0.30 max Copper 0.50 - 0.9 Manganese 0.10 max Magnesium 1.3 - 2.0 Zinc 4.2 - 5.2 Chromium 0.10 max Gallium 0.03 max Vanadium 0.05 max Titanium 0.05 max Aluminum Remainder Other Each 0.05 max Total Others 0.10 max ENGINEERING MATERIAL SPECIFICATION ESB-M2A125-A Printed cop
7、ies are uncontrolled Copyright 2010, Ford Global Technologies, Inc. Page 2 of 3 3.3 MECHANICAL PROPERTIES, T6 TEMPER (ASTM B 557) 3.3.1 Yield Strength, min 340 MPa (0.2% offset) 3.3.2 Tensile Strength, min 380 MPa 3.3.3 Elongation in 50 mm, min 9% 3.3.4 Fracture Properties Conformance to this requir
8、ement shall be demonstrated by testing to one of the following test methods, para 3.3.4.1 or 3.3.4.2. 3.3.4.1 Reduction of Area, min 20% (ASTM B 557) 3.3.4.2 Fracture Toughness Index For the purpose of this specification “Fracture Toughness Index“ shall be defined as the difference between the yield
9、 strength and the fracture strength (yield strength-fracture strength), where fracture strength is the instantaneous load of failure divided by the original cross sectional area. 3.3.4.2.1 Initial Material Approval - 1090 kPa 3.4 HEAT TREAT PROCESS - “T6“ TEMPER Note: Parts are to be processed indiv
10、idually, and not banded together. . Solution heat treat 454 - 499 C (482 - 491 C preferred) for 10 to 15 min at temperature. . Water quench from the solution heat treat temperature. Metal temperature to be above 399 C when entering the quench. . Form part within 4 h after solution heat treat. Artifi
11、cial Age: . 1st step 99 +/- 5 C for 5 h at temperature. . 2nd step 163 +/- 5 C for 5 h at temperature. All temperatures are metal temperature, not furnace temperature. 3.5 PLATING This material shall be capable of conforming to the requirements of ESB-M1P73 for the electrodeposition of copper, nicke
12、l and chromium. ENGINEERING MATERIAL SPECIFICATION ESB-M2A125-A Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, Inc. Page 3 of 3 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 TYPICAL MECHANICAL PROPERTIES T6 Temper 5.1.1 Yield Strength 380 MPa 5.1.2 Tensile Strength 420 MPa 5.1.3 Elongation 15% 5.2 FURNACE ATMOSPHERE A reducing atmosphere should be provided during the solution heat treating to minimize the formation of surface oxides.
