1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 02 15 N-STATUS No replacement named S. Ryzyi, NA 2005 01 19 Revised Inserted 3.0; Deleted 3.9, 4 1980 06 12 Released AL1-6000-35 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 1 of 3 ALUMINUM-FORMABLE,
2、SHEET ALLOY ESB-M2A113-B NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a formable, heat treatable aluminum sheet alloy (SAE AA X7021). 2. APPLICATION This specification was released originally for material used as bumper reinforcements. CONTROL ITEM - AFFECTS G
3、OVERNMENT 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, COMPOSITION OR PROCESSING FROM THE PART PREVIOUSLY APPROVED FOR PRODUCTION REQU
4、IRES 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 (WSS-M99P1111-A). 3.1 CHEMICAL COMPOSITION (ASTM E 34) Silicon 0.25 max Iron 0
5、.40 max Copper 0.25 max Manganese 0.10 max Magnesium 1.2 - 1.8 Chromium 0.05 max Zinc 5.0 - 6.0 Titanium 0.10 max Zirconium 0.08 - 0.18 Others, Each 0.05 Others, Total 0.15 Aluminum Balance 3.2 MECHANICAL PROPERTIES, “O“ TEMPER (ASTM E 8) Elongation, min 12% ENGINEERING MATERIAL SPECIFICATION ESB-M2
6、A113-B Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 2 of 3 3.3 MECHANICAL PROPERTIES (After heat treating per paragraph 3.5) (ASTM E 8) Yield Strength, min 50,000 psi (345 MPa) Tensile Strength, min 57,000 psi (393 MPa) Elongation, min 8% 3.4 BEND TEST, TRANSVER
7、SE 2T (ASTM E 290) Test samples in the as received condition prior to solution heat treatment, shall pass a 90 bend test at room temperature with the minimum inside bend radius on sheet stock under 0.180 in (4.6 mm) thickness not to exceed the above limits. (T denotes sample thickness.) Note: Somewh
8、at more liberal radii may be required during fabrication of parts. 3.5 HEAT TREAT PROCESS T61 TEMPER As a final operation, all parts must be heat treated using the following sequence: Solution heat treat for 5-10 min at 400 to 470 C. Force air quench to approximately 90 C at a min rate of 3.3 C/s ov
9、er the range 385-200 C. Incubate at room temperature for 8 h min Artificially age as follows: a) Start at room temperature. b) Heat at 55 C/h max between both room temperature incubation step and first step age (c) and between first step age and second step age (d). c) First step: Soak 2 h at 120 +/
10、- 5 C d) Second step: Soak 4 h at 160 +/- 5 C. Note: All temperatures shown above are metal temperature. 3.6 EXCO (ASTM G 34) Master samples of aluminum exhibiting worst case Exco ratings of “EB“ and “EC“ are on file at the BEPE Materials Engineering Office. In case of dispute between standard refer
11、ence photographs shown on ASTM G 34 and the master samples, the master samples shall govern. Duplicate pairs of master samples are available from BEPE Materials Engineering upon written request from suppliers currently producing parts or material to this specification. Note: The chemistry and heat t
12、reatment of this alloy is critical to the Exco test performance. Therefore, both aluminum supplier and heat treater must be approved to qualify as sources to this specification. Qualified aluminum sources and heat treaters will be shown on the corporate approved source sheet. ENGINEERING MATERIAL SP
13、ECIFICATION ESB-M2A113-B Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 3 of 3 TABLE I EXCO RATING % PRODUCTION N, P, EA or EB 90% min EC 10% max ED None 3.6.1 Aluminum Supplier Exco testing of aluminum heat treated to the T61 Temper (per Section 3.5) shall be per
14、formed on periodic basis to establish a statistical confidence that the requirements, listed in Table I, are being maintained. The Exco test is not normally a raw material release requirement. 3.6.2 Component Heat Treater - Exco Three coupons, each 2x3 in (50x75 mm), from the same lot of aluminum us
15、ed for the production components are to be tested for each production lot. A production lot represents one heat in an artificial aging oven. The coupons shall be processed through the complete T61 heat treat cycle per paragraph 3.5 along with the production parts. The three test coupons shall be cyc
16、led through the solution heat treat oven to best represent the thermal treatment of production parts. The coupons are to be room temperature aged, then placed in the artificial aging ovens with one coupon at each of the following established locations: (1) lowest temperature area (2) highest tempera
17、ture area (3) typical or mean temperature area. The three coupons are to be Exco tested (ASTM G 34) and statistical confidence established daily that the requirements of Table I are being maintained. 3.7 MANUFACTURING All forming, fabrication and welding of parts must be completed in the “O“ temper
18、prior to heat treating parts to the “T61“ temper. 3.8 MICROSTRUCTURE The microstructure after proper heat treatment to the T61 temper shall be predominantly unrecrystallized. No continuous network of recrystallized grains is permitted through the thickness of the sheet. This does not apply to heat a
19、ffected weld zones. 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 WELDABILITY The following processes can be used to weld the material approved to this specification: GMAW (MIG), GTAW (TIG) and c
20、overed electrode stick welding. A decrease in both mechanical properties and corrosion resistance may occur in weld heat affected zones because of recrystallization. Note: The Welding Development Department of the Manufacturing Processes Laboratory should be consulted for appropriate welding schedules.
