DAIMLERCHRYSLER CORPORATION

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1 DAIMLERCHRYSLER CORPORATION No: MS-8580 Material Standard Date Published: Category Code: C-3 Change: G EASL Req.: No RESTRICTED: No WROUGHT ALUMINUM AND ALUMINUM ALLOYS 1.0 GENERAL 1.1 Purpose This standard covers specific wrought aluminum and aluminum alloys, both heat treatable and non-heat treatable, and their commercially available tempers. 1.2 Purpose of the Material The purpose of the material is for use in various applications. 1.3 Coverage of this Standard This standard covers the material designation for engineering drawings correlating alloy, temper, product forms and requirements such as chemical composition, physical and mechanical properties. Specific requirements are derived from literature published by internationally recognized sources. 1.4 DaimlerChrysler Materials Designation The Unified Numbering System (UNS) established jointly between the ASTM and SAE, reference ASTM DS 56 and SAE HSJ 1086, has identified the A9XXXX number series for the designation of wrought aluminum and aluminum alloys. To specify a wrought aluminum material, the DaimlerChrysler Material Standard Number MS-8580 will be followed by the appropriate UNS number code (A9XXXX) and, if it is an engineering requirement, there will be a temper designation as defined in Section 1.5. The basic form is MS A9XXXX-XXX. Typical examples are shown in Table 1. TABLE 1: EXAMPLES OF MATERIAL DESIGNATIONS Non-Heat Treatable Alloys i.e. MS A H34 or i.e. MS A H26 Heat Treatable Alloys i.e. MS A T6 i.e. MS A T Correlation to Other Standards The UNS system provides a means of correlating a description of the alloy with the chemical composition and cross reference standards such as the American Society for Testing and Materials (ASTM), Society of Automotive Engineers (SAE), the Aluminum Association (AA), and the American National Standard (ANSI). Tables 2 and 3 correlate the previously active Material Standard (MS) number and change letter with the above new Chrysler UNS designation as referenced in Section 1.4 above. Note, other materials not included in Tables 2 and 3 may be specified by using the format explained in paragraph 1.4 above. MS-8580, Change G, , Page 1

2 TABLE 2: WROUGHT ALLOYS NON-HEAT TREATABLE Previous Chrysler Number MS Change Letter UNS Code 1742 M A91100 A91200 A J A D A A C A B A95056 (Core), A96253 (Clad) 3409 B A A A A E A B A D A A C A97072 (Opt.), A98007 (Opt.) 3854 A A B A C A A A A A B A C A D A E A95056 N/A A95454 MS-8580, Change G, , Page 2

3 TABLE 3: WROUGHT ALLOYS HEAT TREATABLE Previous Chrysler Number MS Change Letter UNS Code 1746 F A A G A B G A97075 (Core), A97072 (Clad) 2427 A I A B A A G A B A92024 (Core), A91230(Clad) 2803 G A A C A B A96463M (1) 5928 A A B A97021, A97029 N/A A97129 NOTE 1: Iron Content % Maximum Revised to include two of the three alloys shown in MS-6202, change B, AAX 7021 and AAX These two experimental alloys are currently referred to as AA 7021 and AA 7029 and designated respectively as UNS Code A and A The third alloy shown in MS-6202, namely, AAX 7146[(AA 7146) or (UNS Code A 97146)] has been inactivated Temper Designations Temper is defined as the metallurgical structure and properties of a product resulting from thermal or mechanical processing treatments. Basic temper designations consist of letters shown in the Table 4. TABLE 4: TEMPER DESIGNATIONS Temper As fabricated Annealed Hardened Solution heat treated Thermally treated to produce stable tempers other than F, O, or H. Letter Designation F O H W T MS-8580, Change G, , Page 3

4 Temper Subdivisions Subdivisions of the basic tempers, where required, are indicated by one or more digits following the letter. Digits following H1, H2, and H3 indicate the degree of strain hardening. Tables 5 and 6 give examples of temper subdivisions for the H and T tempers respectively. A complete list of tempers as referenced in the American National Standard (ANSI) H35.1 is incorporated in the latest issue of either the AA Standards and Data Manual or SAE J993. TABLE 5: SUBDIVISION OF THE H TEMPER: STRAIN HARDENED H1 H2 H3 Strain hardened only Strain hardened and partially annealed Strain hardened and stabilized TABLE 6: SUBDIVISION OF THE T TEMPERS (T1-10): THERMALLY TREATED T4 T6 T9 Solution treated and naturally aged to a substantially stable condition Solution treated and artificially aged Solution treated, artificially aged, and cold worked 1.6 Product Forms Wrought aluminum and aluminum alloys are available in the product forms listed in Table 7. Cross references can be made by correlating the latest issues of the ASTM standard with SAE J454 "General Data on Wrought Aluminum Alloys" or to the AA alloy indicated by the UNS number. TABLE 7: PRODUCT FORMS Product Form ASTM Standard Sheet and Plate B 209 Tubing-Drawn Seamless B 210 Bar, Rod, and Wire B 211 Extruded Bars, Rods, Wire, Shapes & Tubes B 221 Tube - Seamless Extruded B 241 Forgings - Die and Hand B 247 Tube - Round Welded B 313 Rivet and Cold Heading Wire and Rod B 316 Condenser and Heat Exchanger Tube and Integral Fin-Seamless B 404 Tube Coils - Extruded B 491 Tube Round - Formed and Arc Welded B 547 MS-8580, Change G, , Page 4

5 2.0 MATERIAL CHARACTERISTICS These materials shall be made and processed in accordance to approved commercial practices. They shall be uniform in chemistry and quality; clean, sound and free from all surface and internal defects detrimental to the fabrication, performance or appearance of the parts for which they are intended. 3.0 CHEMICAL COMPOSITION Unless otherwise specified, the chemical composition of the alloys specified by this standard shall conform to the limits shown in the latest issue of the appropriate ASTM standard as referenced in the cross indexed portion of the UNS index for Aluminum and Aluminum Alloys or SAE J PERFORMANCE REQUIREMENTS OF THE MATERIAL 4.1 Mechanical Properties and Tests The mechanical properties of tensile strength, yield strength and percent elongation shall, unless otherwise specified on the engineering drawing, conform to the limits shown in the latest issue of the appropriate ASTM standard or SAE J454. Typical strength and elongation values are quoted by AA, in addition to hardness, shear, fatigue, modulus, and elevated temperature strengths. 4.2 Physical Properties and Tests Typical physical properties for most of the alloys covered by this standard are shown in the latest issues of SAE J454, or the AA Standards and Data Manual. Properties listed that may be of importance to the designer are: Melting Point Density (Specific Gravity) Coefficient of Thermal Expansion Thermal Conductivity Electrical Resistivity Electrical Conductivity 5.0 QUALITY Refer to CS-9801 for general quality requirements. 6.0 GENERAL INFORMATION Three asterisks *** after the section/paragraph header denotes multiple technical changes to the section/paragraph. A triple asterisk before and after a string of text (***text***) identifies a single change. Certain important information relative to this standard has been included in separate standards. To assure the materials submitted meet all of DaimlerChrysler requirements, it is mandatory that the requirements in the following standards be met. CS Application of this standard, the subscription service, and approved sources CS Regulated substances and recyclability Within Engineering Standards, the Regulatory (Government-mandated) requirements are designated by <S>, <E> and <H> which correspond to Safety, Emission and Homologation Shields respectively. The MS-8580, Change G, , Page 5

6 DCC-mandated requirements are designated by <D>, <A> and <T> and correspond to the Diamond, Appearance and Traceability symbols respectively. For specific information on this document, please refer to the contact person shown in the "Publication Information" Section of this document. For general information on obtaining Engineering Standards and Laboratory Procedures, see CS-9800 or contact the Engineering Standards Department at 7.0 REFERENCES The Aluminum Association (AA) Aluminum Standards and Data American National Standard (ANSI) H 35.1 American Society for Testing and Materials (ASTM) B 209, 210, 211, 221, 241, 247, 313, 316, 404, 491, 547 DS 56 CS-9003 CS-9800 CS-9801 Society of Automotive Engineers (SAE) HSJ 1086 J 454 J ENGINEERING APPROVED SOURCE LIST Not applicable 9.0 PUBLICATION INFORMATION Contact/Phone No: Kerri Roche (248) / ***Vinay Shah (248) *** Alternate Contact/Phone No: Dept. Name & Dept. No./Tech Club/Organization: Chassis & Powertrain Materials Engineering / 5810 Date Standard Originally (Initially) Published: Date Published: Change Notice: Description of Change: Updated format and publication information # # # # # MS-8580, Change G, , Page 6