1、IDC 669.721.5.018.26 DEUTSCHE NORM August 19t Wrought magnesium alloys DiN 1729 Part 1 Magnesiumlegierungen; Knetlegierungen Supersedes May 1963 edition As it is current practice in standards published by the International Organization for Standardization (so), the comma has been used throughout as
2、a decimal marker. 1 Field of application This standard contains specifications for preferred wrought magnesium alloys. The specifications relating to the composition apply both for casting sizes and for semi-finished products, see clause 5. 2 Designation When designating and ordering wrought magnesi
3、um alloy castings, the symbols and material numbers given in the table of this standard must be used. 2.1 Example of the standard designation Designation of a wrought magnesium alloy with the symbol MgAL3Zn and the material number 3.531 2: Alloy DIN 1729 - MgAl3Zn or Alloy DIN 1729 - 3.5312 2.2 Exam
4、ple of an order 500kg of wrought magnesium alloy with the symbol MgAL3Zn and the material number 3.531 2 in extrusion ingots: 500 kg alloy DIN 1729 - MgA13Zn in the form of extrusion ingots or 500 kg alloy DIN 1729 - 3.5312 in the form of extrusion ingots 3 Composition (see taMe on page 2) The weigh
5、t must be calculated on the basis of a specific gravity of about 1.8 kg/dm3. 4 Testing the composition Arbitration analyses and sampling must be carried out in accordance with the latest edition of “Analyse der Metalle“ (Analysis of Metals) of Chemikerausschuss der Gesellcchaft Deutscher Metallhutte
6、n- und Bergleute e.V. (Chemists Committee of the Association of German Metallurgists and Mining Engineers) Volume 1 “Cchiedsanalysen“ (Arbitra- tion Analyses) and Volume 3 “Probenahme“ (Sampling) (Berlin - Gttingen - New York: Springer-Verlag). The rounding rule according to DIN 1333 Part 2 must be
7、applied to each individual value determined. The rounded number must not exceed the limiting values specified for the composition. 5 Form on delivery Casting sizes, e.g. extrusion ingots. Semi-finished products, e.g. tubes, bars, extruded sections, drop forgings. Continued on page 2 Sole sale nghta
8、of German Standards (DIN-Normen) are with Beuth Veriag GrnbH. Betiin 30 DIN 1729 Part 1 Engl. Price group 5 Sales No.0105 03.83 Page 2 DIN 1729 Part 1 Table Notes on use Composi ti on Content by mass in % Sem i -f i n i shed products conforming to DIN 9715 Material Characteristic properties 1, 2) Al
9、loying constituents Permissible impurities symbol number - 3.5200 3.5312 si 0,lO Cu 0,05 Al 0,05 Zn 0.03 Fe 0,005 Ni 0,oo 1 Others total 0.10 corrosion- resistant good welda bit ity readily workable claddings Fuel tanks anodes tubes bars extruded sections Mn 1,2 to 2,O Mg remainder MgMn2 structural
10、members subject to medium mechanical stress with still good resistance againsi chemical actions for special purposes e.g. etching plates, anodes si 0,1 Cu 0.1 Fe 0,03 Ni 0,005 Others total 0,l tubes bars extruded sections drop forgings Al 2,5 to33 Zn 0,5 to 1,5 Mn 0,05 to 0,4 Mg remainder medium str
11、ength weldable workable MgAUZn si O, 1 Cu o. 1 Fe 0.03 Ni 0,005 Others total 0.1 tu bec bars extruded sec ti ons drop forgings structural members subject to medium to high mechanical stress medium to high strength I imi ted weldabil ity Al 5,5 to 7,O Zn 0,5 to 1,s Mn 0.1 5 to 0,4 Mg remainder 3.5612
12、 MgAlGZn structural members subject to high mechanical strength si o, 1 Cu 0,05 Fe 0,005 Others total 0,30 bars extruded sections drop forgings Al 7.8 to 9,2 Zn 0,2 to 0,8 Mn 0,12 to 0,3 Mg remainder highest strength 3.5812 MgAl8Zn l) All wrought magnesium alloys listed in this standard have excelle
13、nt machining properties. *) The particulars “corrosion-resistant“, “good weldability“, “readily workable“, etc. are valid only as a means of differentiating between different magnesium alloys. Standards referred to Further standards DIN 1333 Part 2 Presentation of numerical data; DIN 1729 Part 2 Mag
14、nesium alloys; casting alloys, sand castings, gravity die castings, DIN 9715 Magnesium semi-finished products; pressure die castings Previous editions DIN 1717: 5.38, 12.41;DIN 1729Part 1: 11.43,04.60,05.63 Amendments Compared with the May 1963 edition the following amendments have been made: Alloy MgZn6Zr (2.5161) deleted. Colour marking deleted. Editorially revised. international Patent Classification C 22 C 23/00 C22F 1/00 rounding properties DIN 17 800 Commercially pure magnesium
