1、August 19 UDC 669.721.5.018.26-4 : 539.4 DEUTSCHE NORM it I I Sa zz s2 *o:! a ep c, L. a= c: 9. es rzc - as- Oc .L .O 0- Halbzeug aus Magnesium-Knetlegierungen; Eigenschaften I DIN Magnesium semi-finished products 9715 Properties Supersedes Mav 1963 editior 1 Field of application The properties of m
2、agnesium semi-finished products apply to the dimensional ranges as specified in the table. 2 Details to be given when ordering The choice of material and condition on delivery is at the purchasers discretion. It is recommended that the purpose or the working process be indicated on ordering. When de
3、signating or ordering magnesium semi-finished products, the symbols and material numbers given in this standard must be used as specified in the designation examples of the dimensional standards. 3 Mechanical properties For the tensile strength, 0,2% yield limit and elongation at break the values gi
4、ven in table 1 apply. The requirements for the condition chosen are deemed to be met even if individual values of tensile strength and 0.2% yield limit extend into the next higher strength grade, provided the minimum elongation at break is achieved. In table 1 the values of Brinell hardness are give
5、n as approximate values. These values are not binding for acceptance. 4 Dimensions and permissible deviations For dimensions and permissible dimensional deviations and deviations of form DIN 9005 Part 3 and DIN 971 1 Part 3 apply. Continued on pages 2 and 3 Sole ale right8 of Qeman Standarda (DIN-No
6、men) are with Beuth Vodag OmbH. Bodin 30 DIN 9715 Engl. Price group , 04.83 Salas No. 0105 Page2 DIN9715 Tensile 0,2% Elongation strength yield limit at break Dimen- Rln R, 0.2 Al0 Sem i- Material sions 1 finished products N/mm2 N/mm2 % symbol I number min. mln. mtn. _ Brinell hardness HB Notes on 5
7、) approx. condition Tubes 21 3.5200.08 3.5200.08 3.5312.08 3.5612.08 MgMn2 F22 MgMn2 F20 40 extruded up to 2 220 165 , 2 over 2 200 145 1,5 40 straight- and re- ened or 45 drawnand re-straight- up to 10 240 155 10 up to 10 270 175 10 55 ened MgAl3Zn F24 MgA18Zn F31 MgAl6Zn F27 extruded 60 and hot- 3
8、.5812.66 Up to 5 O00 310 21 5 .6 hardened MgMn2 F20 MgAl3ZnF24 MgAl6ZnF27 MgAl8Zn F29 MgAL8Zn F31 3.5200.08 over 2 200 145 1,5 40 extruded 45 Ztraight- 3.5312.08 upto 10 240 155 10 3.5612.08 upto 10 270 175 10 55 ened 3.5812.08 up to 10 290 205 10 60 extruded and 6o hot- hardened 3.5812.66 up to 10
9、310 215 6 MgAl3Zn F24 MaAl6Zn F27 Extruded sections 2). 4) 3.5312.08 - 240 155 a 40 3.5612.08 - 270 175 6 55 extruded D forgings 2) MgAl8211 F29 3.581 2.08 - 290 205 6 60 extruded MgAL8Zn F31 3.5812.66 - 310 21 5 6 65 E:- hardened . *- DIN 9715 Page 3 over up to 25 55 55 - 5 Testing the mechanical p
10、roperties For testing the mechanical properties the test methods specified in DIN 50 125, DIN 50 140, DIN 50 145 and DIN 50351 apply. The test conditions of the Brinell hardness test are relative to the specific hardness values; see table 2. Table 2. Test conditions of the Brinell hardness test 5 02
11、 10 D2 -ell hardness 1 HB Load If the determination of the Brinell hardness according to DIN 50 351 is not possible, the Vickers hardness must be deter- mined according to DIN 50 133 Part 1; in this case the Vickers hardness values may exceed the given Brinell hardness values by 15 %. Standards refe
12、rred to DIN 9005 Part 3 Drop forgings of wrought magnesium alloys; permissible deviations DIN 971 1 Part 3 Magnesium extruded sections; permissible deviations DIN 50 125 Testing of metallic materials; tensile test specimens, directions for their preparation DIN 50 133 Part 1 Testing of metallic mate
13、rials; Vickers hardness testing; test load range: 49 to 980 N (5 to 100 kp) DIN 50 140 Testing of metallic materials; tensile test on tubes and strips from tubes DIN 50 145 Testing of metallic materials; tensile test DIN 50 351 Testing of metallic materials; Brinell hardness testing Further standard
14、s DIN 1729 Part 1 Magnesium; wrought alloys DIN DIN 17 800 1729 Part 2 Magnesium alloys; casting alloys, sand castings, gravity die castings, pressure die castings Commercially pure magnesium Previous editions DIN 9715: 11.43,04.60,05.63 Amendments Compared with the May 1963 edition the following amendments have been made: Values of tensile strength and 0,2 % yield limit converted to N/mm2. Values for sheet deleted. Values for MgZn6Zr deleted. Text editorially revised. International Patent Classification C 22 F 1/06
