1、UDC 669.295.5.018-4 DEUTSCHE NORM November 1990 min max min may min max min max Titanium alloys Chemical com posit ion Chemical composition, as a percentage by mass Others Fel) O N C H2) Pd Ni Mo Single Total Ti Re- - 0,6 0,2 - - - - - - - 025 025 0,03 0,06 0,013 - 0,9 0,4 0,lO 0,40 mainder - Re- -
2、- - 0,15 - - - - - 0,15 0,12 0,05 0,06 0,013 0,25 - - 0,lO 0,40 mainder - Re- - - - 0,15 - - - - - 0,20 0,18 0,05 0,06 0,013 0,25 - - 0,lO 0,40 mainder - Re- - - - 0,15 - - - - - 0.25 0,25 0,05 O,6 0,013 0,25 - - 0,lO 0,40 mainder DIN 17 851 designation T;Ni0,8Mo0,3 Til Pd Ti2Pd Ti3Pd Titanlegierung
3、en; chemische Zusammensetzung Supersedes December 1973 edition. number 3.71 05 3.7225 3.7235 3.7255 In keeping with current practice in standardspublished by the International Organization for Standardization (ISO), a comma has been used throughout as the decimal marker. 1 Field of application This
4、standard specifies the chemical composition of semi-finished products made from titanium alloys. See DIN 1737 Part 1 for filler metals for welding titanium alloys. 2 Designation Titanium alloys covered in this standard shall be designated using the material designations or material numbers listed in
5、 tables 1 and 2. Example : Titanium alloy identified by symbol (material designation) TiAlGV4 or material number 3.71 65 shall be designated: Alloy DIN 17851 -TiAlV4 or Alloy DIN 17851 -3.7165 3 Chemical composition 3.1 Ladle analysis The chemical composition of low alloytitanium alloys as determine
6、d by ladle analysis shall be as given in table 1 and that of high alloy titanium alloys, as given in table 2. Table 1. Chemical composition of low alloy titanium alloys determined by ladle analysis l) Where the semi-finished product is intended for use in a corrosive environment, a lower Fe content
7、may be agreed. *) For finished or semi-finished products less than 2 mm in thickness or diameter, a maximum hydrogen content of 0,015 YO is permitted. Continued on pages 2 to 5 DIN 17851 Engl. Price group Beuth Verlag GmbH. Berlin, has the exclusive right of sale for German Standards (DIN-Normen). 0
8、6.91 Sales No. 0106 Page 2 DIN 17851 8 o, -5 aE u C - O O I *- - O O I t - O O I - - 2 10 O O 12 - a O c LD O I E“ I o In 2 ro O I O? Co O I 0- m I 0“ O Co I 9 O Co O I 0- Co O I 0- In 8 - n a, ;D z m C c ;- a, m O a in O I 0- rB O I 0- LD O I 9 in O I 9 II) O I 0- Ln O I 0- rT) O I - O 12 O O I N-
9、o O I - O I ;. O O I a- in O I a“ N O I -. m O I ci O O I c? - II O O I in - II O O I ? i O In O Q I u? *m cx E - In In m r rc EX E f 2 - ln cx E - ln o) h r W In d m r h In IC r h m cy C O 3 5 53 I- - DIN 17851 Page 3 Al 3.2 Product analysis The limit deviations in the product analysis from the lim
10、iting values specified for the ladle analysis are given in table 3. min. max. 23 6,75 k 0,30 4 Semi-finished products Table 4 correlates titanium alloy semi-finished products to grades, those commercially available being marked x and those manufactured on request only, marked (x). For specification
11、of the properties of semi-finished products, see the standards referred to in the respective column head. 5 Chemical analysis The elements listed in tables 1 and 2 shall be determined quantitatively using recognized methods.To permit comparison of the results with the limiting values given in this s
12、tandard,each value obtained shall be given to the same decimal place as that of the limiting value, using the rounding rules described in DIN 1333 Part 2. Table 3. Amounts by which the chemical composition as determined by product analysis may deviate from the limiting values specified in tables 1 a
13、nd 2 for the ladle analysis Element Limiting values as determined by ladle analysis, as in tables 1 and 2, as a percentage by mass I Limit deviation for product analysis I), as a percentage by mass 0,20 - + 0.15 + 0,04 I0,20 k 0,30 si Fe 0,015 0,15 0,25 Others 0,40 + 0,002 - + 0,05 f 0,02 + 0.05 I)
14、If a number of product analyses are to be carried out, the deviations shown by an element within one cast shall lie either only above the upper limit or below the lower limit of the range specified for the ladle analysis, but not both at the same time for one cast. Page 4 DIN 17851 Material designat
15、ion number TiNiO,8MoO,3 3.71 05 Til Pd 3.7225 Ti2Pd 3.7235 Strip; Tube Rod Wire Forgings plate and Plate sheet cut and sheet from strip DIN 17860 DIN 17860 DIN 17861 DIN 17866 DIN 17862 DIN 17863 DIN 17864 (X) X (XI (X) (X) (X) (X) X X X X X X (X) X X X X X X (X) Seamless Welded Standards referred t
16、o DIN 1333 Part 2 Presentation of numerical data; rounding DIN 1737 Part 1 DIN 17860 DIN 17861 DIN 17862 DIN 17863 Titanium wire DIN 17864 DIN 17866 Filler metals for welding titanium and titanium-paladium alloys; chemical composition and technical delivery conditions Titanium and titanium alloy pla
17、te, sheet and strip; technical delivery conditions Seamless circular titanium and titanium alloy tubes; technical delivery conditions (at present at the stage of draft) Titanium and titanium alloy rods; technical delivery conditions (at present at the stage of draft) Titanium and titanium alloy forg
18、ings (hammer forgings and drop forgings); technical delivery conditions Welded circular titanium and titanium alloy tubes; technical delivery conditions TiAL5Sn2,5 TiA14Mo4Sn2 TiAL3V2,5 Other relevant standard DIN 17850 Titanium; chemical composition X X - - - 3.71 15 - X 3.7185 X 3.7195 - - - - X X
19、 X X - (X) - - - Previous edition DIN 17851: 12.73. Amendments The following amendments have been made to the December 1973 edition. a) A distinction has been made between low alloy and high alloy grades. b) Ten further wrought titanium alloys have been included. c) Amounts bywhich the chemical comp
20、osition as determined by product analysis may deviate from the limitingvalues spec- ified for the ladle analysis have been included for the first time. d) The text has been editorially revised. DIN 17851 Page 5 Explanatory notes The series of standards on titanium and titanium alloys has been restru
21、ctured.The chemical composition of these materials is now dealt with in DIN 17850 and DIN 17851, the technical delivery conditions for semi-finished products such as tube,plate, sheet and strip being given in DIN 17860 to DIN 17863 and, DIN 17866. DIN 17865 now covers titanium and titanium alloy cas
22、tings and DIN 17864, forgings. It has been agreed to make the following amendments to DIN 17850 and DIN 17851. a) DIN 17850 covers unalloyed titanium only.Symbols have been introduced to identify the titanium grade,but these do not, unlike the designation of aluminium grades, indicate the level of p
23、urity. b) The scope of DIN 17851 has been extended to include ten further al1oys.a distinction being made between low alloy and high alloy grades. c) In both standards, separate specifications have been given for the chemical composition as determined by ladle and by product analysis. International Patent Classification C22C 14/00 G O1 N 33/20
