EN 24938-1990 Steel and Iron - Determination of Nickel Content - Gravimetric or Titrimetric Method《钢和铁 镍含量的测定 重量法或滴定法》.pdf

1、- CEN EN*24*938 90 m 3904583 0002322 3 m EUROPE AN STANDARD EN 24 938 MORUE EUROPEEME EUROPA1 SCHE ORU March 1990 UDC 669.1: 543.21: 540.74 Key words: Steels, Cast Iron, Chemical analysis, Determination of Content, Nickel, Gravimetric analysis, Volumetric analysis English version Steel and iron - De

2、termination of nickel content - Gravimetric or titrimetric method Aciers et fontes - Dtermination de la teneur en nickel - Mthode gravimetrique ou titrimtrique Eisen und Stahl - Bestimmung des Nickelgehalts - Gravimetrisches oder t itrimetrisches Verfahren This European Standard was accepted by CEN

3、on 1989-11-27 and is identical to the IS0 standard as referred to. CEN members are bound to comply with the requirements of the CENICENELEC Com- mon Rules which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and b

4、ibliographical references concerning such national standards may be obtained on application to the CEN Central Secretariat or to any CEN member. This European Standard exists in two official versions (English, French). A version in any other language Rade by translation under the responsibility of a

5、 CEN member into its own language and notified to CEN Central Secretariat has the same status as the official versions. CEN members are the national standards organizations of Austria, Belgium, Den- nark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands , Norway, Po

6、rtugal, Spain, Sweden, Switzerland and United Kingdom, CEN European Corrittee for Standardization Coait Europen de Normalisation Europisches Komitee fiir Normung . Central Secretariat: rue Brederode 2, 8-1000 Brussels (cl CEN 1990 Copyright reserved to all CEN menbers Ref. No. EN 24 938:1990 E Copyr

7、ight European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-I CEN EN*29*738 70 W 3904587 0002323 5 W I EN 24 938 Page 2 Brief Bistory On the proposal of the Technical Committee ECISS/TC 20 “Metho

8、ds of chemical analysis” the Coordinating Commission (COCOR) of the European Committee for Iron and Steel Standardization (ECISS) decided in November 1988 to submit the International Standard IS0 4938 - 1988 Steel and iron - Determination of nickel content - Gravimetric or titrimetric method to the

9、Formai Vote. This European Standard was adopted by CEN on 1989-11-27 According to the Common CEN/CENELEC Rules, being part of the Internal Regulations of CEN, the following countries are bound to implement this European Standards : Austria, Belgium, Denmark, Finland, France, Germany, Greece , Icelan

10、d , Ireland , Italy, Luxembourg, Netherlands , Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. The text of the International Standard IS0 4938, edition 1, 1988 was approved by CEN as a European Standard without any modification. Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-