NF A10-003 A4-1971 CHEMICAL ANALYSIS OF FERROUS ALLOYS AND SILICON ALLOYS GRAVIMETRIC DETERMINATION OF CARBON 《铁合金和硅合金化学分析 碳的称重法测定 第4次修改》.pdf

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NF A10-003 A4-1971 CHEMICAL ANALYSIS OF FERROUS ALLOYS AND SILICON ALLOYS GRAVIMETRIC DETERMINATION OF CARBON 《铁合金和硅合金化学分析 碳的称重法测定 第4次修改》.pdf_第1页
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NF A10-003 A4-1971 CHEMICAL ANALYSIS OF FERROUS ALLOYS AND SILICON ALLOYS GRAVIMETRIC DETERMINATION OF CARBON 《铁合金和硅合金化学分析 碳的称重法测定 第4次修改》.pdf_第2页
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1、 AFNL NF ALO-003 M4 71 1012372 0004398 485 it NORME FRANAISE HOMOLOG U E ANALYSE CHIMIQUE DES FERRO-ALLIAGES NF A 10-003 ET SILICO-ALLIAGES Additif no 4 Fvrier 197 I DOSAGE GRAVIMTRIQUE DU CARBONE ADDITIF N“4A LA NORME NF A 10-003 (Dcembre 1967) Le prsent additif la norme NF A 10-003 (Analyse chimi

2、que des ferro-alliages et silico-alliages - Dosage gravimtrique du carbone) est constitu par la feuille intercalaire no 7 (voir au verso) destine tre encarte dans la norme la suite des six autres feuilles intercalaires. Homologue par arrt du 28-1-71 J.O. du 2- 2- 7 I 9053. Hemmerib. Petit et Cie. 2-

3、71. NF A 10-003 Add.4 l*TIRAGE 2-71 Reproduction intardlte. Chemical analysis of ferrous alloys and silicon alloys ; Gravimetric determination of carbon Chemische Analyse von Ferrolegierungen und Siliciumlegierungen ; Gravimetrische Bestimmung von Kohlenstoff. r I AFNL NF AIO-003 M4 73 D 1032372 OOO

4、i1399 313 - , ._ . NF A 10-003 Add. 4 -2- FEUILLE INTERCALAIRE No 7 A LA NORME NF A 10-003 (Dcembre 1967) CON DITIONS OPRATOIRES PARTICULIRES AU FER RO-TITANE chantillon Poudre passant au tamis douverture de maille de 160 pm. Prise dessai Environ 3 g, pess 0,005 g prs. Fondant Etaler dans la nacelle

5、 un mlange constitu par la prise dessai, 4 g de fer et 2 g dtain. Temprature de la combustion 1200 OC. Rptabilit de Ia mthode Lexprience a montr que lcart maximal admissible dun rsultat isol par rapport la moyenne entre plusieurs dosages conduits dans le mme laboratoire par le mme manipulateur trs au courant de lanalyse, est gal : k 0,003 pour une teneur en carbone denviron 0,050 %.

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