CERTIFICATE OF ANALYSIS

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1 in cooperation with the WG Aluminium of the Committee of Chemit of GDMB CERTIFICATE OF ANALYSIS ERM -EB307a AlMg4,5Mn Certified value 1) Uncertainty 2) Element Ma fraction in % Si Fe Cu Mn Mg Cr Ni Zn Ti Pb Sn Ga V Be Ca Cd Co Li Sb 46 6 Zr ) Unweighted mean value of the mean of accepted et of data, each et being obtained in a different laboratory and/or with a different method of determination. The value are traceable to the SI (Sytème International d Unité) by the ue of pure ubtance of known toichiometry for calibration. 2) Etimated expanded uncertainty U with a coverage factor of k = 2 (Ca: k = 3; Co, Li: k = 2.5), correponding to a level of confidence of about 95 %, a defined in the ISO/IEC Guide 98-3:2008 [Uncertainty of meaurement -- Part 3: Guide to the expreion of uncertainty in meaurement (GUM:1995)]. Thi certificate i valid until 09/2066. All following page are an integral part of the certificate. Page 1 of 6

2 DESCRIPTION OF THE SAMPLE ERM-EB307a wa prepared by cating. The Certified Reference Material (CRM) i available in the form of dic (65 mm diameter and 30 mm height). Accepted a an ERM, Berlin, BAM Department 1 Analytical Chemitry; Reference Material BAM Diviion 1.6 Inorganic Reference Material Prof. Dr. U. Panne (Head of Department) Dr. S. Recknagel (Head of Diviion) Indicative Value Indicative value 1) Uncertainty 2) Element Hg 34 5 Na Indicative value were not certified, neverthele given for information, when the number of accepted data et wa conidered to be too low (< 5), when the uncertainty from the inter-laboratory certification wa coniderably larger than the expected range or when only an upper limit can be given. 1) Unweighted mean value of the mean of accepted et of data, each et being obtained in a different laboratory and/or with a different method of determination. The value are traceable to the SI (Sytème International d Unité) by the ue of pure ubtance of known toichiometry for calibration. 2) Etimated expanded uncertainty U with a coverage factor of k = 2 (Na: k = 2.5), correponding to a level of confidence of about 95 %, a defined in the ISO/IEC Guide 98-3:2008 [Uncertainty of meaurement -- Part 3: Guide to the expreion of uncertainty in meaurement (GUM:1995)]. Two laboratorie determined Boron and found 0.3 mg/kg and 1.6 mg/kg repectively. NOTE European Reference Material ERM -EB307a wa produced and certified under the reponibility of Bundeantalt für Materialforchung und -prüfung (BAM) in cooperation with the Committee of Chemit of GDMB Society of Metallurgit and Miner according to the principle laid down in the technical guideline of the European Reference Material co-operation agreement between BAM-LGC-IRMM. Information on thee guideline i available on the Internet ( INTENDED USE The CRM i intended for etablihing or checking the calibration of optical emiion and X-ray pectrometer (excluding micro-analyi) for the analyi of ample of imilar matrix compoition. The minimum ample ize for wet chemical analyi i 0.1 g. Page 2 of 6

3 INSTRUCTIONS FOR USE Before ue, the urface of the material mut be prepared by milling or turning on a lathe. For wet chemical analyi chip have to be prepared by turning or milling of the ample urface. STORAGE The material hould be tored in a dry and clean environment at room temperature (approx. 20 C). PARTICIPANTS AMAG Autria Metall AG, Ranhofen, Autria Bundeantalt für Materialforchung und -prüfung (BAM), Berlin, Germany Contellium, Centre de Recherche de Voreppe, Voreppe, France Hydro Aluminium Rolled Product GmbH, R&D, Bonn, Germany Hydro Aluminium Rolled Product GmbH, Hamburg, Germany Intitute of Non-Ferrou Metal, Gliwice, Poland Leichtmetall Aluminium Gieerei Hannover GmbH, Hannover, Germany Otto Fuch KG, Meinerzhagen, Germany TRIMET Aluminium SE, Een, Germany Certified value Ma fraction in % MEANS OF ACCEPTED DATA SETS Line no. Si Fe Cu Mn Mg Cr Ni Zn Ti Pb Sn Ga V M M i Page 3 of 6

4 Certified value Indicative value Line no. Be Ca Cd Co Li Sb Zr Hg Na M M i The laboratory mean value have been examined tatitically to eliminate outlying value. Each laboratory mean conit of at leat 4 but uually 6 ingle value. M : mean of laboratory mean : tandard deviation of laboratory mean M i : averaged repeatability tandard deviation (quare root of the mean of laboratory variance) ANALYTICAL METHOD USED FOR CERTIFICATION Element Line no. Method Si 1 XRF 2, 3, 4, 6, 9, 10, 11 ICP-OES, diolution with NaOH 5, 8 Spectrophotometry 7 Gravimetry Fe 1, 3, 6, 7, 12 ICP-OES, diolution with NaOH 2 ICP-MS, diolution with acid 4, 8, 11, 13, 14 ICP-OES, diolution with acid 9, 10 XRF 5 Spectrophotometry Cu 1 ICP-MS, diolution with acid 2, 5 XRF 3, 9, 10, 12 ICP-OES, diolution with NaOH 4, 7, 8, 11 ICP-OES, diolution with acid 6 FAAS, diolution with acid Page 4 of 6

5 Element Line no. Method Mn 1, 2, 3, 4, 11 ICP-OES, diolution with acid 5, 6, 7, 9, 10 ICP-OES, diolution with NaOH 8, 12 XRF Mg 1, 3 XRF 2, 4, 6, 8 ICP-OES, diolution with NaOH 5, 7, 9, 10, 11, 12 ICP-OES, diolution with acid Cr 1, 12 XRF 2, 4, 5, 7, 11 ICP-OES, diolution with acid 3, 6, 8, 9 ICP-OES, diolution with NaOH 10 ICP-MS, diolution with acid Ni 1, 6, 8, 10, 12 ICP-OES, diolution with acid 2 XRF 3, 5, 7, 9, 11 ICP-OES, diolution with NaOH 4 ICP-MS, diolution with acid Zn 1, 4, 7, 9 ICP-OES, diolution with NaOH 2, 8 XRF 3, 6, 10, 11, 12 ICP-OES, diolution with acid 5 ICP-MS, diolution with acid Ti 1, 4, 6, 10, 13 ICP-OES, diolution with acid 2, 3, 7, 8, 9 ICP-OES, diolution with NaOH 5 Spectrophotometry 11 XRF 12 ICP-MS, diolution with acid Pb 1 XRF 2, 5, 6, 9 ICP-OES, diolution with acid 3, 7 ICP-MS, diolution with acid 4, 8, 10 ICP-OES, diolution with NaOH Sn 1, 5, 6, 7, 8 ICP-OES, diolution with acid 2, 9 ICP-MS, diolution with acid 3, 4, 11 ICP-OES, diolution with NaOH 10 XRF Ga 1, 2, 5, 7, 8 ICP-OES, diolution with acid 3, 6 ICP-OES, diolution with NaOH 4 ICP-MS, diolution with acid V 1, 6, 7, 8 ICP-OES, diolution with NaOH 2, 9, 11 ICP-MS, diolution with acid 3, 5, 10 ICP-OES, diolution with acid 4 Spectrophotometry 12 XRF Be 1, 3, 4 ICP-OES, diolution with acid 2, 7 ICP-MS, diolution with acid 5, 6 ICP-OES, diolution with NaOH Ca 1, 2, 4, 5 ICP-OES, diolution with acid 3 ICP-OES, diolution with NaOH Cd 1, 5, 8 ICP-MS, diolution with acid 2, 3, 6 ICP-OES, diolution with acid 4, 7 ICP-OES, diolution with NaOH Page 5 of 6

6 Element Line no. Method Co 1, 6 ICP-OES, diolution with NaOH 2, 3, 4 ICP-MS, diolution with acid 5, 7 ICP-OES, diolution with acid Li 1, 5, 6 ICP-OES, diolution with acid 2, 4 ICP-MS, diolution with acid 3, 7 ICP-OES, diolution with NaOH Sb 1, 2, 3, 7 ICP-OES, diolution with acid 4, 5 ICP-MS, diolution with acid 6 ICP-OES, diolution with NaOH Zr 1 XRF 2 Spectrophotometry 3, 6, 8, 9, 11 ICP-OES, diolution with acid 4, 5, 7 ICP-OES, diolution with NaOH 10 ICP-MS, diolution with acid Hg 1 CVAAS 2, 4 ICP-MS, diolution with acid 3 ICP-OES, diolution with NaOH Na 1 ICP-MS, diolution with acid 2, 3, 4, 5 ICP-OES, diolution with acid Abbreviation: CVAAS: Cold vapour atomic aborption pectrometry ICP-OES: Inductively coupled plama optical emiion pectrometry FAAS: Flame atomic aborption pectrometry ICP-MS: Inductively coupled plama ma pectrometry XRF: X-ray fluorecence pectrometry TECHNICAL REPORT A detailed technical report decribing the analyi procedure and the treatment of the analytical data ued to certify ERM -EB307a i available on requet or can be downloaded from BAM webite ( Supply of thi Reference Material by: Bundeantalt für Materialforchung und -prüfung (BAM) Richard-Willtätter-Str. 11, D Berlin, Germany Phone: ale.crm@bam.de Fax: Internet: Page 6 of 6

Certified Reference Material

Bundesanstalt für Materialforschung und -prüfung (BAM) in co-operation with the Committee of Chemists of the GDMB Gesellschaft der Metallurgen und Bergleute e.v. Element Certified Reference Material BAM-M376a