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Carbon and Alloy Steels <br />3. COMPOSITION/INFORMATION ON INGREDIENTS <br />Components <br />CAS No. <br />"11911" <br />Exposure Llmlts <br />TLV m Im= <br />OSHA PEL <br />Baste Mew-ACGIH <br />Inun (Fe) <br />743"" <br />Belance <br />5 <br />Oxide Duet/Fume <br />10 <br />Oxide OusUFume <br />AtidYtnO <br />r;lgmerif <br />Aluminum (AI) <br />7429-90-5 <br />.40.05 <br />10 <br />Dust <br />15 <br />Duet <br />6 <br />Fume <br />S <br />Respirable fraction <br />Antmony (6b) <br />7440-30-0 <br /><0.9 <br />0.5 <br />As Anllmooy <br />0,6 <br />As Antimony <br />Arsenic (M) <br />7440-98-2 <br />`0.09 <br />0.01 <br />AsArsenic (At Cs,dnog6n) <br />0.01 <br />A%Arscnic <br />8"lrium (8e) <br />7440.41-7 <br />0.OD <br />As Beryllium (Al Carcinogen) <br />0.002 <br />As Beryllium <br />.40.08 <br />2 <br />As Beryllium (STEL) <br />0.003 <br />As Beryl Mum (CetNmg) <br />0,01 <br />Boron (B) <br />7440-42-8 <br /><0.9 <br />t0 <br />Owe Dust <br />15 <br />CaldeDust <br />Cadmium (Cd) <br />7440.43.9 <br />0,01 <br />As Cadmium (A2 Ceretnogen) <br />0.006 <br />As Cadmium <br />01 <br />0.00 <br />Reapirabfe fraction <br />0.0025 <br />As Cadmium (Action Levei) <br />2 <br />Calcium ice) <br />1905-7&8 <br />`0'9 <br />2 <br />Oxide Dust <br />5 <br />OAdeDust <br />Carbon (C) <br />7440-44-0 <br /><1.2 <br />Not Established <br />Not Established <br />Crtromium (Cr) <br />7440-474 <br />0.01.1.2 <br />0.5 <br />Metal <br />1 <br />Metef <br />Cobalt (Co) <br />7440.49-4 <br />co 09 <br />0.02 <br />As COWN (A3 Carcinogen) <br />01 <br />MetaUDuat/Fu ns <br />Copper (Cu) <br />7440-60-9 <br />X0.9 <br />1 <br />oust <br />1 <br />Dust <br />0,2 <br />Fume _ <br />0.1 <br />Fums <br />Dead (Pb) <br />.7439-92-1 <br />1 X0.07 <br />0,05 <br />Dust / Fume (A3 Carcinogen) <br />0.06 <br />Dust / Fume <br />Magnesium (1,119) <br />743-4-954 <br /><0.9 <br />Not Established <br />N(X4;$Iabfished <br />Manganese (liar) <br />7439-96-6 <br />02-2 <br />02 <br />Elemental Mn and Inoly <br />6 <br />Fume (Coling) <br />Compounds <br />Molybdenum (Mo) <br />7439.99-7 <br />@9 <br />10 <br />Insoluble Compounds <br />15 <br />Insoluble Compounds <br />Niobium (Nb) <br />744D-03-1 <br />40.9 <br />Not Eeleblrahed <br />Niokel (NI) <br />7440.02.0 <br />to <br />1.S <br />Metal <br />1 <br />Metal and Insoluble Cornpounda <br />Nitrogen () <br />7727-97r9 <br /><0.9 <br />Simple Asphyxiant <br />nN <br />Simple Asphyxie <br />Phosphorus (P) <br />772314.0 <br /><0.9 <br />0.1 <br />Phosphorus <br />0.1 <br />Phosphorus <br />Selenlum <br />770- , <br />t0.9 <br />02 <br />Selenium <br />0.2 <br />Selenium <br />Sinton (Si) <br />7440-214 <br />`ro 9 <br />10 <br />Dust I <br />15 <br />Dust <br />Sulfur (9) <br />7448-06- <br />80.9 <br />5.2 <br />SutfurDioxide <br />13 <br />Sulfur Dioxide <br />06 <br />13 <br />Sulfur Dldxlde (STEL) <br />Tin (Sri) <br />7440.91-5 <br /><0,9 <br />2 <br />Melal,0)dde and Inorganic <br />2 <br />Inorganic Compounds <br />Compounds <br />Tharlum (Ti) <br />744432-6 <br />`0'9 <br />Not 1=etabliehed <br />Not Eatebllshed <br />lungaten (W) <br />7440-337 <br />40.9 <br />5 <br />Insoluble Compounde as W <br />Not Established <br />10 <br />Insoluble Compounds as W (STFL) <br />Vanadium (V) <br />7440-62-2 <br />X0.9 <br />0.05 <br />Oxide DVWVurne <br />OS <br />Oxide Duet (Getting) <br />0.1 <br />Oxide Fume (Calling) <br />Zinc (Zn) <br />744"" <br />10 <br />Oxide Dust <br />S <br />Oxide Fume <br />0.0-0.10 <br />6 <br />OxldeFume <br />10 <br />Oxide Dust <br />10 <br />Oxide Fume ST <br />NOTE: No permlaelble exposure limits (PEL) or lhreshotd limit Values (TLV) exist far steel over all. The above listing Is a summary of <br />elements used In aloying Nucor Stool Products. Various grades of stee) will contain different combinattons of these elements and/or <br />trace materials. Exact speaftations may be found by calling the division and asking for a specifications sheet. <br />Page 3 of 8 Revlalon Date: 12/23/2014 <br />