Puthaw

An putháw (Iningles: Metal / Steel) (Pambansa: Bakal ^[1]) amo in usa ka elemento kimikal , elemento mineral u oro metal nga may tigaman nga Fe (Linatin:ferrum) ngan may atomiko ihap 26.

Ini an una na metal san transition series, kalayu an gamit pagtunaw sini, may-ada nagkahulug tikang ha himpapawid nga sugad hini, it hugis sini in lidung pag-pamatuud nga may-ada gravity nga nakakahimu hin bulalakaw, danay an pag-anas hihungdan kun lagas na an punu u kanan puthaw. Pinaagi sa bug'at, an puthaw an pinakakomon na elemento sa Kalibutan. Mahihiagian liwat an puthaw san iba na mga mabato na planeta.

An natural na puthaw may'ada upat na stable isotopes: 5.845% of 54Fe, 91.754% of 56Fe, 2.119% of 57Fe ngan 0.282% of 58Fe.

• Weeks, Mary Elvira; Leichester, Henry M. (1968). "Elements Known to the Ancients". Discovery of the Elements. Easton, PA: Journal of Chemical Education. pp. 29–40. ISBN 0-7661-3872-0. https://archive.org/details/discoveryofeleme07edunse. 

• H. R. Schubert, History of the British Iron and Steel Industry... to 1775 AD (Routledge, London, 1957)
• R. F. Tylecote, History of Metallurgy (Institute of Materials, London 1992).
• R. F. Tylecote, "Iron in the Industrial Revolution" in J. Day and R. F. Tylecote, The Industrial Revolution in Metals (Institute of Materials 1991), 200–60.

Kitaa an iron ha
Wiktionary, an gawasnon nga pagpurulongan o diksyunaryu.

An Wikimedia Commons mayda media nga nahahanungod han: Puthaw

• It's Elemental – Iron
• The Most Tightly Bound Nuclei
• Chemistry in its element podcast (MP3) from the Royal Society of Chemistry's Chemistry World: Iron
• Iron at The Periodic Table of Videos (University of Nottingham)
• Metallurgy for the non-Metallurgist