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BS 970-4

70th Edition, February 12, 1970

Complete Document

Wrought Steels in the Form of Blooms, Billets, Bars and Forgings Part 4: Valve Steels

Includes all amendments and changes through Amendment 4, August 1983


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Superseded By: BS EN 10090

EN
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W/D S/S BY BS EN 10090
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General requirements: information to be supplied by purchaser, product analysis and permitted variations, condition of material on delivery, hardness testing, etc. En steels replaced. Chemical composition, condition of supply, approval test and heat treatment of individual valve steels. Summary tables.