Metal treatment – Stock – Ferrous
Patent
1996-07-19
1999-10-05
Evans, Geoffrey S.
Metal treatment
Stock
Ferrous
148909, 21912163, C22C 3818
Patent
active
059617489
ABSTRACT:
A laser-welded steel pipe includes: a steel pipe consisting essentially of C in an amount of 0.01 to 0.5 wt. %, Si in an amount of 1 wt. % or less, Mn in an amount of 0.05 to 2 wt. % and Cr in an amount of 6 wt. % or less; and a weld zone having a melted and solidified metal structure containing following equations: an amount of less than 0.2 wt. %, wt. % or more.
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Iwazaki Kenichi
Nagahama Yutaka
Ohmura Masanori
Ono Moriaki
Sato Akio
Evans Geoffrey S.
NKK Corporation
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