COLD-ROLLED STEEL WIRE HAVING HIGH RESISTANCE TO HYDROGEN EMBRITTLEMENT AND FATIGUE AND REINFORCEMENT FOR FLEXIBLE PIPES INCORPORATING SAME

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专利权人:

ARCELORMITTAL WIRE FRANCE

发明人:

FOISSEY, SYLVAIN,BASCOURT, GAËLLE

申请号：

EP20140833149

公开号：

EP3087207(A1)

申请日:

2014.12.22

申请国别(地区):

欧洲专利局

年份:

2016

代理人:

摘要：

A cold rolled steel wire having the following chemical composition expressed in percent by weight, 0.2≦C %≦0.6, 0.5≦Mn %≦1.0, 0.1≦Si≦0.5%, 0.2≦Cr≦1.0%, P≦0.020%, S≦0.015%, N≦0.010%, and optionally not more than 0.07% Al, not more than 0.2% Ni, not more than 0.1% Mo and not more than 0.1% Cu, the balance being iron and the unavoidable impurities due to processing. This wire has a microstructure including bainite and, optionally, up to 35% acicular ferrite and up to 15% pearlite. A fabrication method and flexible conduits for hydrocarbon extraction are also provided.

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