Corrosion resistant bourdon tube

C - Chemistry – Metallurgy – 22 – C

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C22C 38/22 (2006.01) G01L 7/04 (2006.01)

Patent

CA 1059799

CORROSION RESISTANT BOURDON TUBE Abstract of the Disclosure A corrosion resistant Bourdon tube for pressure gauges and the like formed of a vacuum purified ferritic stainless steel containing by weight about 26 percent chromium, about 1 percent molybdenum and ultra-low carbon and nitrogen content on the order of about 0.002 and 0.008 percent, respectively. By virtue of the metallurgical. structure of this composition affording good weldability and ductility, a Bourdon tube fabricated therefrom is characterized by substantial immunity to chloride stress cracking, and high resistance to both sulfide damage and pitting corrosion.

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