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A specified metal member included among the components of a valve, coupling or like fluid handling part for use in piping and fluid control devices is made of an alloy comprising, in % by weight, 0.001 to 0.01% of C, up to 5% of Si, up to 2% of Mn, up to 0.03% of P, up to 100 ppm of S, up to 50 ppm...

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Bibliographische Detailangaben
Hauptverfasser:	MATSUHASHI, RYO, SATO, JYUNJI, DAIDO, KUNIHIKO, AKAMOTO, HISATOSHI, MIYAGAWA, HIDEYUKI, KIMURA, YOSHIKI, KITA, TOSHIO, SOGABE, KYOTA, SUETSUGU, KAZUHIRO, MORIMOTO, AKIHIRO, YOSHIKAWA, KAZUHIRO
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ACTUATING-FLOATS ALLOYS BLASTING CHEMISTRY COCKS DEVICES FOR VENTING OR AERATING ENGINEERING ELEMENTS AND UNITS FERROUS OR NON-FERROUS ALLOYS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING JOINTS OR FITTINGS FOR PIPES LIGHTING MEANS FOR THERMAL INSULATION IN GENERAL MECHANICAL ENGINEERING METALLURGY PIPES SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING TAPS THERMAL INSULATION IN GENERAL TREATMENT OF ALLOYS OR NON-FERROUS METALS VALVES WEAPONS
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Beschreibung
Zusammenfassung:	A specified metal member included among the components of a valve, coupling or like fluid handling part for use in piping and fluid control devices is made of an alloy comprising, in % by weight, 0.001 to 0.01% of C, up to 5% of Si, up to 2% of Mn, up to 0.03% of P, up to 100 ppm of S, up to 50 ppm of O, 18 to 25% of Cr, 15 to 25% of Ni, 4.5 to 7.0% of Mo, 0.5 to 3.0% of Cu, 0.1 to 0.3% of N, and the balance substantially Fe and other inevitable impurities, the alloy having a CRI (crevice corrosion resistance index) value in the range of 40 ≤ CRI ≤ 55, as determined from the expression CRI = ÄCrÜ + 4 x ÄMoÜ + 30 x ÄNÜ wherein the amount of alloy components present in combination in the alloy to ensure crevice corrosion resistance are expressed in %by weight.