ML20154K961

Summary of 880204 Meeting Re Presentation Made by Allegheny Ludlum on Ferritic Stainless Steel E-Brite

ML20154K961
Person / Time
Site:	Arkansas Nuclear
Issue date:	02/05/1988
From:	Woolridge E NRC OFFICE OF NUCLEAR REGULATORY RESEARCH (RES)
To:	NRC OFFICE OF NUCLEAR REGULATORY RESEARCH (RES)
Shared Package
ML20154K954	List: ML20154K949 ML20154K956 ML20154K961
References
NUDOCS 8809260060
Download: ML20154K961 (2)

Text

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.f NOLAN'S EXHI BIT N' I O '. .

s NOL A N / LO G A N ( N R C )

SHEET 2 _O F E

/,,..,,, NUCLE AR unstro STATES REGULATORY COMMISSION

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wasutNoioN,0. c. rosss g

s.,e..../ f EB 0 $ 1998 C. Z. Serpan, Jr., Chief MEMOPANDUM FOR:

MEB/0E/RES E. O. Woolridge  ;

FROM:

MEB/DE/RES -

SUBJECT:

PEETING ON E-Bo.!TE ALLEGHENY t.UDLUM ST l j

(AL) on the I On February 4. I attended a presentation made by Allegheny Lu I ferritic stainless steel.E-Brite.

since 1978. heat ex-The only known nuclear This application tubing has a .066d of this alloy is in tubing for a change in Arkansas Unit 2.

by At.. d to have E-Brite is melted in a vacuum induction furnace l corrosion-and rigidly very low interstitials, thus enhancing resistance in intergranu ar superior ductility. it The alley has a low CTE, work harden it is known as one less of thethan superaustenitic to SCC, pitting and crevice corrosion.The prire application for ferritics 55.

environment. ~ l d by type The ductile brittle transition temperature DBTT is strongly lbs-fracture inf of notch, material thickness, criteria for stating DBTT (ft-appearance-strain rate, etc.) but doesn't The stabilizing (Nb) greatly improves ducti,11ty in thin sectio help much in thick sections. t ination During fabrication (welding) N, orcontamination C pick up is a real probl bad on impact.

with C. N, , grease, HC is a no-no. for sue:essful Tubing weld from strip must be argon shielded inside and.ou walding. d informa-

~ Included with this remo is a handout detailing the presenta tion on E-Brite.

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E. O. Woolridge 8809260060 880921 m PDR P

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