Document: NRC Regulatory Guide
Document ID: 44b58049-ac63-457b-a075-ef162b34cb70
Document Type: regulatory_guide
Title: Materials code case Acceptability - - ASME Section III, Division 1 (Rev. 31)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML0037/ML003740365.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.85
CFR Part: 
CFR Title: 

Content:
5 XM-13 Forgings, Section III, Division 1 N-371 02-14-83 12 Cr-1W-lMo-1/4V Marten 07-18-85 sitic Stainless Steel Valve In ternals, Section III, Division 1 N-379 04-04-83 Bimetallic Tubing Section III, 07-18-85 Division 1, Class 1 N-418 12-05-84 Use of Seamless Ni-Fe-Cr-Mo 07-30-86 Cu Low Carbon (UNS N08028 and UNS N08904) Tubing, Section III, Division 1, Classes 2 and 3 N-438 02-23-87 Fe-24.5Ni-21Cr-6.5 Mo-0.2N 03-08-89 (Alloy UNS N08367) Seamless and Welded Pipe, Tube, Plate, Bar, Fittings, and Forgings, Class 2 and 3 Construction, Section III, Division 1 N-438-1 03-08-89 03-05-90 Fe-24.5Ni-21Cr-6.5Mo-0.2N (Alloy UNS N08367) Seamless and Welded Pipe, Tube, Plate, Bar, Fittings, and Forgings, Class 2 and 3 Construction, Section III, Division 1 N-438-2 03-05-90 UNS N08367 Material, Sec 07-27-92 tion III, Division 1, Class 2 and 3 Construction N-441 02-23-87 12-11-89 11-25-92 Use of 20Cr-18Ni-6Mo (Alloy UNS S31254) Fittings, Class 2 and 3 Construction, Section III, Division 1 19Code Case N-265 was allowed to expire on 1-7-83 because of an ad ministrative error. It was reinstated on 9-1-83 with no technical changes. The Case is, therefore, considered in effect during that period of time. Again, Code Case N-265 was allowed to expire on 12-31-84 (mandatory annulment date). It was reinstated as N-265-1 on 5-19-85. Because of the circumstances and because there were no changes in the Code Case, the NRC considers that this Case was in ef fect during the period of 12-31-84 through 5-19-85. N-443 05-07-87 High Yield Strength Cr-Mo 03-08-89 Steel, Class 1 Components, Section III, Division 1 N-466 03-08-89 Modified 9Cr-iMo Material 04-30-90 Section III, Division 1, Classes 1, 2, and 3 1.85-20 L N-474 05-06-89 Design Stress Intensities and 03-05-90 Yield Strength Values for Alloy 690 With a Minimum Yield Strength of 35 ksi, Class 1 Components, Section III, Divi sion 1 N-474-1 03-05-90 03-05-93 12-09-93 Design Stress Intensities and Yield Strength Values for UNS N06690 With a