Accession Number:

AD0274371

Title:

Investigation of Fabrication Procedures for 16Cr-8Ni-2Mo Wrought Materials

Descriptive Note:

Corporate Author:

BABCOCK AND WILCOX CO ALLIANCE OH

Personal Author(s):

Report Date:

1961-10-03

Pagination or Media Count:

93.0

Abstract:

A wrought Cr-Ni-Mo austenitic stainless composition previously investigated for use as a welding electrode and designated as Croloy 16-8-2, was developed. It possesses creep and rupture strengths, in the temperature range of 1050 to 1350 F, which are equal to or greater than TP-304 and TP-321, while generally weaker than TP-347 and TP-316 stainless steels. Croloy 16-8-2 possessed a low yield strength at all test temperatures in combination with high ductility to fracture values and normal fracture strength levels. It was determined that 1350 F is the maximum safe long-time service temperature for Croloy 16-8-2, based upon oxidation characteristics. Intergranular corrosion tests show that aging up to 1500 hr at 1200 F did not eliminate intergranular corrosion while 75-hr aging at 1500 F provided intergranular corrosion resistance. No difficulty was experienced during the manufacture of hollow forgings or tubing of excellent quality.

Subject Categories:

  • Fabrication Metallurgy
  • Couplers, Fasteners and Joints

Distribution Statement:

APPROVED FOR PUBLIC RELEASE