AUTOCLAVE TESTING OF MONEL, NICKEL AND INCONEL
Abstract
Stressed and unstressed specimens of Monel, Ni, and Inconel were exposed to varied environmental conditions to test their resistance to corrosion. Experiments were conducted in autoclaves operated at 450 F and 422 psia for 50, 200 and 2000 hours. Environmental conditions included variations in concentration of chloride, oxygen, phase (liquid or vapor) and method of pH adjustment. Statistical methods were employed in designing experiments and analyzing results. An incipient surface dulling was noted on some of the specimens that were tested for 50 and 200 hr, but none of the specimens cracked or pitted. No cracking of any coupons was observed in the 2000-hr autoclave tests, but varying degrees of pitting did occur for all 3 metals. Typical corrosion rates from the 2000-hr data for coupons exposed to 1000 ppm chloride and 15 ppm oxygen were: Monel, 0.50 mdd; nickel, 0.38 mdd; and Inconel, 0.02 mdd. Based on the test results, the materials are listed in order of preference as follows: Inconel, nickel, and Monel.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1961
- Accession Number
- AD0267371
Entities
People
- J. Mcgrew
- S. Frank
- T. Page
Organizations
- Glenn L. Martin Company