Accession Number:
AD1158734
Title:
Partial Report on Low Expansion Alloys for Main Steam Lines
Descriptive Note:
[Technical Report, Formal Report]
Corporate Author:
NAVAL RESEARCH LAB WASHINGTON DC
Personal Author(s):
Report Date:
1940-01-26
Pagination or Media Count:
60
Abstract:
The properties of some low expansion alloys were studied with the purpose of determining their suitability for main steam lines aboard ship. Alloys of iron-nickel and iron-nickel-cobalt were prepared and their thermal expansion, physical properties and corrosion resistance were studied. In some alloys a material reduction in expansion could be obtained by heat treatment. However, heating to high temperature destroyed the low expansion properties. An alloy containing Fe-54 , Ni-28 and Co-18 has an excellent combination of low expansion, low modulus and high elastic limit. This alloy had an average expansion one-fourth that of carbon molybdenum steel between 70 and 800 F.