Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

Register Log in
  • Congratulations MintJulep on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Search results for query: *

  1. Simon55

    12% MN to carbon steel

    Sorry I can't get into specifics right now, but I have come across this situation before. A stainless steel electrode was used (with all the inherent problems) in this particular situation - and is probably the best bet for you also. As far as NDT, depending on the code/standard you have to...
  2. Simon55

    Mech testing of spun grey cast iron pipe

    Perhaps this needs some clarification... Centrifugal casting produces a variable microstructure through the wall thickness. A very fine structure of irregular graphite nodules in a ferrite matrix is produced at the outer surface, an interdendritic fine flake structure through the mid section, to...
  3. Simon55

    Mech testing of spun grey cast iron pipe

    Due to some recent failures of a spun grey cast iron water mains (due to graphitic corrosion from both internal and external surfaces) I would now like to determine the mechanical properties of the pipe material. This information would then be used to assess the critical flaw size and potential...
  4. Simon55

    Old Cast Iron Materials Testing

    Considering the age and the likelihood of them being grey cast iron, there is also a possibility for graphitic corrosion. This is very hard to detect via NDT, but may show up on the valves if they are of the same material.
  5. Simon55

    Identification of hard grey coating on aluminium strip

    I have a sample of aluminium (6061-T6) that has a hard, highly adherent matt grey coating on both surfaces. I need some method of identifying the coating type. Any ideas? What I know so far is -The coating remains intact/adherent during a tensile test -coating is harder than the aluminium...
  6. Simon55

    oxidation and cracking of copper

    This is sort of a two part question. At what temperature does copper begin to experience rapid oxidation in atmospheric conditions? Is this temperature related to the type of oxide being formed? (eg CuO vs Cu203). On a separate issue, has anyone come across branching transgranular type cracking...
  7. Simon55

    oxidation and cracking of copper

    This is sort of a two part question. At what temperature does copper begin to experience rapid oxidation in atmospheric conditions? Is this temperature related to the type of oxide being formed? (eg CuO vs Cu203). On a separate issue, has anyone come across branching transgranular type cracking...

Part and Inventory Search

Back
Top