Continue to Site

Eng-Tips is the largest engineering community on the Internet

Intelligent Work Forums for Engineering Professionals

  • Congratulations waross 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: *

  • Users: rich4422
  • Content: Threads
  • Order by date
  1. rich4422

    Is this corrosion or a void in the metal?

    Hello, I am looking for some opinions on marks I have seen, under the microscope, in a steel air rifle barrel. This black mark is approx 1mm by 0.5mm. I believe it's a void in the steel, exposed by machining and NOT corrosion. What do you think...

Part and Inventory Search