Forum Technical Discussions      Re: penetrameter requirement Posted by: DJ Kallhof (PID_1317), E-mail: Address, on January 08, 2009 at 17:57 : In Reply to: penetrameter requirement posted by : susan , E-mail: Address, on January 08, 2009 at 00:50 : At least one engine manufacturer allows steel to be used in place of cobalt but I am not sure about nickel. A softer or less dense material may be used. The SPM I checked went so far to say use the penetrameter designated for the next greater part thickness if you are using a iron based penetrameter for nickel or cobalt. I checked the density of cobalt and nickel and they are nearly identical. Unfortunately, an auditor who doesn't understand the process could argue that nickel is actually a little denser and would disqualify the technique. ----------- Start Original Message ----------- : If I have a coblat material to x-ray but do not have any cobalt penes, is it acceptable to use Nickel penes? This is in regard to the aerospace industry. ------------ End Original Message ------------ Follow Ups: Post a Followup: Name: E-Mail: Subject: Comments: ----------- Start Original Message ----------- : At least one engine manufacturer allows steel to be used in place of cobalt but I am not sure about nickel. A softer or less dense material may be used. The SPM I checked went so far to say use the penetrameter designated for the next greater part thickness if you are using a iron based penetrameter for nickel or cobalt. I checked the density of cobalt and nickel and they are nearly identical. Unfortunately, an auditor who doesn't understand the process could argue that nickel is actually a little denser and would disqualify the technique. : : If I have a coblat material to x-ray but do not have any cobalt penes, is it acceptable to use Nickel penes? This is in regard to the aerospace industry. ------------ End Original Message ------------ Optional Link URL: Example: "http://www....html". Alternative write "http://www.ndt.net/wshop/attach/filename.htm" if you transfered a filename.htm via FTP Page Title: is important! Optional Image URL: http://www....gif Attention! Please click the button only once. This may take a moment to process Forum Technical Discussions Help