×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

chrome-moly

chrome-moly

chrome-moly

(OP)
Does anyone have a chrome-moly profile provider?
This stuff is hard to find in 1"

Thanks

RE: chrome-moly

Chrome-moly is an old outdated vage definition to a group of alloy steels. Today an alloy steel is defined by its UNS, DIN, ISO, AFNOR, AISI, SAE and many more specification number. You should define the alloy you need according to its standard definition such as AISI 4340 for example. When you say 1" what sre you refering too? Round?, square?

RE: chrome-moly

(OP)
well i need a profile so 1" plate. This is an engineered stamped drawing and all thats stated is chrome-moly plate. I don't normally deal with the stuff except in shafting so i don't have much knowledge on plate grades. My guess would be 4130?? but theres also SA 387 Gr. 5,11,22 i see available. I was hoping to find a supplier to talk to, to get some info, unless anyone here can give some insight to this stuff. (availability, strengths, weaknesses, machinability etc.)

RE: chrome-moly

marmon,
To better help you, what is the service for the part? Also have you asked the Engineer/Engineering Organization that stamped the drawing?

RE: chrome-moly

(OP)
Its a 875 psig orfice plate. Ya i tried the eng dept. but they never seem to return calls

RE: chrome-moly

I would presume your material specification is

ASTM or ASME A/SA 387 plate. The specific grade of Cr-Mo plate would be selected based on service temperature. Do you know the service temperature?  

RE: chrome-moly

If the oriface plate is used in steam or petrochemical plant service, I would think SA-387 Gr 11 or 22. If in oil/ field tubulars, it may well refer to 4130 or 4140. It is unfortunate that Engineers, and I use the term facetiously in this case, provide such ludicrous information for their material callouts; these were no doubt based on equipment purchased from a particular Vendor at one point in time, possibly as long ago as 30 to 50 years based on some of my own experiences.  

RE: chrome-moly

(OP)
yes in this case it would be steam. (co-gen plant)

RE: chrome-moly

If you're in the US, you might contact Arcelor Mittal or one of their distributors.  Over the years, I've found the technical folks at Mittal to be very helpful.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources