×
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

Which is better material for One way clutch system casing SAE 8615 (8620) or 20CrMo

Which is better material for One way clutch system casing SAE 8615 (8620) or 20CrMo

Which is better material for One way clutch system casing SAE 8615 (8620) or 20CrMo

(OP)
I have 2 materials for one way clutch system, SAE 8615 (modified C% 0.1-0.14 or 8620 - Nickel Chromium Molybdenum Steel) and 20CrMo. This clutch is being used in starter motor. I could see failure of 20CrMo (Chromium Molybdenum Steel) like the casing getting crack in one particular variant. However on using 8615, there is no failure. I would like to understand why 8615 survives and 20CrMo do get crack. Irrespective of achieving case hardness , core hardness and case depth as per our requirement, I have crack onthe casing of 20CrMo material.

From metallurgical perspective, i would like to understand the superiority between 8615 and 20CrMo.
So I request someone to let me understand the difference

RE: Which is better material for One way clutch system casing SAE 8615 (8620) or 20CrMo

Got drawings?
Got detailed closeup pictures of the failure(S) ?
Was more than one part made of each material ?

3 down, 17 to go.

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