×
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

Need UTS &Yield on 4150 Large dia bar

Need UTS &Yield on 4150 Large dia bar

Need UTS &Yield on 4150 Large dia bar

(OP)
I'm trying to get specs on 16" diameter, 4150 steel, nonresulfurized. All the specs I can find end at 8" dia which shows about 115 ksi ultimate tensile, 85 ksi for 0.2% yield. Our vendor couldn't do any better.

Any easy way to estimate the change as bar size grows? It appears to lose about 5 ksi per 2" diameter increase, but I doubt this is linear.

HELP!

Keep the wheels on the ground
Bob

RE: Need UTS &Yield on 4150 Large dia bar

Bob, Minimum expected longitudinal mechanical properies at mid-radius of the round bar or shaft for 4150, normalized and tempered to 220/260 BHN, for a steel forging of 8" to 24" dia. is 109,000 psi tensile and 74,000 psi yield,
elongation 19%, R.A. 42%.
What is the heat treatment on your piece?   

RE: Need UTS &Yield on 4150 Large dia bar

(OP)
Thanks Emery!
Not sure what the final heat will be - I think it was spec'd at about the hardness you referenced - this was info a customer requested to do more meaninless calculations on a preliminary design.
I have recommended that we look at using 4340 when the shaft gets above 8 > 10" range - a bit more $$ but less risk.
I asked our vendors and they couldn't come up with anything, so you are definitely the MAN today!
Thanks again

Keep the wheels on the ground
Bob
showshine@aol.com

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