×
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

Heat treatment for SAE 4140

Heat treatment for SAE 4140

Heat treatment for SAE 4140

(OP)

Hi
I need to know how to treat SAE 4140 to reach some special mechanical characteristics. We use an induction treatment and cool down the steel with oil.
We need to reach three groups of properties:
1)HB 426 , tensile strengh 1531 Mpa

2)HB 283 , tensile 931 Mpa

3)HB 216 , tensile 689

I need to know weather to forge, normalize, harden, temper or what??

thanks

Miguel

RE: Heat treatment for SAE 4140

Jimiexe,
The lower brinell is an annealling value.
Is this is a minimum value?  as rolled or
normalized value will give you some high
values and not need to be quench and tempered.

Normally quench and tempering this material
will give you values up to 375 brinell.
How thick are your parts?  I think that this
material in the normalized state is in the
300 brinell range.  I do not have any charts
before me.  Trusting only on memory.

Induction hardening is generally used for
surface hardening or localized hardening
for high surfaces to act as wear surfaces.

RE: Heat treatment for SAE 4140

Goto

http://www.matweb.com

You will have to register, but the information you need can probably be found here.

Jackboot

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