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!

*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

Impact Strength

Impact Strength

Impact Strength

I've got a very old material spec that calls out Izod Notched Impact Strength of 1.5 ft-lb/in (80 J/m) to ASTM D 256. I've got a Chinese data sheet that gives Notched Impact Strength of 10 kJ/m^2 to ISO 179. Note: does not say Izod. Any way to compare these two values or is it totally apples and oranges?


The Help for this program was created in Windows Help format, which depends on a feature that isn't included in this version of Windows.

RE: Impact Strength

It seems like the difference between peel strength (energy/length) vs tensile strength (energy/area)

I don't know there is a good way to match one to the other.

What is the dimensional difference in the two samples?

I see from the ISO page on ISO 179 that it is a Charpy test and that ISO 180 is the Izod test.


RE: Impact Strength

Thanks, looks like Ill have to ask the Chinese supplier to provide the Izod results or look for a different one.


The Help for this program was created in Windows Help format, which depends on a feature that isn't included in this version of Windows.

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! Already a Member? Login


Taking Control of Engineering Documents
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. Download Now
The Great Project Profitability Debate
A/E firms have a great opportunity to lead the world into the future, but the industry’s greatest asset—real-time data—is sitting wasted in clunky, archaic ERP platforms. Learn how real-time, fully interactive dashboards in a modern ERP allow you to unlock data that will shape the future of the world. Download Now

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close