×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Contact US

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

Materials specs and properties
3

Materials specs and properties

Materials specs and properties

(OP)
Hi folks first post beers on me!.

I have been handed a note from my manager asking for some info on:-

1 A Cast Iron the grade on the drawing is 500/7 and a supplier has recommended 600/3. What do these numbers mean please? Or where can I find a table of properties etc? I'm not sure of composition for this one.

2 We have a 'Unified Number' for a carbon steel it is G10210, although I have an list of ASTM numbers Boss wants a BS number or cross ref list (for both). Composition is

C 0.18-0.23
Mn 0.60-0.90
P 0.04 max
S 0.05 max

Thanks

RE: Materials specs and properties

Try www.matweb.com and under search type
G10210. If you don't have the internet
then try 1021.

Not know the size and purpose of what your
looking the web site will help you better
and you can print out the information
you need.

Andy Kaczmarek

RE: Materials specs and properties

2
The UNS designation is for an alloy typically called 1021 in the U.S.  SAE J403 is the standard specification for the chemical composition of carbon steel grades like 1021.  The equivalent BS spec would be BS 970, grade 070M20.  SAE 1021 steel is often aluminum killed for grain refinement, but this is not specifically addressed in SAE J403.

I have a question for you regarding the cast iron designations.  Are you sure that they aren't supposed to be:

60-03
and
50-07

The reason I am asking is because ASTM A 536 Standard Specification for Ductile Iron Castings references grades as follows:

80-60-03, which means 80 ksi tensile strength (550 MPa), 60 ksi yield strength (410 MPa), and 3% minimum elongation.  70-50-05 is the next standard grade, then 60-42-10.

RE: Materials specs and properties

Yes TVP is right. The mechanical properties are given as grades. Tensile strength followed by elongation. But I doubt it being cast iron. It must refer to Ductile iron. Cast iron cannot have such high strength values and also a elongation of 7%. Hope this helps.

RE: Materials specs and properties

(OP)
Thank you very much folks I will pass this information on. As for 500/7 being 50 07 etc it is possible I will ask the person that gave me the basic info.

Thanks again.

RE: Materials specs and properties

Folks, since PrImpEng asked for a British equivalent of 1020, I'd tend to assume the 500 and the 600 were MPa.  That would give tensile strengths of roughly 72 and 87 ksi, which sound reasonable, and achievable, for cast iron.

In any case, I think that TVP and arunmrao are correct, and that the numbers refer to ductile (aka nodular, aka spheroidal) iron, a grade of cast iron containing additives that make the graphite clump into round aggregations.  PrImpEng, if you check with a local iron foundry, they should be able to enlighten you on the callout choices.

Good luck!

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



News


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