A992-06 change?

Date 01-29-2009 15:22

MDK,

Not sure if I got the total concept of your question. But, I have noticed a lot of usage being specified as A-992 that used to be A-36 or A-572 for building structurals. Was even told at one fab shop that A-36 was on the way totally out. Being replaced by A-992. Thought at first he was just talking about their shop facilities. I had not read or heard anything along that line previously, but with your question, it is starting to look like there might be a total transition not just an addition of a grade of wide flange.

Would be interesting to see if anyone else here has more specific info about this so I don't confuse the issue.

Have a Great Day, Brent

By Mikeqc1 (****)

Date 01-29-2009 15:31

i did a quick search on this and it seems like there is a change.
Any1 else have any input?
MDK

By supermoto (***)

Date 01-29-2009 15:47

All of our W-shapes are A-992 material. Things like base plates and thick materials are 572-50. We use a lot of A36 for smaller material thicknesses.

By hogan

Date 01-29-2009 16:04

Mikeqc1,
Here is a link to modern steel construction, Jan 1999. If you can find the entire article it probably has more detailed information

http://www.modernsteel.com/steelinterchange_details.php?id=450

By trapdoor (**)

Date 01-29-2009 18:27

I've been inspecting structural steel for 9 years now and i have never seen A36 W shapes. Only plates, angle, channel etc. At first i saw alot of A572 but now it is all dual or tri grade. I think you would be pressed to fint A36 beam shapes but then again i've never looked.

By James Corbin (**)

Date 01-29-2009 19:52

In 2004 a job I was on used smaller W shape A36. We had to special order it from directly from Nucor and paid a lot more for it. It's what the customer spected out.
But then again when you order 600 ton the mill will make what ever you want.
Checking out the MTRs I noticed of the past years all things being equal, if it is just A992 the yield just makes it and some CVNs have failed, if it is dual cert its usually a higher yield and all the CVNs pass, and if it is A572 only its even stronger and very high CVNs.

Again just from what I have noticed

By eekpod

Date 01-29-2009 23:21

A992 is the standard for structural shapes. It takes the place of A572-50, A36. It makes things easier for MTRs and such for tracability. When you compare them, they are basically the same, , that is a992 and a572-50, it just consolidates it. I'm at home, I don't have all the info here, but it is the way of the future. Chris

By 803056

Date 02-02-2009 05:07

There are a couple of things to be aware of;

1) the mill has to balance the chemistry to fall within a range for the carbon equivalency
2) must be welded with low hydrogen (process or electrode)
3) it is not the same as or a simple replacement for A36; chemistry and mechanicals are different.

Best regards - Al