USA Domestic HSLA 1

[MadMango]

HSLA- high strength low alloy

We had specified some material from SSAB Swedish Steel, with their proprietary name of Domex 110 XF, which conforms to EN 10149-2 Grade S700MC. This "as rolled extra high strength cold forming steel" has 110ksi. The chemical coposition is:

C.12%, Si.6%, Mn 2.1%, P.025%, S.025%, S.01%, Al.015%,Cb.06% Ti.2%

We are having problems with our supplier, on the order of 8-10wk lead times to get this into California. This is realy hindering our production numbers. Does anyone know of a comparable material that can be acquired domestically in the USA? Material thickness is 5/16 plate, at least 10in X 36in.

Ray Reynolds
"Computers in the future may weigh no more than 1.5 tons."
Popular Mechanics, forecasting the relentless march of science, 1949
Have you read faq731-376 to make the best use of Eng-Tips Forums?

 

[NickE]

Is the 110ksi strength you mention yield or tensile? It seems that you have a grade similar (but not covered under the spec) SAEJ1392. The problem is that as of the 1998 book I have there is no yeild greater than 80ksi. What I would do is call a few secondary suppliers. I seem to remember that we would get some masters in with strengths that high.

In the US HSLA steels are commonly specified by this method:

(yield strength) (chemistry modifier) (carbon modifier) (steelmaking practice)

So an HSLA steel with a yield of 110ksi and a tensile of 120ksi, carbon less than 0.20%, killed and made to a fine grain practice; would have the designation:

110XHK

While your steel (if 110 ksi is the yield) would be:

110X(Y or Z)L F
If the 110 is the tensile strength):
090ZLF

Basically:

X - 10ksi spread btw yield and tensile (Allowed alloying elements: Cb, Cr, Cu, Mo, Ni, Si, Ti, V, Zr, and possibly N and P)
Y - Same alloying elements as X but the yield-tensile difference is now 15ksi
Z - Same alloying again but yield-tensile is now 20ksi

H - max carbon content of ~0.22% (depends upon grade)
L - max carbon content of ~0.13% (depends upon grade)

K - Killed, made to a fine grain practice
F - Sulfide inclusion controlled, killed, and made to a fine grain practice.


Nick
I love materials science!

 

[TVP]

Hoesch Hohenlimburg, part of ThyssenKrupp AG, is one producer of this type of steel. Use the following links for more information:

Technical

http://www.mittelband.de/webmiba-e.nsf/index

Sales

http://www.tkmna.thyssenkrupp.com/tincna/division/project/html/home.html

Corus Strip Products IJmuiden & ISG (not sure which plant) also produce 100+ksi HSLA grades. They are available from Steel Warehouse:

http://www.steelwarehouse.com/steelwarehouse/default.htm

 

[unclesyd]

If the 110 ksi UTS this maybe an alternate.

http://www.ipsco.com/Products/ProductsSteelIPSCO80.asp

 

[MadMango]

110ksi is UTS.

[blue]Unclesyd[/blue], I think you identified a winner. Everyone else, thanks all for the quick info. I love these forums.

Ray Reynolds
"Computers in the future may weigh no more than 1.5 tons."
Popular Mechanics, forecasting the relentless march of science, 1949
Have you read faq731-376 to make the best use of Eng-Tips Forums?