Wear and Stainless Steel
Wear and Stainless Steel
(OP)
I would be grateful if anyone could contribute from his/her experience to the following. We have a wear problem.....using 304 stainless steel sheet, we have a part that slides back and forth on it, and small rock dust particles get in between the urethane block and the 304. There are crosswise welds that become abraded rapidly. Once they are gone the rest of the structure doesn't last long. It would seem to me that a 17-4 PH could be an answer. I know, hardness isn't everything, but at least you can get RC40. If we get the sheet in the SHT condition, weld, and then age to H900 we shouldn't get too much distortion. Any words of wisdom (other than suggesting Hastelloy or Haynes Stellite) would be greatly appreciated.





RE: Wear and Stainless Steel
RE: Wear and Stainless Steel
http://www.finishing.com/kolene/qpq/index.html
Otherwise, if you have to have stainless steel, then mcguire's suggestion for changing to a martensitic grade like 410 is a good one. You can obtain more information using on this grade using the following links:
http://www.aksteel.com/pdf/markets_products/stainless/martensitic/410_Data_Sheet.pdf
http://www.alleghenyludlum.com/pages/products/PDF/mart400.pdf
http://www.cartech.com/
(click on Technical Information then Alloy Category, then Stainless Steels, then Martensitic Stainless Steels then Carpenter Stainless Type 410 for product info)
RE: Wear and Stainless Steel
RE: Wear and Stainless Steel
RE: Wear and Stainless Steel
RE: Wear and Stainless Steel
If you want this material, go to a stainless re-roller like Ulbrich, Somers, or Rodney( Allegheny, now). They use a lot of it for high tensile stainless.
RE: Wear and Stainless Steel
RE: Wear and Stainless Steel
roughness of the weld metal is catching some particles and
allowing galling or other form of wear to take place. If that is correct, could you adjust the weld procedure and have the welds ground flush?
RE: Wear and Stainless Steel
http://www.interstateplastics.com/meta/fmtur.htm
"The attempt and not the deed confounds us."
RE: Wear and Stainless Steel
We decided to do some lab tests to see if we could find any differences in abrasive wear resistance between 301 1/4 hard (candidate material), 304 (current material) and 17-4 PH H900 (candidate material) with and without weldments. The 301 1/4 hard was marginally better than the other two.
Now we are convinced that while stainless has the advantage from the point of view of the customer not thinking the part is ugly because it is covered with rust, it just plain has miserable wear resistance.
These parts are 0.050" thick bent sheet 22' long, welded crosswise every 10', so we are very concerned about distortion during heat treatment. Does anyone have a suggestion for a replacement material? An earlier post had a suggestion to use a convenional steel and then nitrocarburize, but the size and shape of the parts suggests to me that this might be impractical.