Cladding for abrasion resistance

[eyec]

First, given the choice between inconel and tungsten carbide which would be a better choice for longevity?

Second, any other choices to consider?

Either would be clad to 316SS.

TIA

Steven C
Senior Member
ThirdPartyInspections.com

 

[SJones]

What environment will the hard facing or weld overlay be exposed to and in what specific application?

Steve Jones
Materials & Corrosion Engineer

http://www.linkedin.com/pub/8/83b/b04

 

[strider6]

Here you can find some info:

http://www.welding-advisers.com/Hardfacing.html

http://www.conformaclad.com/docs/Bulletins/TechBulletins/PL-004.pdf

EROSION RESISTANCE OF INFILTRATION BRAZED TUNGSTEN CARBIDE
CLADDING

http://www.conformaclad.com/docs/PapersPresentations/TappiW_2005.pdf

hoep this help u

S

Corrosion Prevention & Corrosion Control

 

[EdStainless]

If there is much corrosion you may favor the Ni based alloys.
I assume that you are talking about a flame spray or HVOF type of coating.
One problem with carbide on SS is that you will need a high binder level so that you have some 'give' to the coating since the substrate is so soft. You also need to use a Ni or mixed alloy binder rather than Co for corrosion resistance.
If these are big heavy parts that can be weld overlayed then I would also consider a Stellite type of coating.

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Plymouth Tube

 

[MikeMet]

In general, again general, Inconel (you don't state which one the 2 dozen Inconel alloys) has poor pure abrasion resistance when compared to tungsten carbide, which is true hard surface. Inconel 725 can be heat treated to fairly high hardness and give both corrosion and good, but not great, wear resistance.
When you say clad, do you mean weld overlay or thermal flame spray? You can clad Inconel plate, but there is no tungsten carbide plate to clad.
You can easily flame spray tungsten carbide over Type 316L sst without a more ductile inner layer.
If you need corrosion resistance and hardness, I recommend you try Ultimet or Tribacor alloys applied via weld overlay.
Bottom line, you need to better define what you need before an good answer can be given.

 

[rmw]

This is almost a 'how high is up' question. The OP hasn't stated what it is that is affecting longevity that the cladding is to resist. Quickly the mind goes to the possibility of cladding for fan blades, duct-work, hopper bottoms, pipe, tubeheets, boiler tubes, pulverizer mill parts, coal burner nozzles, just to name a few. There are companies whose whole existence is "cladding are us" and some are so specialized that they don't even compete in the same markets.

I think we need more specificity here in order to give a coherent answer.

rmw

 

[stanweld]

Consider one of the Stellite hard surfacing alloys.

 

[eyec]

sorry for not getting back sooner.
now it looks like cladding is out, based on some of your comments and a little side research, and consideration for alternate base material is being considered.

stellite is not a contender for the design. the design is proprietary and am now waiting to see what the design owner comes up with.

this has been a learning experience for me and you guys are great for offering your expertise.

thanks

Steven C
Senior Member
ThirdPartyInspections.com