Strong, hardenable, corrosion resstant steel?

[legrand01]

Hello everyone,

I have a product that needs a specific type of steel that I'm not familar with. I'm used to tool steels and the requirement for this job is that it needs to be:

-a steel that can be hardened
-should have some sort of corrosion resistance
-must be impact and abrasion resistant

The current material being used is carbide, but you can't easily put threads on carbide, hence the desire to use a material that can be post-process hardened. I'd use something like A2 or D2 but it would rust too quickly I fear. This is obviously being used outside.

Any assistance is greatly appreciated. Thank you.

 

[JAWright]

I would recommend Ferrium S53. It is a 10Cr steel, so it's in-line with the corrosion resistance you're looking for - much better than non-stainless alloys but not a 316 stainless type. It has 53-55 Rc hardness, through hardened with ~70 ksi-sqrt(in) fracture toughness typical (50 is the design minimum). Possibly because it's carbide strengthened, like a tool steel or 440C, it has a lot better wear resistance than the PH stainless alloys. It's in the same alloy family as the Ferrium C61 mentioned earlier, but it is corrosion resistant and through hardened.

http://www.questek.com/ferrium-s53.html

http://www.latrobesteel.com/assets/documents/datasheets/Ferrium_S53.pdf

http://www.cartech.com/ssalloysprod.aspx?id=2870&terms=*ferrium+S53*

 

[NickE]

Why not a high work hardening alloy in the hadfields steels?

Or is that the astraloy_v?

If they wear very slowly, then they could cost more per unit, but have more value.

Nick
I love science!