Material Hardness

CD4MCu commonly goes up to 48 HRC. Common die steels such as H11 or H13 are usually heat treated to about the same hardness. That is not the maximum achievable hardness, but the one that in general provides for the best combination of strength and ductility (toughness). Of course, depending on application.

Your question is very general. Please be more specific, i.e. what are you trying to achieve, what triggered your question. The maximum hardness is not going to help you much, I'll tell you right now. As I said, it all depends on the application.

we are manufacturing pump and for one cement slurry application we want to make pump from hard metal so wear and tear will be minimise. at present they are using Ni hard pumps but face problem , hardness of metal is approx 300 RHC . we want to achieve some more hardness so we want to make pump from WPS material.

please advise.

One place I worked made pumps.

For one of our customers we produced a specially treated Nihard impeller. It was so brittle that if you dropped it off the bench it would shatter like glass. If a nut got into our customers slurry, it would shatter the impeller, so they screened their slurry fairly carefully.

A competitor convinced them to try one of their pumps. the impeller lasted less than 24 hours! (Ours used to get about 2 months)

The point is, if your slurry is abrasive but has a small particle size, extreme hardness (with the attendant brittleness) can give good life.

Before you go this route, be very sure of the cause of pump failures. This solution only works in a limited type of situation.

Have tried surface treatment of the impellers to increase the abrasion resistance with a tough bulk metal? Contact technovationsintl@gmail.com for more information.

Welcome aboard!

milo