HVOF sprayed Hastelloy C hardness range, anyone?? Hmmmm

Hi Intel55

If memory serves me right, typically around 300 HV (30 HRC equiv). So far not been able to find documented hardness tests on this coating so treat this as a guestimate

Gordon Wrote:Hi Intel55

If memory serves me right, typically around 300 HV (30 HRC equiv). So far not been able to find documented hardness tests on this coating so treat this as a guestimate

Thanks!
Yeah, I have not been able to find anything. Tried Ametek and they do not know right now.

1. Hastelloy C-276 coating by HVAF is about 290 HV300.

http://www.kermetico.com/products-services-alloy.html

2. Wrought polycrystalline C-22 alloy with HV250.

3. Hastelloy C by DJ2700: 506 (3.2 Table 3)
http://www.hsu-hh.de/werkstoffkunde/inde...Qp0pD.html

Hi ycwbycwb

Thanks for the links, I particularly found the High Velocity Wire and Rod Combustion Spraying an interesting link (my link is to the English version rather than German )

Hi Intel55

Thinking back I do seem to remember getting unexpected high hardness for Hastelloy C on a few HVOF sprayed samples (~500 HV). Though I think hardness evaluation at the time was purely curiosity and not a requirement for a anti-corrosion coating. So I think the hardness will be very dependent on the process and parameters. The coatings will probably be very much harder than the wrought or cast Hastelloy C anyway.