View Full Version : Pacific Sintered Metals?????


Vishnu
02-23-2004, 12:04 AM
Has anyone ever worked with their line of particle steels?
Just wondering if they have anything that is above and beyond what Crucible has?

http://www.pacificsintered.com/

Vishnu

Jerry Hossom
02-23-2004, 08:50 AM
Well, they really don't give much information on their steels. The fact they don't provide any formulation information is a little strange since anyone in the steel business can analyse a steel and define it's components down to the ppm range.

Just a wild guess, but given their obvious difficulties with the English language, I'd guess the materials are imported. Nothing wrong with that in and of itself unless they are infringing Crucible's patents, which could be the reason for the dearth of useful information.

shgeo
02-23-2004, 04:28 PM
Sintering is an older, lower tech process for producing powder metal technology that I understand does not produce 100% compaction and often leaves oxidation sites and voids in the metal that may (or will) form crack tip nucleation sites and weaknesses in the lattice. It is essentially similar to how PMs are canister welded forming mosaic patterns.

If you look at the Crucible method as a high pressure forging in a vacuum, you can see the difference. The lack of opportunities for internal oxidation sites is insured both by the vacuum and by the 100% compaction of the isostatic pressing.