M390 inlay into Patterned Steel.

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BigMac28

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May 11, 2020
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Is it possible to forge out a pattern steel billet.(15N20 and 1095). Then proceed to forge inlay M390 in the center of billet. Any advice or problems that may arise would be helpful.
 
Depending on your skills and equipment, it is possible.

I would guess that you would need to cut a matching opening in the billet, cold forge the insert in snug, then TIG the insert all around before forge welding it in solid.
 
BigMac28 said:
Is it possible to forge out a pattern steel billet.(15N20 and 1095). Then proceed to forge inlay M390 in the center of billet. Any advice or problems that may arise would be helpful.
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May I ask why you want to use m390 as an inlay instead of any number of cheaper steels to use as an inlay? 410, 416, or 420 would be less problematic to weld, and cheaper.
 
Also curious about the particle metallurgy stainless core with a simple carbon steel damascus cladding. That's an interesting choice... usually you see stainless cladding over a carbon core when people do mixed stainless/carbon San Mai construction.
 
Willie71 said:
May I ask why you want to use m390 as an inlay instead of any number of cheaper steels to use as an inlay? 410, 416, or 420 would be less problematic to weld, and cheaper.
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Slicing and cutting. I need best edge retention I can get. Otherwise I would use 440c. I know 390 is a pain to work with and wears out belts.
 
BigMac28 said:
Slicing and cutting. I need best edge retention I can get. Otherwise I would use 440c. I know 390 is a pain to work with and wears out belts.
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M390 need long soak/20-30 min./ on 2010-2100F.1095 and 15N20 on that temperature and time would make grain to look like ball for ball bearing .....big one :)
 
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I have used CTS 204P used as the center of a Stainless damascus clad san mai from Chad Nichols' Also I see that Dion Damascus uses it on occasion for san mai. CTS-204P = M390, so I don't see why it wouldn't work, with the right tools and process.
 
navman said:
I have used CTS 204P used as the center of a Stainless damascus clad san mai from Chad Nichols' Also I see that Dion Damascus uses it on occasion for san mai. CTS-204P = M390, so I don't see why it wouldn't work, with the right tools and process.
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navman , he want to use carbon steel damascus from 1095/15N20 with M390 ........
 
tracking....I think Dion Damascus was using carbon damascus as a cladding on the 204P, but I could be wrong.
 
Just checked...they use 1095/420 as the outer layer of their san mai billets.
 
I read the question wrong. I now see he is making san-mai.

The new answer is NO. It would not work.

You would need to use metals that will all HT together if the M390 steel is the be the core. M390 has to be heated to around 2050° to 2100°F and held for 30 minutes. That would likely destroy your non-stainless damascus sides with massive grain.
 
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