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Source for 416 Square Stock (other than McMaster)

TheBigLebowski

Aluminum
Joined
Sep 9, 2018
Does anyone know of a supplier that carries 416ss annealed square stock, either 1 1/4" oversized or 1 3/8"? My go to suppliers don't have anything of the sort.

I see McMaster-Carr carries some but the price seems pretty high even by their standards.

These parts were previously being made from mild steel. I have done them this way several times. They have 8 4-40 tapped holes in them, I was also ganging them up on a surface grinder to finish the height (not critical) and get a surface finish, this would make 416 preferable to 303 as its magnetic and easier to machine.
 

FredC

Titanium
Joined
Oct 29, 2010
Location
Dewees Texas
In case you do not know 416 heat treated to 26 to 36RC machines easier and finishes nicer than annealed. Still may be hard to find in square. Climb milling finish will be about the same as ground finish.
 

TheBigLebowski

Aluminum
Joined
Sep 9, 2018
In case you do not know 416 heat treated to 26 to 36RC machines easier and finishes nicer than annealed. Still may be hard to find in square. Climb milling finish will be about the same as ground finish.

Good info. I assumed annealed material would be easier to form tap (I have had problems with them breaking with material in the 34-36rc range)
 

Goff

Aluminum
Joined
Dec 16, 2007
Location
CA, USA
A slightly off track comment. As a general rule 32RC is the max for form tapping per Balax. I form tap M2.5 in 15-5 ss, H1025, 32RC successfully.
 

FredC

Titanium
Joined
Oct 29, 2010
Location
Dewees Texas
26 to 32RC is a lot common but I can not remember if I have form tapped it. The 32-36 was special from Carpenter not hardly stocked now and mill runs for me are out of the question anymore.
 

TheBigLebowski

Aluminum
Joined
Sep 9, 2018
TheBigLebowski: what length do you need? I have a bunch of 416SS that I am not using.

Approximately 6Ft. The problem is that it will be a repeat job so I have to be able to get the material again in the future. I am probably going to have to go with 303.
 








 
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