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Rifles, Reloading, Optics, Equipment
Gunsmithing
Sandblasted SS treatment afterwards??
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<blockquote data-quote="mrmax" data-source="post: 1907991" data-attributes="member: 85491"><p>YES all Stainless Steel "rust" . Its called pacification, its the ability of most stainless steels to 'oxidize' aka rust as you say to create a surface barrier to prevent corrosion . There are issues as which alloy is being used as most American barrels are 416R and some Europeans use 17-4 PH . I've seen Howa , Remington and Tikka's with external pits on actions and barrels . What this means is the metal became contaminated with solvents or a combination of solvents an powder nitrates to form what appears to be a nitric solution which causes corrosion . Simple point if you use SS guns or barrels keep them clean of solvents and powder fouling and oiled . I work on a lot of suppressor fitted guns in NZ and you would not believe the degree of pitting I see when the suppressors are left on the barrels, many completely destroyed . </p><p> As pointed out contaminated blasting media with iron oxide-rust will show up later , quite correct.</p></blockquote><p></p>
[QUOTE="mrmax, post: 1907991, member: 85491"] YES all Stainless Steel "rust" . Its called pacification, its the ability of most stainless steels to 'oxidize' aka rust as you say to create a surface barrier to prevent corrosion . There are issues as which alloy is being used as most American barrels are 416R and some Europeans use 17-4 PH . I've seen Howa , Remington and Tikka's with external pits on actions and barrels . What this means is the metal became contaminated with solvents or a combination of solvents an powder nitrates to form what appears to be a nitric solution which causes corrosion . Simple point if you use SS guns or barrels keep them clean of solvents and powder fouling and oiled . I work on a lot of suppressor fitted guns in NZ and you would not believe the degree of pitting I see when the suppressors are left on the barrels, many completely destroyed . As pointed out contaminated blasting media with iron oxide-rust will show up later , quite correct. [/QUOTE]
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Sandblasted SS treatment afterwards??
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