Standards and Technical Documents from ASTM International Specification for Chemical Passivation Treatments for Stainless Steel Parts — ASTM Ae2. ASTM Ae2 – Standard Specification for Chemical Passivation. 2 1 ASTM Standards 2 A Practice for Cleaning, Descaling, A–05e1 2 6 1 1 4 . Historical Standard: ASTM Ae2 Standard Specification for Chemical Passivation Treatments for Stainless Steel Parts. SUPERSEDED (see Active link, .
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Passivation of stainless steel for harsh environment
Discussion in ‘ Surface finishes ‘ started by aknotleyMar 26, Passivation of stainless steel for harsh environment Discussion in ‘ Surface finishes ‘ started by aknotleyMar 26, AknotleyWe made Stainless steel grade SUS for a stamping metal before, that be used in mobile telephone.
It is required to atm a specified number of “hours to failures” in the salt spray test. For “grade” of passivation, you could use the salt spray test. Through the years, there have been some new twists added to better simulate special environmental conditions, but the most common procedure by far is the test as described in ASTM B Standard Practice for Operating Salt Spray Apparatus.
Hope it would be helpful for you. LiMaoxingMar 27, AK, I made a biomass stove i.
I had the outside powder coated to give it a nice appearance and the innerwall was native cold rolled SS sheet. Within a few days, I noticed corrosion on the inner wall.
As a result we never progressed beyond the prototype.
About that time BP released a fan based biomass stove, where they supplied processed pellets which burnt cleanly under forced air from the fan. No corrosion issue there on a similar material, possibly with no passivation.
I’d be interested in knowing what passivation processes you are using and if they can take high temperatures as well. ASTM A 05e2 http: Most “Plating Vendors” have copies so work with them to find or develop what will meet your specific needs. Also, consider for these more harsh requirements.
If applicable, the longer life you’ll get from will more than offset the cost delta. LinkedIn GopherNov 5, First aatm all it depends on what kind of harsh environment, but generally you wouldnt use stainless, you would use L and it would be electropolished.
Passivation of stainless steel for harsh environment | EngineeringClicks
We use a company called Anapol based in digbeth, Birmingham, www. The electropolishing leaves the surface with a chromium rich content which is inert and therefore passive. Phone and ask for advice, but make sure you know the type of hazard in the environment.
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