ISO 9227 NSS PDF

It also describes the method employed to evaluate the corrosivity of the test cabinet environment. It does not specify the dimensions or types of test specimens, the exposure period to be used for a particular product, or the interpretation of results. Such details are provided in the appropriate product specifications. The salt spray tests are particularly useful for detecting discontinuities, such as pores and other defects, in certain metallic, organic, anodic oxide and conversion coatings.

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We have a customer, that we supply some zinc electroplated mechanical components to. Is there any equivalence between this two standards? Hi Sergio, ASTM B does not address corrosion behavior of test specimens, but describes the parameters for conducting a salt spray test. So if you want to know how to set up a salt spray cabinet or how to make the salt solution, then B is a reference.

But benchmarking performance is something altogether different. I suggest that you send some parts out for testing according to the ISO standard to see if they meet the spec. George Gorecki - Naperville, Illinois A. Options include the following: 1. Something totally different like zinc-alloy plating, organic coatings, etc. A personal good afternoon to all, I am Jose of Curitiba, I am a painting inspector, I am a specialist in the area of Salt Spray, and have a problem and knowing of the competence of all readers in corrosion, perhaps they can help me.

I am needing to know if a gradual table of corrosion in assay exists of Salt Spray, if this table exists and if anyone would be able to post it, I will be thankful. Thanks a lot. Is it possible to reduce test duration by some accelerated Testing?

Any ISO standard is available for this Testing? Sagar R. March 16, A. Hi, Sagar. But which, is any, accelerated test is appropriate depends on what the finish is, and what you hope to test against. Remember that accelerated testing is not a proper indication of real world performance. Good luck.

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ISO 9227:2017

This produces a corrosive environment of dense salt water fog also referred to as a mist or spray in the chamber, so that test samples exposed to this environment are subjected to severely corrosive conditions. Chamber volumes vary from supplier to supplier. If there is a minimum volume required by a particular salt spray test standard, this will be clearly stated and should be complied with. There is a general historical consensus that larger chambers can provide a more homogeneous testing environment. Variations to the salt spray test solutions depend upon the materials to be tested.

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Salt spray test

The test duration is variable. The salt solution should be prepared according to the nature of the test in accordance with Paragraph 3 of ISO and the 3 options are summarised below; NSS Neutral Salt Spray - The pH of the salt solution fall-out should be maintained at a neutral pH pH 6. The salt fog fall-out rate is verified by using a minimum of two 80cm2 funnels per salt spray atomiser, each inserted into a measuring cylinder graduated in ml. These collectors are located inside the chamber, nominally at the same height as the test samples, one located close to the atomiser and one located away from the atomiser, in accordance with the positions specified in ASTM B, but also taking into account the chamber manufacturers defined work-space. Typical Application This test can be used to test the relative resistance to corrosion of coated and uncoated metallic specimens, when exposed to a salt spray climate at an elevated temperature.

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Equivalence between ASTM B-117 vs. ISO 9227 NSS

We have a customer, that we supply some zinc electroplated mechanical components to. Is there any equivalence between this two standards? Hi Sergio, ASTM B does not address corrosion behavior of test specimens, but describes the parameters for conducting a salt spray test. So if you want to know how to set up a salt spray cabinet or how to make the salt solution, then B is a reference.

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