ASTM B is the most widely adopted standard for salt spray testing. This standard is issued under the fixed designation B; the number 2 For referenced ASTM standards, visit the ASTM website, , or. Anybody could tell me what’s ” ASTM B [link by ed. to spec at TechStreet] SALT SPRAY TESTING” for zinc coating? What’s the specification for testing?.
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In either case, the exposure to salt spray may be salt water spray or synthetic sea water prepared in accordance with the requirements of the test standard. This test can be used to test the relative resistance to corrosion paints on steelwhen exposed to a changing climate of dilute salt spray at h117 temperature, followed by air drying at and elevated temperature. 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.
Thanks to all who answered concerning my question.
Second of three simultaneous responses — A. Testing cabinets are manufactured according to the specified requirements here. The salt fog fall-out rate is verified by using a minimum of two 80cm 2 funnels per salt spray atomiser, each inserted into a measuring cylinder graduated in ml. Other test solutions have other chemicals added including acetic acid often abbreviated to ASS and acetic acid with copper chloride often abbreviated to CASS each one chosen for the evaluation of decorative coatings, such as electroplated copper-nickel-chromium, electroplated copper-nickel or anodized aluminum.
Although there may be a weak correlation between the duration in salt spray test and the expected life of a coating in certain coatings such as hot dip galvanized steelthis test has gained worldwide popularity due to low cost and quick results. The salt spray test has little application in predicting how materials or surface coatings will resist corrosion in the real-world, because it does not create, replicate or accelerate real-world corrosive conditions.
Can you explain ASTM B 117-90 salt spray (fog) testing?
This is followed by 2. This is followed by 0. March 16, A. I really appreciate all help from all of you.
In reference to Bill’s reply. But which, is any, accelerated test is appropriate depends on what the finish is, and what you hope to test against.
However, these testing standards neither provide information of testing periods for the coatings to be evaluated, nor the appearance of corrosion products in form of salts. I’ll really appreciate your help Such tests are commonly referred to as modified salt spray tests. The suffix to the main standard number indicates the year of publication. Any Astj standard is available for this Testing?
This is considered an out of date browser. ASTM G85 is the most popular global test standard covering modified salt spray tests. George Gorecki – Naperville, Illinois A. Hi Rodney, There really aren’t many visual aids to help with this fog test not that I know of at least.
Test duration depends on the corrosion resistance of the coating; generally, the more corrosion resistant the coating is, the longer the period of testing before the appearance of oxides. If there is a minimum volume required by a particular salt spray test standard, this will be clearly stated and should be complied with.
It performs poorly because real world protection by galvanizing nnorma upon the formation of tough zinc carbonate corrosion products which develop in the open air as the result of interaction with carbon dioxide, but cannot develop in a closed chamber.
This is followed by 1.
ASTM B | Standards | Ascott Analytical
Third of three simultaneous responses — A. I would expect 10 hours per day to be more severe because the parts will be in the test chamber for 2. I suggest to obtain a copy of the standard; you will asttm the answers to your questions there.
What is typical acceptance criteria for salt spray testing. Electroplated zinc-nickel steel parts can last more than hours in NSS test without red rust or 48 hours in CASS test without red rust Requirements are established in test duration hours and coatings shall comply with minimum testing periods.