ASTM B The ASTM B Copper-Accelerated Acetic Acid Salt Spray, ( CASS) Test This test is performed in accordance with the specifications found in the. ASTM B Copper Accelerated Acetic Acid Salt Spray (Fog) Testing. Can be used to test the relative resistance to corrosion of anodized aluminium and. Testing Specifications of Cyclic Cycles we have met – ASTM, ASTM B, ASTM B, CASS, ASTM G85, GMW, GMW, SAE J, Ford CETP.
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Touchstone has laboratory tested both coupons and entire components for automotive, aerospace, and other industries. You appear to be acknowledging that there is no correlation, but then asking whether the correlation would be Our customer loyalty program offers additional savings on our environmental testing services to certain customers.
In asrm salt spray chamber these carbonate reaction products never form, and the zinc corrodes away rather quickly. First a side note ast, CASS. None of our competition has built their company on the impressive credentials we have.
According to him, CASS was used for chrome plated bumpers. Should we consider that a failure? If you’re trying to mimic some field failure, you’re talking completely different corrosion mechanisms Touchstone performs corrosion testing and accelerated life testing of virtually any material or device.
Any opinions or thoughts would be appreciated.
How to compare ASTM B Salt Spray and ASTM B CASS Test?
That said, you generally cannot correlate accelerated tests to tests such as NSS for numerous reasons. Organic and other samples with nonmetallic coatings are not cleaned.
You appear to be acknowledging that there is no correlation, but then asking whether the correlation would be Such tests are also often erroneously used as predictors of real life, despite the fact that the corrosion mechanisms are fundamentally different, and the approach will lead to erroneous expectations.
So my question is whether there is any specific requirement of CASS test for threaded, knurled area? For example, hot dip galvanizing is no doubt the most durable of any finish, often surviving on electrical transmission towers for 75 years or more with no maintenance. Touchstone performs corrosion testing and accelerated life testing of virtually any material or device. An ongoing discussion from through Are these parts stainless steel, or a non-ferrous alloy perhaps? It was a blast from the past hearing from you: Some automotive fuel components have this type of plating and CASS testing.
How to compare ASTM B117 Salt Spray and ASTM B368 CASS Test?
For more specific safety precautionary information see 8. We thank you for help.
We are plating ABS with 20 microns of copper, 10 microns semi-bright nickel, 10 satm of bright nickel, 2 microns of micro porous nickel and finally 0,15 microns of conventional chromium coating.
It will give you a different corrosion mechanism.
How can we help? This assumes, of course, that you’re running the test purely as a quality assurance test to make sure your process is running the same sample to sample. Should we consider the aatm having failed the CASS TEST when pits appear in chromium layer or when the pits have crossed the nickel layer and copper appears? It is also applicable to the testing of anodized aluminum.
If it is, what should we do? I am just looking to see if anyone has an opinion on this question. Reagent grade copper chloride dihydrate is then added at a rate of 1 gram to 4 litres of salt solution.
Accelerated corrosion testing is a QA measure often undertaken to get an early indication if something goes out of whack in the processing, such that the components are unlikely to survive the previously expected period in the real world. In either application, certain variations in the test procedures for different substrates and coatings may improve their predictive value.
Organic and other samples with nonmetallic coatings are not cleaned.