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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It is also applicable to the testing of anodized aluminum. Touchstone has b638 tested both coupons and entire components for automotive, aerospace, and other industries. In either application, certain variations in the test procedures for different substrates and coatings may improve their predictive value.
Salt cabinets assuming they’re run properly, which is generally not true also have a great deal of variation that makes any correlation, in my opinion, greatly suspect.
There are probably some blurry areas, as there always are. Link to Active This link will always route to the current Active version of the standard. We manufacture parts for mostly military end use. I talked to a guy who worked on the test, and he told me that they eventually determined that hours in CASS meant 1 year in Detroit’s environment in the 50s or 60s.
They all induce different corrosion mechanisms on different substrates.
How to compare ASTM B117 Salt Spray and ASTM B368 CASS Test?
b3668 If they only require that the non-knurled areas pass CASS, then you should be fine. Ray Kremer Stellar Solutions, Inc. So my question is whether there is any specific requirement of Aetm test for threaded, knurled area? While developing correlation is important, trying to develop a predictive correlation that doesn’t require real world testing probably won’t work.
Pankaj, I doubt the standard gets that specific, it is probably more a matter to discuss with your customer. From beautiful Pine Beach New Jersey: The suitability of this test and correlation of results with service experience should be determined before it is specified for coating systems or materials other than those mentioned in this paragraph. This type of analysis asym be better suited to research or an initial validation.
Our parts generally are aluminum with Cad Plating over electroless nickel plating. Chrome plating is organic or inorganic? We are developing an alternative to Cadmium plating, and if there is a comparison that someone has done, it would be great to find the results of the comparison, i.
Typical exposure lengths in hours are: How can we help? Also known as the CASS test, this test is commonly used to evaluate paints on steel as well as to determine corrosion resistance of various aluminum alloys. Inorganic coatings are coatings that don’t contain significant amounts of organic chemicals. If it is, what should we do? It could be done, but would you want a manufacturing process that requires zstm microscopic analysis of test parts?
You appear to be acknowledging that there is no correlation, but then asking whether the correlation would be Should we consider that a failure?
No other units of measurement are included in this standard.
Are these parts stainless steel, or a non-ferrous alloy perhaps? First a side note about CASS. None of our competition has built their company on the impressive credentials we have.
It’s not possible to diagnose a finishing problem or the hazards of an operation via these pages. Pankaj, I doubt the standard ashm h368 specific, it is probably more a matter to discuss with your customer.
CASS Test — Copper-Accelerated Acetic Acid Salt Spray (Fog) Test — (ASTM B368, B117)
Should we consider that a failure? Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Touchstone Research Laboratory, Ltd.
The only way to accurately and reliably develop a correlation is to build one yourself.
How to compare ASTM B Salt Spray and ASTM B CASS Test?
Select from list below: Auto Sstm is also committed to its customers. If component resists hours B test, how many hours should it resist for B test? Organic and other samples with nonmetallic coatings are not cleaned. That is, put some parts in neutral salt spray and some in CASS and see what you get.