The ASTM A passivation standard ensures high quality results for passivated stainless steel. Learn how Able Electropolishing meets these standards. 35A, AMS C, ASTM A and ASTM A standards. Passivation alone will not remove heavy adherent oxide films created from heat treatment. Delstar Metal Finishing offers passivation services that meet the ASTM (American Society for Testing and Materials) A standards. The ASTM A standards.
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I replied that the parameters are in compliance with standard A but he’s telling that we don’t have objective evidence to support the validation since A defines minimum requirements that could be insufficient to my process. The ASTM A passivation standard applies to the cleaning, passivation and testing of stainless steel parts.
It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. December 19, A. It helps to guard a9677 the elementary forces of the environment into which the component will function in. ASTM A renumbered those to nitric 1 through 4, while AMS brought back the ones that had been removed and has types 1 through 8.
We appended your question to a thread which should clearly answer it for you: What is standard to you may not be standard to them. You can guess the increase in the amount of testing involved. Is there any clear direction or is it optional?
ASTM A vs. AMS vs. ASTM F86? Which is the right passivation spec?
This is actually an oversight of A that will be corrected in the next revision. At its basis, the intent of this specification is to ensure that metal finishing shop uses either citric or nitric passivation correctly to produce quality results.
They also are very specific on such aspects as recommendations and precautions for such things as cleaning, descaling and tests. If so, how could I support that statement?
Lee Kremer has pointed out that A is not a Specification, only a Practice. Referenced Documents purchase separately The documents listed below are referenced a9677 the subject standard but are not provided as part of the standard.
Do the parameters in A cover any worst case scenario? I assume that A was developed running several extreme conditions but I’ve been looking for that information and couldn’t find anything about it. Ray Kremer Stellar Solutions, Inc. These ASTM-approved tests may include: Free iron denotes iron present on the surface of the parts, including but not limited to iron contamination, iron-tool marks, residual-iron salts from pickling solutions, iron dust, atmospheric exposure, iron deposits in welds, embedded iron, and iron oxide.
ASTM A [link by ed. The 3 consensus specifications used at this time, and asm should be used for all specifications of passivation are:. Stainless Steel Passivation and More Able Electropolishing provides asttm passivation services that meet the ASTM A standards, as well as other finishing treatments that improve the corrosion resistance of stainless steel and various other alloys.
Method 1 is subdivided into 8 Types corresponding to the types in old QQ-P while Method 2 is not subdivided.
By meeting standards set by the ASTM and other organizations, we can ensure consistently-high quality for a broad range of metal parts across many industries. Copper sulfate testing Damp Cloth Test High humidity testing Potassium Ferricyanide—Nitric Acid Test Salt spray testing Water immersion testing The instructions for conducting such tests as well as the acceptable results are also provided.
If you do not specify, they can use whatever they want, even ways that are not in any of the specifications! Is one better than another for medical devices? The approach involves several steps. To me this means volume percent of pure nitric acid, resulting in significantly stronger passivation solutions than AMS What should I tell my customer? Both contain a carryover of QQ-PC with the addition of the more recently developed citric acid based process.
ASTM A967 Passivation Standard
March 7, A. The tests the ASTM document considers valid are the following:. The passivated parts shall exhibit a chemically clean surface and shall, on visual xstm, show no etching, pitting, or frosting.