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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Able Electropolishing provides metal 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. Passivation is the overlaying of a substrate or base layer with another metal. What should I tell my customer?
ASTM A967 Passivation Standard
As you see, we added your question to a thread which already answers it. March 7, A.
Historical Version s – view previous versions of standard. Is there any clear direction or is it optional? A free ast, test shall be used for the detection of zstm iron on the surface of stainless steel. We design our own parts, and do our own passivation in house, and hence prefer the testing requirements of ASTM A It’s not possible to diagnose a finishing problem or the hazards of an operation via these pages.
ASTM A Standard Passivation Treatment For Stainless Steel
Regards, Ted Mooney, P. Is your business surgical implants, or are you with a passivation shop, or what? FebAnaheim, CA. A is a standard covering treatments to passivate stainless steel regardless of what it will be used for and then test methods to show that it was passivated.
October atsm, A. July 6, A. You can guess the increase in the amount of testing involved. What is standard to you may not be standard to them.
These ASTM-approved tests may include:. Always specify exactly what you want– e. And there are other differences. The intent is to remove any foreign or undesirable traits and improve the corrosion resistance of the stainless steel component. The chemical reactions of the passivating media on the surface of the stainless steel shall be stopped by rinsing of the stainless steel part, with or without a separate neutralization treatment.
Jan, Both standards are based heavily on the old QQ-P This auditor you are dealing with, what organization is he with? Some customers ask for the parts to pass salt spray testing longer than A’s required 2 hours, etc.
Thank you for your hard work which the finishing world continues to benefit from. This is actually an oversight of Asrm that will be corrected in the next revision.
All information presented is for general reference and does not represent a professional opinion nor the policy of an author’s employer.
ASTM A967 vs. AMS 2700? Which is the right passivation spec?
December 19, A. Astn tests the ASTM document considers valid are the following: 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.
QQ-PB contained six nitric acid bath Types.
The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. The ASTM has established certain criterion 9a67 achieve consistent product quality in the metal finishing industry.
If the part passes the verification test, what a96 in function can occur in the part’s use if differing acid baths are used? If you’re having it done for you, the testing is someone else’s problem, so you might consider AMS 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. Link to Active This link will always route to the current Active version of the standard.
In the S967 A and the nitric acid concentrations mentioned must be percentage by a67 of a reagent of 67 wt. Also, how common is it for a purchaser of a good to specify a specific passivation type in a standard rather than reference the entire standard and leave the type selection up to the manufacturer?
Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as zstm of the standard. The standards that collectively make up the ASTM Axtm passivation specification ensure that nitric and citric stainless steel passivation is performed properly and with quality results.
This abstract is a brief summary of the referenced standard. My customer wants to put A on his print for standard passivation, but my plater tells z967 that he passivates to A I was looking at this thread and had this question Ray, Thank you for answering. Immediately after the removal from the passivating solution, the parts shall be thoroughly rinsed, using stagnant, countercurrent, or spray washes, singly or in combination, with or without a separate chemical treatment for neutralization of the passivation media.
You should never ask for “standard passivation” on imports. Lee Kremer Stellar Solutions, Inc. Indeed also my conclusion is that it is an omission.