Designation: A — 05€* This specification is under the jurisdiction of ASTM Committee A01 Provided by IMS under license with ASTM. The ASTM A passivation standard ensures high quality results for passivated stainless steel. Learn how Able Electropolishing meets these standards. Buy ASTM A /AM: SPECIFICATION FOR CHEMICAL PASSIVATION TREATMENTS FOR STAINLESS STEEL PARTS from SAI.
|Published (Last):||24 October 2009|
|PDF File Size:||11.4 Mb|
|ePub File Size:||13.4 Mb|
|Price:||Free* [*Free Regsitration Required]|
ASTM A – 05 Standard Specification for Chemical Passivation Treatments for Stainless Steel Parts
When electrochemical cleaning is required, it shall be performed in accordance with Practice B The formation of a dark blue color within 30 s denotes the presence of metallic iron. NOTE 1—The selection of medium and procedures for a neutralization depends of the chemistry of the passivation and on economic considerations.
Originally approved in These tests include the following practices: The effectiveness of a particular treatment for a particular grade of stainless steel in a particular application is demonstrated by meeting the speci?
Precision Machining Technology Show. The SI units given in parentheses are for information only. It is especially useful for large parts that have been uniformly cleaned but that are inconvenient for reasons of size of equipment or ease of handling of the part to place satm the environments de?
Last previous edition approved in as A — 01e1. It makes no recommendations regarding the suitability of any grade, treatment, or acceptance criteria for any particular application or class a67 applications.
The presence of exogenous surface contamination, including dirt, grease, free iron from contact with steel tooling, and so forth, may interfere with the formation of the passive?
ASTM A967 Passivation Standard
Such treatments may include astk applying an electrical potential on the stainless steel parts, as in the case of electropolishing. Rejection and Retest Stainless steel passivation performed to the ASTM A standards meets these standards by wstm tests that confirm its effectiveness, particularly as it pertains to removing free iron from the cold-worked surfaces. The surface of stainless steel that has been pickled is free of scale, free iron, and 005 foreign matter, and does not require a separate treatment for passivation as de?
Practice F—Free Iron Test The cleaning of these contaminants from the stainless steel surface will facilitate the spontaneous passivation by allowing the oxygen uniform access to the surface.
Chemical passivation removes free iron and other surface contaminants from stainless steel parts, improving corrosion resistance. The effectiveness of any passivation treatment is demonstrated by the parts meeting the speci?
NOTE 2—Some of the tests may produce positive indications not associated with the presence of free iron on the stainless steel surface. Practice A—Water Immersion Test Gain access to the technologies and people in aerospace and defense manufacturing. It includes recommendations and precautions for descaling, cleaning, and passivation of stainless steel parts. This standard does not purport to address all of the safety concerns, if any, associated with its use.
A number in parentheses indicates the year of last reapproval. The cloth pad used shall be used for only one such test, being changed for each test so as to avoid risk of contamination.
The processor is not required to reveal the precise composition of proprietary chemical mixtures but shall maintain a unique identi? The ASTM provides instructions and acceptance criteria for these and other tests that can verify the quality of a stainless steel passivation operation.
The passivation process de? AeroDef April 30 – May 1 Gain access to the technologies and people in aerospace and defense manufacturing. The cloth shall be in contact with the steel for an area of at least 20 square inches cm2.
Practice C—Salt Spray Test A — 05 Standard Speci? If you feel that your comments have not received a fair hearing you should make your views known to the A97 Committee on Standards, at the address shown below.
Active view current version of standard.
It includes several alternative tests, with acceptance criteria, for con? At the end of this period, the surface shall be carefully rinsed and dried with care taken not to disturb copper deposits if present. Precision and Bias ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard.
An example would be application of Practice C on some lesser-alloyed martensitic or ferritic stainless steels.
ASTM A Passivation Standards | Passivated Stainless Steel Parts
Not all of the following tests are suitable for all grades of stainless steel. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory axtm prior to use.
After removal of the cloth pad, the surface of the part shall be allowed to dry in air before inspection.
The number of samples tested from a lot subject to retest shall be twice the original speci?