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.
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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.
This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? An example would be application of Practice C on some lesser-alloyed martensitic or ferritic stainless steels. This test shall not be applied to parts to be used in food processing.
Materials and Preparation for Passivation Treatments 5. Individual reprints single or multiple copies of this standard may be obtained by 005 ASTM at the above address or at phonefaxor service astm.
ASTM A967 Passivation Standard
Immersion bath to be controlled at a pH of 1. This standard does not purport to address all of the safety concerns, if any, associated with its use.
Active view current version of standard. The cloth pad used shall be used for only one such test, being changed for each test so as to avoid risk of contamination. It includes recommendations and precautions for descaling, cleaning, and passivation of stainless steel parts. This cycle shall be repeated a minimum of twelve atsm. The number of samples tested from a lot subject to retest shall be twice the original speci?
Treatments in Nitric Acid Solutions 6. 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 in the environments de? When electrochemical cleaning is required, it shall be performed in axtm with Practice B Originally approved in By meeting standards set by the ASTM and other organizations, we can ensure consistently-high zstm for a broad range of metal parts across many industries.
NOTE 2—Some of the tests may produce positive indications not associated with the presence of free iron on the stainless steel surface. NOTE 1—The selection of medium and procedures for a neutralization depends of the chemistry of the passivation and on economic considerations. A rejected lot may, at the option of the processor, be re-passivated, with or without re-pretreatment, and then be retested.
These tests include the following practices:. The cloth shall be in contact with the steel for an area of at least 20 square inches cm2.
ASTM A Passivation Standards | Passivated Stainless Steel Parts
Minor changes have been made in the text to facilitate references to the main document and to correct technical inaccuracies. Stainless Steel Passivation and More 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.
These particles must be removed or they will appear as rust or stain spots.
It makes no recommendations regarding the suitability of any grade, treatment, or acceptance criteria for any particular application or class of applications. ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard.
asstm Precision Machining Technology Show. The SI units given in parentheses are for information only. Determination of the suitability of this speci? Appendix X1 gives some nonmandatory information and provides some general guidelines regarding the selection of passivation treatment appropriate to particular grades of stainless steel.
ASTM A – 05 Standard Specification for Chemical Passivation Treatments for Stainless Steel Parts
These ASTM-approved tests may include:. These tests include the following practices: Stainless steel passivation performed to the ASTM A standards meets these standards by passing tests that confirm its effectiveness, particularly as it pertains to removing free iron from the cold-worked surfaces. Practice F—Free Iron Test This test is not recommended for detection of free iron on ferritic or martensitic series stainless steels, because these steels will give a positive indication irrespective of the presence or absence of anodic surface contaminants.
The passivation process de? This condition may be prevented by chemically treating the parts to remove the iron particles or other foreign particles, and then allowing the passive?
Link to Active This link will always route to the current Active version of the standard. The surface of stainless steel resulting from these treatments is free of scale, free iron, and exogenous foreign matter, and does not require a separate treatment for passivation as de? A superscript epsilon e indicates an editorial change since the last revision or reapproval. Rejection and Retest Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters.
Last previous edition approved in as A — 01e1. Practice B—High Humidity Test Rinsing can be accomplished by a combination of stagnant, countercurrent or spray rinses, or both, prior to?
Precision and Bias