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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Such treatments may include externally applying an electrical potential on the stainless steel parts, as in the case of electropolishing. It includes several alternative tests, with acceptance criteria, for con? The effectiveness of any passivation treatment is demonstrated by the parts meeting the speci?
This test shall not be applied to parts to be used in food processing.
NOTE 1—The selection of medium and procedures for a neutralization depends of the chemistry of the passivation and on economic considerations. An example would be application of Practice C on some lesser-alloyed martensitic or ferritic stainless steels. Lot, Frequency of Testing, and Selection of Test Appendix X1 gives some nonmandatory information and provides some general guidelines regarding the selection of passivation treatment appropriate to particular grades of stainless steel.
Practice D—Copper Sulfate Test 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 ASTM-approved tests may include:. The standards that collectively make up the ASTM A passivation specification ensure that nitric and citric stainless steel passivation is performed properly and with quality results.
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.
Current edition approved Sept. A superscript epsilon e indicates an editorial change since the last revision or reapproval. Treatments in Nitric Acid Solutions 6. FebAnaheim, CA. The parts shall then be thoroughly dried. Practice F—Free Iron Test Active view current version of standard.
This cycle shall be repeated a minimum of twelve times. 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?
Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.
ASTM A967 Passivation Standard
Astj to Active This link will always route to the current Active version of the standard. Attention shall be given to maintaining adequate volume, concentration, purity, and temperature control appropriate to the size and amount of stainless steel to be treated. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every?
It makes no recommendations regarding the suitability of any grade, treatment, or acceptance criteria for any particular application or class of applications. A rejected lot may, at the option of the processor, be re-passivated, with or without re-pretreatment, and then be retested.
It includes recommendations and precautions for descaling, cleaning, and passivation of stainless steel parts. Immersion bath to be controlled at a pH of 1. When electrochemical cleaning is required, it shall be performed in accordance with Practice B Last previous edition approved in as A — 01e1.
Rinsing can be accomplished by a combination of stagnant, countercurrent or spray rinses, or both, prior to? AeroDef April 30 – May 1 Gain access to the technologies and people in aerospace and defense manufacturing. These tests include the following practices: Qstm is especially useful for large parts that have been uniformly cleaned but that are inconvenient for reasons adtm size of equipment or ease of handling of the part to place in the environments de?
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.
ASTM A Passivation Standards | Passivated Stainless Steel Parts
This standard does not purport to address all of the safety concerns, if any, associated with its use. Originally approved in May 15 — 16, Boston, MA. Not all of the following tests are suitable for all grades of stainless steel.
Appendix X1 gives some nonmandatory information and provides some general guidelines regarding the selection of passivation treatment appropriate to particular grades of stainless steel.
The ASTM provides instructions and acceptance criteria for these and other tests that can verify the quality of a stainless steel passivation operation.
NOTE 2—Some of the tests may produce positive indications not associated with the presence of free iron on the stainless steel surface. These particles must be removed or they will appear as rust or stain spots.
Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.