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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Chemical passivation removes free iron and other surface contaminants from stainless steel parts, improving corrosion resistance. May 15 — 16, Boston, MA.
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? Such records shall be available for inspection when speci? 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.
The surface of stainless steel that has been pickled is free of scale, free iron, and exogenous foreign matter, and asstm not require a separate treatment sstm passivation as de?
These ASTM-approved tests may include:.
ASTM A967 Passivation Standard
A number in parentheses indicates the year of last reapproval. The ASTM provides instructions and acceptance criteria for these and other tests that can verify the quality of a stainless steel passivation operation. 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. Materials and Preparation for Passivation Treatments 5.
NOTE 1—The selection of medium and procedures for a neutralization depends of the chemistry of the passivation and on economic considerations. The SI units given in parentheses are for information only. Treatments in Citric Acid 7.
The processor is not required to reveal the precise composition of proprietary chemical mixtures but shall maintain a unique identi? 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?
When electrochemical cleaning is required, it shall be performed in accordance with Practice B AeroDef April 30 – May 1 Gain access to the technologies and people in aerospace and defense manufacturing.
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.
It includes recommendations and precautions for descaling, cleaning, and passivation of stainless steel parts. Practice F—Free Iron Test The number of samples tested from a lot subject to retest shall be twice the original speci? Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility. This cycle shall be repeated a minimum of twelve times. Statements regarding chemical treatments, unless otherwise speci?
The pad shall be maintained wet through the test period, either by a method of retarding external evaporation, by the further addition of potable water, or by backing the pad with a sponge or similar water source.
The effectiveness of a particular treatment for a particular grade of stainless steel in a particular application is demonstrated by meeting the speci? If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below.
Not all of the following tests are suitable for all grades of stainless steel. This condition may be prevented by chemically treating the parts to remove the iron particles or other foreign particles, and then allowing the passive? 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.
ASTM A – 05 Standard Specification for Chemical Passivation Treatments for Stainless Steel Parts
The cloth shall be in contact with the steel for an area of at least 20 square inches cm2. These tests include the following practices: All asstm must pass the speci? These tests include the following practices: Last previous edition approved in as A — 01e1. The suitability of atsm passivation treatments for use in 3 meeting the requirements of this speci? Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.
Treatments in Nitric Acid Solutions 6. Determination of the suitability of this speci?
Precision a67 Bias 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. It makes no recommendations regarding the suitability of any grade, treatment, or acceptance criteria for any particular application or class of applications.
Rejection and Retest Appendix X1 gives some nonmandatory information and provides some general guidelines regarding the selection of passivation treatment appropriate to particular grades of stainless steel.
Immersion bath to be controlled at a pH of 1. Such treatments may include externally applying an electrical potential on the stainless steel parts, as in the case of electropolishing.