Designation: A – 05e1 ASTM Standards: 2 1 This specification is under the jurisdiction of ASTM Committee A01 on Steel. The ASTM A passivation standard ensures high quality results for passivated stainless steel. Learn how Able Electropolishing meets these standards. ASTM A – Designation: A – 05 Standard Speci?cation for Chemical Passivation Treatment.
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Practice D—Copper Sulfate Test Practice F—Free Iron Test Statements regarding chemical treatments, unless otherwise speci? ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. Rejection and Retest This standard does not purport to address all of the safety concerns, if any, associated with its use.
It includes several alternative tests, with acceptance criteria, for con? These tests include the following practices: 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. These particles must be removed or they will appear as rust or stain spots.
a97-05 Precision Machining Technology Show. At the end of this period, the surface shall be carefully rinsed and dried with care taken not to disturb copper deposits if present. 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.
June 11—13, Chicago, IL. 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. The number of samples tested from a lot subject to retest shall be twice the original 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. The SI units given in parentheses are for information only. Not all of the following tests are suitable for all grades of stainless steel.
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. Treatments in Citric Acid 7. A — 05 Standard Speci? Immersion bath to be controlled at a pH of 1. The passivation process de? 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.
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? It is recommended for detection of free iron on austenitic and series stainless steels. Such treatments, also sometimes called passivation in common usage, are designated as post-cleaning treatments in this speci? 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.
Lot, Frequency of Testing, and Selection of Test Materials and Preparation for Passivation Treatments 5. A number in parentheses indicates the year of last reapproval.
ASTM A – 05 Standard Specification for Chemical Passivation Treatments for 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 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. 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?
The cloth shall be in contact with the steel for an area of at least 20 square inches cm2. After removal of the cloth pad, the surface of the part shall be allowed to dry in air before inspection. The suitability of such passivation treatments for use in 3 meeting the requirements of this speci?
Chemical passivation removes free iron and other surface contaminants from stainless steel parts, improving corrosion resistance. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. It makes no recommendations regarding the suitability of any grade, treatment, or acceptance criteria for any particular application or class of applications.
Q967-05 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 adtm. The pad shall be maintained wet through the test period, either by a method of a9670-5 external evaporation, by the further addition of potable water, or by backing the pad with a sponge or similar water source. These ASTM-approved tests may include: Appendix X1 gives some nonmandatory information and provides some general guidelines regarding the selection of passivation treatment appropriate to particular grades of stainless steel.
Originally approved in 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? An example of a medium that serves to accelerate the formation of the passive?
An example would be application of Practice C on some lesser-alloyed martensitic or ferritic stainless steels. This cycle shall be repeated a minimum of twelve times.
ASTM A967 Passivation Standard
These tests include the following practices: A superscript epsilon e indicates an editorial change since the last revision or reapproval. Treatments in Nitric Acid Solutions 6.
Aatm of the suitability of this speci? This standard is subject to revision at any time by the responsible technical committee and must be reviewed every?