ASTM A967-05 PDF

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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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. This standard does not purport to address all of the safety concerns, if any, associated with its use.

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? QQ-PC, but also includes a number of alternative passivation treatments. It makes no recommendations regarding the suitability of any grade, treatment, or acceptance criteria for any particular application or class of applications.

Materials and Preparation for Passivation Treatments 5. May 15 — 16, Boston, MA. This standard does not aastm to address all of the safety concerns, if any, associated with its use.

The SI units given in parentheses are for information only. The SI units given in parentheses are for information only. The formation of a dark blue color within 30 s denotes the presence of metallic iron.

Lot, Frequency of Testing, and Selection of Test 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. Active view current version of standard. Not all a97-05 the following tests are suitable for all grades of stainless steel. Cleaning by mechanical methods or other chemical methods is recommended. Appendix X1 gives some nonmandatory information and provides some general guidelines regarding the selection of passivation treatment appropriate to particular grades of stainless steel.

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Treatments in Citric Acid 7. 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. An example of a medium that serves to accelerate the formation of the passive?

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. 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 wstm.

ASTM A967 Passivation Standard

The suitability of such passivation treatments for use in 3 meeting the requirements of this speci? Such treatments may include externally applying an electrical potential on the stainless steel parts, as in the case of electropolishing. The ASTM provides instructions and acceptance criteria for these and other tests that can verify the quality of a stainless steel passivation operation. The cleaning of these contaminants from the stainless steel surface will facilitate the spontaneous passivation by allowing the oxygen uniform access to the surface.

These particles must be removed or they will appear as rust or stain spots. Such records shall be available for inspection when speci? Precision Machining Technology Show.

ASTM A Passivation Standards | Passivated Stainless Steel Parts

Precision and Bias The test solution shall be mixed fresh on the day of the test. A rejected lot may, at the option of the processor, be zstm, with or without re-pretreatment, and then be retested. Current edition approved Sept. At the end of this period, the surface shall be carefully rinsed and dried with care taken not to disturb copper deposits if present.

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Rinsing can be accomplished by a combination of stagnant, countercurrent or spray rinses, or both, prior to?

A — 05 Standard 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. It includes recommendations and precautions for descaling, cleaning, and passivation of stainless steel parts.

This test shall not be applied to parts to be used in food processing. Stainless Steel Passivation and More Able Electropolishing provides asrm 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. Practice B—High Humidity Test The cloth pad used shall be used for only one such test, being changed for each test so as to avoid risk of contamination.

Treatments in Nitric Acid Solutions 6. This condition may be prevented by chemically treating the parts to remove the iron particles or a967-005 foreign particles, and then allowing the passive? 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 International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. These tests include the following practices:.