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ASTM B912-02(2018)
Standard Specification for Passivation of Stainless Steels Using Electropolishing
Přeložit název
NORMA vydána dne 1.10.2018
Informace o normě:
Označení normy: ASTM B912-02(2018)
Datum vydání normy: 1.10.2018
Kód zboží: NS-902643
Počet stran: 4
Přibližná hmotnost: 12 g (0.03 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM
Kategorie - podobné normy:
Povlaky a příslušné procesy používané v leteckém a kosmickém průmyslu
Anotace textu normy ASTM B912-02(2018) :
This specification covers the passivation by electropolishing of stainless steel alloys in the 200, 300, and 400 series, as well as precipitation-hardened alloys. Basis materials shall be free of clearly visible defects, and if necessary, shall undergo preparatory cleaning procedures prior to electropolishing. Post-coating procedures such as post dip and final rinsing shall be performed as well. The performance of the specimens during passivation shall be evaluated by one or more of the following procedures: water immersion test; humidity test; salt spray test; copper sulfate test; and modified ferroxyl test for free iron.
Keywords:
electropolishing, passivation, stainless steel,, ICS Number Code 49.040 (Coatings and related processes used in aerospace industry)
Doplňující informace
| 1. Scope | ||||||||||||||||||||||
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1.1 This specification covers the passivation of stainless steel alloys in the 200 (UNS2XXXX), 300 (UNS3XXXX), and 400 (UNS4XXXX) series, and the precipitation-hardened alloys, using electropolishing procedures. Note 1: Surface passivation occurs simultaneously with
electropolishing under proper operating conditions. The quality of
passivation will depend on the type of stainless steel, the
formulation of the electropolishing solution, and the conditions of
operation. Free iron on the surface of the stainless steel is
removed resulting in improved corrosion resistance. Surface
smoothing obtained by electropolishing will also improve corrosion
resistance. Electropolishing will also remove heat tint and oxide
scale.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.3 This specification may involve hazardous materials, operations, and equipment. This specification does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. |
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| 2. Referenced Documents | ||||||||||||||||||||||
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