Passivation of stainless steels – British Stainless Steel
Solution strengths of 4-10% citric acid are specified for passivation treatments in ASTM A967. Specifications for passivation treatments for stainless steels. Traditionally the American standards have been used. These include: – ASTM A380 – Practice for Cleaning, Descaling and Passivating of Stainless Steel Parts, Equipment and Systems
A967 Standard Specification for Chemical
Scope. 1.1 This specification covers several different types of chemical passivation treatments for stainless steel parts. It includes recommendations and precautions for descaling, cleaning, and passivation of stainless steel parts. It includes several alternative tests, with acceptance criteria, for confirmation of effectiveness of …
ASSIST-QuickSearch Document Details
Title: Chemical Passivation Treatments for Stainless Steel Parts (Replaced by ASTM-A967/A967M) Scope: This specification covers several different types of chemical passivation treatments for stainless steel parts. It includes recommendations and precautions for descaling, cleaning, and passivation of stainless steel parts. Status:
ASTM A967/A967M-13
1.6 The following precautionary caveat pertains only to the test method portions, Section 14 of this specification: This standard 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 and health practices and determine the applicability of regulatory …
ASTM A967-01
It includes recommendations and precautions for descaling, cleaning, and passivation of stainless steel parts. It includes several alternative tests, with acceptance criteria, for confirmation of effectiveness of such treatments for stainless steel parts. 1.2 Practices for the mechanical and chemical treatments of stainless steel surfaces are ...
Passivation of Aerospace Stainless Steel Parts with Citric …
One is a commercially available citric acid passivation solution that contains citric acid and cleaning compounds and meets ASTM A 967 (Citric 4), and the other two passivation solutions are Type II and Type VII from AMS-QQ-P-35. These AMS-QQ-P-35 solutions are used by the aerospace industry to passivate stainless steel parts.
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A717/A717M Standard Test Method for Surface
Scope. 1.1 This test method covers a means of testing the surface insulation resistivity of single strips or punchings of flat-rolled electrical steel under predetermined conditions of voltage, pressure, and temperature. 1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard.
ASTM A967/A967M-17
Full Description. 1.1 This specification covers several different types of chemical passivation treatments for stainless steel parts. It includes recommendations and precautions for descaling, cleaning, and passivation of stainless steel parts. It includes several alternative tests, with acceptance criteria, for confirmation of effectiveness of ...
ASTM A967/A967M-13
Standard Specification for Chemical Passivation Treatments for Stainless Steel Parts. 1.1 This specification covers several different types of chemical passivation treatments for stainless steel parts. It includes …
Overview of ASTM A380 – Industry Standard for Cleaning
The subsection of passivation directs the reader to both the spec's appendix and ASTM A967 for effective passivation chemistries. The appendix of ASTM A380 contains a table detailing pickling processes (Table A1.1) and passivation processes (Table A2.1), featuring time and temperature ranges plus chemical blends necessary to pickle or ...
ASTM A967/A967M-17
Full Description. 1.1 This specification covers several different types of chemical passivation treatments for stainless steel parts. It includes recommendations and precautions for descaling, cleaning, and …
Chemical Passivation Treatments for Stainless Steel Parts …
A967/A967M − 13 of free iron from the stainless steel surface would be an 14.1.2 The sample representing the lot of passivated parts aqueous solution of sodium dichromate. ... ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. Users of this ...
A967/A967M Standard Specification for Chemical
AbstractThis specification covers several different types of chemical passivation treatments for stainless steel parts. The treatments are the following: immersion treatment using nitric acid solutions, immersion treatment using citric acid solution, and
ASTM A967/A967M-13
Company: ASTM. Application: Chemical Passivation Treatments for Stainless Steel Parts via Nitric or Citric acid. Appearance: Varies. Plate Thickness: Nitric 1 – 20-25% nitric acid, 2.5% weight of …
Citric Acid Passivation of 15-5PH and 17-4PH Stainless Steel …
Materials used in this investigation were SS 304, 15-5PH, and 17-4PH whose chemical composition was determined by X-ray fluorescence. Preparation of the electrodes: each of the SS was prepared according to ASTM A380 [] in order to obtain a surface without harshness, after which a washing and rinsing was carried out to eliminate preparation …
ASTM A967/A967M : Standard Specification for Chemical …
ASTM A967/A967M, 2017 Edition, July 1, 2017 - Standard Specification for Chemical Passivation Treatments for Stainless Steel Parts This specification covers several different types of chemical passivation treatments for stainless steel parts. It includes recommendations and precautions for descaling, cleaning, and passivation of stainless …
Chemical Passivation Treatments for Stainless Steel Parts1
Designation: A967/A967M − 17 Standard Specification for Chemical Passivation Treatments for Stainless Steel Parts1 This standard is issued under the fixed …
ASTM A967, غیرفعالسازی سطوح استنلس | پارس اکتان
دانلود استاندارد ASTM A967 / A967M آخرین ویرایشهای جدید(استاندارد Passivation سطوح و اجزا استنلس استیل در صنایع )
Nitric Acid Passivation vs Citric Passivation for Stainless Steel …
Both nitric acid and citric acid are effective in passivating many grades of stainless steel, and both methods are described in detail in the industry standards ASTM A967 and AMS 2700. In the 1960s, the U.S. military defined the first specifications for passivation using nitric acid on stainless steel in the QQ-P-35 standard. Over time, however ...
ASTM A967-05
1.1 This specification covers several different types of chemical passivation treatments for stainless steel parts. It includes recommendations and precautions for descaling, cleaning, and passivation of stainless steel …
Norme ASTM A967/A967M-17
Normes remplacées (1) ASTM A967/A967M-13. février 2013. Norme Annulée. Standard Specification for Chemical Passivation Treatments for Stainless Steel Parts. 1.1 This specification covers several different types of chemical passivation treatments for stainless steel parts. It includes recommendations and precautions for descaling, cleaning ...
Passivation of Aerospace Stainless Steel Parts …
Chemical Passivation. The chemical treatment removing the free iron from the surface of stainless steel is called passivation. The chemical used is most commonly nitric acid (HNO 3 ), a highly corrosive …
ASTM A967/A967M : Standard Specification for …
ASTM A967/A967M, 2017 Edition, July 1, 2017 - Standard Specification for Chemical Passivation Treatments for Stainless Steel Parts. This specification covers …
A380/A380M Standard Practice for Cleaning
1.1 This practice covers recommendations and precautions for cleaning, descaling, and passivating of new stainless steel parts, assemblies, equipment, and installed systems. These recommendations are presented as procedures for guidance when it is recognized that for a particular service it is desired to remove surface contaminants that …
ASTM A967 Chemical Passivation Treatment for Stainless Steel
ASTM A967 Chemical Passivation Treatment for Stainless Steel. This covers several different types of chemical passivation treatment for stainless steel parts. The treatments …
Corrosion of Stainless Steel: Test Methods and Proper Expectations
Per ASTM A967 and A380, stainless parts are shown to be properly passivated if they resist corrosion in salt spray for just 2 hours. Stainless steel performs relatively poorly in salt spray because the constant exposure to a harsh environment rapidly erodes the passivation layer and prevents it from reforming.
What is ASTM A967?
1. Passivation Process: ASTM A967 defines the passivation process as the removal of free iron or other foreign matter from the surface of stainless steel by means of a chemical treatment. This treatment encourages the formation of a passive oxide layer, strengthening the steel's resistance to corrosion. 2.
ASTM A 380/A380M : 2017 | Stainless Steel Cleaning | SAI …
Buy ASTM A 380/A380M : 2017 practice for cleaning, descaling, and passivation of stainless steel parts, equipment, and systems standard from ASTM. ... (See also Specification A967/A967M.) 1.1.1.3 Passivation is the chemical treatment of a stainless steel with a mild oxidant, such as a nitric acid solution, for the purpose of enhancing the ...
ASTM A 967/A967M : 2017 | Chemical Passivation …
ASTM A 967/A967M : 2017. Current. Add to Watchlist. Standard Specification for Chemical Passivation Treatments for Stainless Steel Parts. Available format (s): Hardcopy, PDF. Language (s): English. Published date: 07-01-2017. Publisher: American Society for Testing and Materials.