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ASTM D 1732 : 2003

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

Standard Practices for Preparation of Magnesium Alloy Surfaces for Painting
Available format(s)

Hardcopy , PDF

Superseded date

11-11-2014

Language(s)

English

Published date

09-10-2003

CONTAINED IN VOL. 02.05, 2017 Defines two classes of treatment for preparation of magnesium alloy surfaces for painting, as follows: Class I - Chemical Treatments; & Class II - Anodic Treatments.

1.1 These practices cover two classes of treatment for preparation of magnesium alloy surfaces for painting, as follows:

Class I—Chemical Treatments.

Class II—Anodic Treatments.

In general, the latter treatments are the more protective of the two classes. Mechanical (abrasive) treatments, solvent cleaning, alkaline solution treatments, and acid pickles not resulting in protective conversion coatings are suitable preliminary treatments only for metal to be exposed under mildly corrosive (indoor) exposures. When a high degree of corrosion protection and paint adhesion are desired, as in many outdoor environments, surface preparation by one of the above conversion-coat classes is necessary. The hexavalent chromium based methods given are not recommended as hexavalent chromium is a known carcinogen.

Note 1—Testing of Coatings—Quality control tests of coatings are frequently desirable, and these generally consist of exposures, with or without paint, to salt spray, humidity, or natural environments, with suitable procedures for assessing the degree of breakdown suffered after fixed time intervals. It is recommended that quality control tests of coatings shall be made as far as possible with high-purity material (for example AZ31A alloy), the inherent corrosion rate of which is relatively consistent from batch to batch) and that precautions shall be taken to remove surface contamination before coatings are applied. Such contamination shall be removed by acid pickling to a depth of at least 0.001 in. (25 m) per side.

1.2 This standard may involve hazardous materials, operations, and equipment. 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 limitations prior to use. (See Note 11.) PRELIMINARY TREATMENT OF SURFACES

Committee
B 08
DevelopmentNote
Supersedes MIL M 45202 (07/2000)
DocumentType
Standard Practice
Pages
8
PublisherName
American Society for Testing and Materials
Status
Superseded
SupersededBy
Supersedes

MIL-DTL-5002 Revision E:2011 SURFACE TREATMENTS AND INORGANIC COATINGS FOR METAL SURFACES OF WEAPONS SYSTEMS
ASTM B 660 : 2015 Standard Practices for Packaging/Packing of Aluminum and Magnesium Products
ASTM D 6577 : 2015 Standard Guide for Testing Industrial Protective Coatings
ASTM D 3451 : 2006 : R2017 Standard Guide for Testing Coating Powders and Powder Coatings
ASTM D 3322 : 1982 : R2001 Standard Practice for Testing Primers and Primer Surfacers Over Preformed Metal
MIL-DTL-14072 Revision F:2013 FINISHES FOR GROUND BASED ELECTRONIC EQUIPMENT
MIL-STD-871 Revision C:2015 ELECTRO-CHEMICAL STRIPPING OF INORGANIC FINISHES
ASTM D 3322 : 1982 : R1996 : EDT 1 Standard Practice for Testing Primers and Primer Surfacers Over Preformed Metal
ASTM D 4712 : 1987 : REV A : R1996 Standard Guide for Testing Industrial Water-Reducible Coatings
ASTM D 3322 : 1982 : R2011 Standard Practice for Testing Primers and Primer Surfacers Over Preformed Metal
ASTM B 879 : 1997 Standard Practice for Applying Non-Electrolytic Conversion Coatings on Magnesium and Magnesium Alloys
ASTM D 3322 : 1982 : R2005 Standard Practice for Testing Primers and Primer Surfacers Over Preformed Metal
ASTM B 879 : 1997 : R2008 : EDT 1 Standard Practice for Applying Non-Electrolytic Conversion Coatings on Magnesium and Magnesium Alloys
ASTM B 905 : 2000 : R2010 Standard Test Methods for Assessing the Adhesion of Metallic and Inorganic Coatings by the Mechanized Tape Test
ASTM D 345 : 2002 Side bearings of the freight wagon bogies. General specifications
MIL-STD-186 Revision F:2002 PROTECTIVE FINISHING SYSTEMS FOR ROCKETS, GUIDED MISSILES, SUPPORT EQUIPMENT AND RELATED MATERIALS
MIL-PRF-46010 Revision H:2013 LUBRICANT, SOLID FILM, HEAT CURED, CORROSION INHIBITING NATO CODE S-1738
MIL-PRF-46147 Revision D:2008 LUBRICANT, SOLID FILM, AIR CURED, CORROSION INHIBITING
ASTM B 879 : 1997 : R2003 : EDT 1 Standard Practice for Applying Non-Electrolytic Conversion Coatings on Magnesium and Magnesium Alloys
SAE AS 5528 : 2016 LUBRICANT APPLICATION, SOLID FILM, HEAT CURED, CORROSION INHIBITING
ASTM D 3451 : 2006 Standard Guide for Testing Coating Powders and Powder Coatings
ASTM B 905 : 2000 : R2016 Standard Test Methods for Assessing the Adhesion of Metallic and Inorganic Coatings by the Mechanized Tape Test
MIL-STD-171 Revision F:2011 FINISHING OF METAL AND WOOD SURFACES
ASTM D 3451 : 2006 : R2012 Standard Guide for Testing Coating Powders and Powder Coatings
ASTM D 4712 : 1987 : REV A : R2001 Standard Guide for Testing Industrial Water-Reducible Coatings
ASTM B 905:2000 Standard Test Methods for Assessing the Adhesion of Metallic and Inorganic Coatings by the Mechanized Tape Test
GOST 849:2018 Primary nickel. SpecificationsE
ASTM D 6577 : 2015 : REDLINE Standard Guide for Testing Industrial Protective Coatings
ASTM B 905 : 2000 : R2005 Standard Test Methods for Assessing the Adhesion of Metallic and Inorganic Coatings by the Mechanized Tape Test
ASTM B 660 : 2015 : REDLINE Standard Practices for Packaging/Packing of Aluminum and Magnesium Products
ASTM B 879 : 1997 : R2013 Standard Practice for Applying Non-Electrolytic Conversion Coatings on Magnesium and Magnesium Alloys
ASTM D 3322 : 1982 : R2017 Standard Practice for Testing Primers and Primer Surfacers Over Preformed Metal
ASTM D 4712 : 1987 : REV A : R2005 Standard Guide for Testing Industrial Water-Reducible Coatings (Withdrawn 2014)

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