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DEFSTAN
DEFSTAN 03-18/4(2008) : 2008

DEFSTAN 03-18/4(2008) : 2008

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

View Superseded by
superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

CHROMATE CONVERSION COATINGS (CHROMATE FILMING TREATMENTS) GRADES: STANDARD AND BRUSHING FOR ALUMINIUM AND ALUMINIUM ALLOYS

Available format(s)

Hardcopy , PDF

Superseded date

01-17-2012

Language(s)

English

Published date

01-01-2008

Publisher

UK Ministry of Defence Standards

Foreword
0 Introduction
1 Scope
2 Warning
3 Normative References
4 Definitions
  4.2 Grades
      4.2.1 Standard grade
      4.2.2 Brushing grade
  4.3 Process control schedule
  4.4 Significant surface
5 Information to be Supplied to the Processor
6 Process Control
7 Preparation, Coating and Supplementary Treatments
  7.1 Preparation of surface
      7.1.1 Degreasing
      7.1.2 General cleaning
      7.1.3 Cleaning prior to repair
  7.2 Chromate conversion coating treatments
      7.2.1 General information (Standard and Brushing
            Grades)
      7.2.2 Immersion method (Standard Grade)
      7.2.3 Brush or swab method (Standard Grade)
      7.2.4 Brush or swab method (Brushing Grade)
      7.2.5 Washing and drying after treatment
  7.3 Re-Treatment
8 Production Control and Inspection
  8.1 Production control
  8.2 Inspection
Annex A - Determination of the Weight Per Unit Area of Chromate
          Conversion Coatings
  A.1 Methodology
  A.2 Calculation
  A.3 Washing
Annex B - Process Control Tests
  B.1 Test 1 - Paint Adhesion
  B.2 Test 2 - Corrosion Resistance of Conversion Coating
      Exposed to a Salt Spray Environment Test
Annex C - Spot Test for the Presence of Protective Films
  C.1 Outline of Test
  C.2 Method
      C.2.1 Surfaces required
  C.3 Solution Make Up

Specifies the properties of chromate conversion coatings on aluminium and aluminium alloys.

DevelopmentNote
Supersedes DEFSTAN 03-18/3(2003). (03/2008)
DocumentType
Standard
Pages
16
PublisherName
UK Ministry of Defence Standards
Status
Superseded
SupersededBy
Supersedes

DEFSTAN 80-211/2(2011) : 2011 PAINT, FINISHING, EPOXY, MULTI-PACK - ANTI-SLIP FOR INTERNAL USE - LOW VOC, TYPES 1, 2 AND 3
DEFSTAN 00-970(PT0)/9(2012) : 2012 DESIGN AND AIRWORTHINESS REQUIREMENTS FOR SERVICE AIRCRAFT - PART 0: PROCEDURES FOR USE, CONTENT AND DEFINITIONS
DEFSTAN 03-2/6(2011) : 2011 CLEANING AND PREPARATION OF METAL SURFACES
DEFSTAN 00-970(PT0)/11(2013) : 2013 DESIGN AND AIRWORTHINESS REQUIREMENTS FOR SERVICE AIRCRAFT - PART 0: PROCEDURES FOR USE, CONTENT AND DEFINITIONS
DEFSTAN 03-2/5(2009) : 2009 CLEANING AND PREPARATION OF METAL SURFACES
DEFSTAN 80-210/2(2011) : 2011 PAINT, FINISHING, POLYURETHANE, MULTI-PACK - ANTI-SLIP FOR EXTERNAL USE - LOW VOC, TYPES 1, 2 AND 3
DEFSTAN 00-970(PT0)/8(2011) : 2011 DESIGN AND AIRWORTHINESS REQUIREMENTS FOR SERVICE AIRCRAFT - PART 0: PROCEDURES FOR USE, CONTENT AND DEFINITIONS
DEFSTAN 03-38/2(2010) : 2010 GUIDANCE TO THE USE OF ALTERNATIVES TO HEXAVALENT CHROMIUM FOR THE PROTECTIVE COATING OF DEFENCE EQUIPMENT
DEFSTAN 03-28(PT1)/4(2008) : 2008 PHYSICAL VAPOUR DEPOSITION OF METALS - PART 1: PHYSICAL VAPOUR DEPOSITION OF ALUMINIUM FOR PROTECTION AGAINST CORROSION
DEFSTAN 00-970(PT0)/10(2013) : 2013 DESIGN AND AIRWORTHINESS REQUIREMENTS FOR SERVICE AIRCRAFT - PART 0: PROCEDURES FOR USE, CONTENT AND DEFINITIONS
DEFSTAN 21-5/3(2009) : 2009 CODE OF PRACTICE FOR PROTECTIVE FINISHES

BS EN 2089:2005 Aluminium alloy AL-P2014A T6 or T62. Sheet and strip. 0,4 mm ≤ a ≤ 6 mm
BS EN 23270:1991 Specification for temperatures and humidities for conditioning and testing paints, varnishes and their raw materials
DEFSTAN 03-38/1(2007) : 2007 GUIDANCE FOR THE USE OF ALTERNATIVES TO HEXAVALENT CHROMIUM FOR THE PROTECTIVE COATING OF DEFENCE EQUIPMENT
DEFSTAN 03-2/4(2005) : 2005 CLEANING AND PREPARATION OF METAL SURFACES
DEFSTAN 80-161/2(2002) : 2002 PAINT, FINISHING, SPRAYING, EPOXY, MULTI-PACK
BS EN ISO 9227:2017 Corrosion tests in artificial atmospheres. Salt spray tests
BS EN ISO 2409:2013 Paints and varnishes. Cross-cut test
BS 2X 33:1998 Specification for two component epoxy primer for aerospace purposes

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