Standard No.:	GB/T 1771-2007
English Name:	Paints and varnishes—Determination of resistance to neutral salt spray(fog)
Chinese Name:	色漆和清漆 耐中性盐雾性能的测定
Chinese Classification:	G50    Basic standard and general method for coating
Professional Classification:	GB    National Standard
Issued by:	AQSIQ; SAC
Issued on:	2007-9-11
Implemented on:	2008-4-1
Status:	valid
Superseding:	GB/T 1771-1991 Paints and Varnishes－Determination of resistance to neutral salt spray
Language:	English
File Format:	PDF
Word Count:	5000 words
Price(USD):	120.0
Delivery:	via email in 1 business day

1 Scope This standard describes a method for determining the resistance of coatings to neutral salt spray (fog). The method specified in this standard can be used to detect the mass of paints or coatings. 2 Normative References The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments to (excluding amending errors in the text), or revisions of, any of these publications do not apply. However, all parties coming to an agreement according to this standard are encouraged to study whether the latest edition of the normative document is applicable. For undated references, the latest edition of the normative document applies. GB/T 3186-2006 Paints, Varnishes and Raw Materials for Paints and Varnishes - Sampling (ISO 15528:2000, IDT) GB/T 6682 Water for Analytical Laboratory Use - Specification and Test Methods (GB/T 6682-1992, neq ISO 3696:1987) GB/T 9271 Paints and Varnishes - Standard Panels for Testing (GB/T 9271-1988, eqv ISO 1514:1984) GB 9278 Temperatures and Humidities for Conditioning and Testing of Paint Specimens (GB 9278-1988, eqv ISO 3270:1984, Paints and Varnishes and Their Raw Materials - Temperatures and Humidities for Conditioning and Testing) GB/T 13452.2 Paints and Varnishes - Determination of Film Thickness (GB/T 13452.2-1992, eqv ISO 2808:1974) GB/T 20777-2006 Paints and Varnishes - Examination and Preparation of Samples for Testing (ISO 1513:1992, IDT) ISO 3574:1999 Cold-reduced Carbon Steel Sheet of Commercial and Drawing Qualities ISO 4628-1:2003 Paints and Varnishes - Evaluation of Degradation of Paint Coatings - Designation of Intensity, Quantity and Size of Common Types of Defect - Part 1: General Principles and Rating Schemes ISO 4628-2:2003 Paints and Varnishes - Evaluation of Degradation of Paint Coatings - Designation of Intensity, Quantity and Size of Common Types of Defect - Part 2: Designation of Degree of Blistering ISO 4628-3:2003 Paints and Varnishes - Evaluation of Degradation of Paint Coatings - Designation of Intensity, Quantity and Size of Common Types of Defect - Part 3: Designation of Degree of Rusting ISO 4628-4:2003 Evaluation of Degradation of Paint Coatings - Designation of Intensity, Quantity and Size of Common Types of Defect - Part 4: Designation of Degree of Cracking ISO 4628-5:2003 Evaluation of Degradation of Paint Coatings - Designation of Intensity, Quantity and Size of Common Types of Defect - Part 5: Designation of Degree of Flaking 3 Principle A coated test panel is exposed to neutral salt spray (fog) and the effects of exposure are evaluated by principles or criteria agreed in advance between the interested parties.

Foreword I 1 Scope 2 Normative References 3 Principle 4 Required Supplementary Information 5 Test Solution 6 Apparatus 7 Sampling 8 Test Panels 9 Method of Exposure of Test Panels 10 Operating Conditions 11 Procedure 12 Examination of Test Panels 13 Precision 14 Test Report Appendix A (Normative) Required Supplementary Information Appendix B (Normative) Factors to Be Taken into Account in the Design and Construction of Salt Spray Cabinets Greater than 2m3 in Volume (See 6.1) Appendix C (Normative) Calibration of the Apparatus (See 6.7)