GB/T 31586.2-2015: Corrosion protection of steel structures by protective paint systems -- Assessment of, and acceptance criteria for, the adhesion/cohesion (fracture strength) of a coating -- Part 2: Cress-cut testing and X-cut testing

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Scope

This Part of GB/T 31586 specifies procedures for rating the resistance of
coating systems when a cut in the form of a right-angle lattice pattern (cross-
cut) or in the form of an X (X-cut) is made into the coating, penetrating through
to the substrate.
This Part is only applicable if the cross-cut or X-cut test method is specified,
together with the rating from the appropriate rating scale.
NOTE The characteristics of the coating can make the assessment of the result of a
cross-cut or X-cut test difficult.
This Part also specifies suitable equipment and defines inspection areas,
sampling plans and acceptance/rejection criteria.
This Part does not specify ratings for particular coating systems.

Basic Data

Standard ID	GB/T 31586.2-2015 (GB/T31586.2-2015)
Description (Translated English)	Corrosion protection of steel structures by protective paint systems -- Assessment of, and acceptance criteria for, the adhesion/cohesion (fracture strength) of a coating -- Part 2: Cress-cut testing and X-cut testing
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	G50
Classification of International Standard	87.040
Word Count Estimation	11,119
Date of Issue	2015-07-03
Date of Implementation	2016-02-01
Quoted Standard	ISO 2409-2006; ISO 12944-7; ISO 12944-8; ISO 19840; ASTM D3359-2002
Adopted Standard	ISO 16276-2-2007, IDT
Regulation (derived from)	National Standard Announcement 2015 No.22
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary	This Standard specifies a right angle grid pattern (cross-hatch) or X shape (crossed) cut through the coating to the substrate and coating system resistant to the assessed level of test methods. This Standard specifies only in the case of cross-cut method or crossed-out method and the appropriate grade level table applies. This Standard also specifies the applicable devices defined inspection area, sampling plans and acceptance/rejection criteria. This Standard does not specify a particular level coating system.