Standard No.:	GB/T 4893.10-2024
English Name:	Test of surface coatings of furniture—Part 10: Determination of surface resistance to scratching
Chinese Name:	家具表面漆膜理化性能试验 第10部分：耐划痕测定法
Chinese Classification:	Y80    Furniture in general
Professional Classification:	GB    National Standard
Source Content Issued by:	SAMR, SAC
Issued on:	2024-09-29
Implemented on:	2025-4-1
Status:	valid
Target Language:	English
File Format:	PDF
Word Count:	9000 words
Translation Price(USD):	270.0
Delivery:	via email in 1~3 business day

GB/T 4893.10-2024 Test of surface coatings of furniture - Part 10: Determination of surface resistance to scratching 1 Scope This document describes a method for determining the resistance to scratching of surface coatings of furniture. This document is applicable to all cured surfaces of finished furniture and tests carried out on unused furniture or test panel surfaces. This document does is not applicable to leather and textile surfaces. 2 Normative references No normative reference is listed in this document. 3 Terms and definitions For the purposes of this document, the terms and definitions given in the following apply. 3.1 test panel test panel with test surface Note: The test panel is taken from the furniture, or an independent panel made using the same materials and finishing methods as the furniture 3.2 scratching trace visible and measurable trace produced by the tip of the scribing needle on the test surface under the specified load 3.3 scratching resistance minimum load required to create a scratch greater than or equal to 0.30 mm in width on surface coatings of furniture with a scratching needle Note: The unit is Newton (N). 3.4 preliminary assessments of the scratching resistance minimum load to produce a specified scratch on one test surface 3.5 intermediate assessment of scratching resistance average of the preliminary assessment of the scratching resistance of a test surface 3.6 final value of scratching resistance average of the intermediate assessment of scratching resistance of the three test surfaces 4 Principle Scratching resistance is the minimum load (in N) required to use a scratching needle (see 7.2) to produce scratches with specified width requirements on surface coatings of furniture. It determines the ability of the surface coatings of furniture to resist scratching by a certain force.

Contents Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 Principle 5 Test conditions 6 Materials 7 Apparatus 8 Samples 9 Test procedures 10 Test data processing 11 Test report Annex A (Informative) Inspection of scribing needle tip, example of results record sheet and calculation of final values