GB/T 4956-2025 Active National standards

GB/T 4956-2025 Non-magnetic coatings on magnetic substrates—Measurement of coating thickness—Magnetic method

Publish Date: 2025-10-31 Implement Date: 2026-05-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 4956-2025

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Material protection

ICS Name: \nMetal plating

Publish Date: 2025-10-31

Implement Date: 2026-05-01

Publisher: 国家市场监督管理总局、国家标准化管理委员会

Technical Committee: 全国金属与非金属覆盖层标准化技术委员会(SAC/TC 57)

Pages: 36 pages

Scope

本文件描述了磁性基体上非磁性覆盖层厚度的一种无损测量方法。
本测量方法对典型覆盖层是可接触、非破坏性的。探头或带有集成探头的仪器直接放置在待测覆盖层上。覆盖层厚度在仪器上显示。
本文件适用于油漆和清漆、电镀层、搪瓷涂层、塑料涂层、粉末涂层、包覆层的厚度测量。
注：本方法还用于测量非磁性基体金属或者其他材料（见GB/T 13744）上的磁性覆盖层的测量。

Development Information

Drafting Units:

中国机械总院集团武汉材料保护研究所有限公司、东方电气集团东方汽轮机有限公司、北京科技大学、湖北省标准化与质量研究院、山西国强交通科技有限公司、东营市工业产品检验与计量检定中心

Drafting Persons:

康岩松、巩秀芳、陈亚平、王伟、万桥、张津、李婳婧、邹合陈、唐益忠、张志涛、陈偏、刘铭奇、薛建强

Word Count: 54 Thousand words Pages: 36 pages

Replace the following standards

GB/T 4956-2003 Non-magnetic coatings on magnetic substrates—Measurement of coating thickness-Magnetic method

Referenced Standards

GB/T 5206-2015 Paints and varnishes—Terms and definitions GB/T 5206.1-1985 Paints and varnishes—Vocabulary—Part 1:General terms GB/T 5206.2-1986 Paints and varnishes—Vocabulary—Part 2:Terminology of resins GB/T 5206.3-1986 Paints and varnishes—Vocabulary—Part 3:Pigment terms GB/T 5206.4-1989 Paints and varnishes—Vocabulary—Part 4:Terminology relating to physical and chemical properties of coatings and films GB/T 5206.5-1991 Paints and varnishes—Vocabulary—Part 5:Terminology relating to defects of coatings and films GB/T 6379.1-2004 Accuracy(trueness and precision)of measurement methods and results—Part 1:General principles and definitions GB/T 12334-2001 Metallic and other inorganic coatings—Definitions and conventions concerning the measurement of thickness ISO/IEC Guide 98-3

Adopt standards

ISO 2178:2016

Related Standards

GB/T 6462-1986 Replaced

GB/T 6462-1986 Metallic and oxide coatings—Measurement of coating thickness—Microscopical method

Publish Date: 1986-06-11

GB/T 6463-1986 Replaced

GB/T 6463-1986 Metallic and other non-organic coatings—Review of methods of measurement of thickness

Publish Date: 1986-06-11

GB/T 6465-1986 Replaced

GB/T 6465-1986 Metallic and other non-organic coatings—Corrodkote corrosion test(CORR test)

Publish Date: 1986-06-11

GB/T 6466-1986 Replaced

GB/T 6466-1986 Electrodeposited chromium coatings—Electrolytic corrosion testing (EC test)

Publish Date: 1986-06-11

GB/T 6808-1986 Abolished

GB/T 6808-1986 Anodizing of aluminium and its alloys—Accelerated test of light fastness of coloured anodic oxide coatings using artificial light

Publish Date: 1986-08-28

GB/T 8013-1987 Replaced

GB/T 8013-1987 Anodizing of aluminium and aluminium alloys—General specifications for anodic oxidation coatings

Publish Date: 1987-06-26