Standard No.:	GB/T 42800-2023
English Name:	High purity opaque quartz glass
Chinese Name:	高纯不透明石英玻璃
Chinese Classification:	Q35    Quartz glass
Professional Classification:	GB    National Standard
ICS Classification:	81.040.30 81.040.30    Glass products 81.040.30
Issued by:	SAMR; SAC
Issued on:	2023-05-23
Implemented on:	2023-12-1
Status:	valid
Language:	English
File Format:	PDF
Word Count:	5500 words
Price(USD):	165.0
Delivery:	via email in 1~3 business day

High purity opaque quartz glass 1 Scope This document specifies the grading, requirements, test methods, inspection rules as well as marking, packaging, transportation and storage of high purity opaque quartz glass. It is applicable to high purity opaque quartz glass materials with thermal insulation effects and used in semiconductor, photovoltaic and other fields. 2 Normative references The following documents contain requirements which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 191 Packaging - Pictorial marking for handling of goods. GB/T 3284 Analytical method of the chemical composition in the quartz glass GB/T 5432 Test method for density of glass by buoyancy GB/T 10701-2008 Test methods for thermal stability of silica glass GB/T 22588 Determination of thermal diffusivity or thermal conductivity by the flash method JC/T 2205 Terminology of quartz glass 3 Terms and definitions For the purposes of this document, the terms and definitions given in JC/T 2205 apply. 4 Grading Semi-conductor and photovoltaic quartz glasses may be divided according to the appearance quality and impurity element content.

Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 Grading 5 Requirements 6 Test methods 7 Inspection rules 8 Marking, packaging, transportation and storage