Standard No.:	GB/T 43760-2024
English Name:	Continuous silicon carbide fiber with low oxygen and high carbon
Chinese Name:	低氧高碳型连续碳化硅纤维
Chinese Classification:	V10    Basic standards for aviation and aerospace materials
Professional Classification:	GB    National Standard
ICS Classification:	49.025.99 49.025.99    Other materials 49.025.99
Issued by:	SAMR; SAC
Issued on:	2024-3-15
Implemented on:	2024-7-1
Status:	valid
Language:	English
File Format:	PDF
Word Count:	7500 words
Price(USD):	225.0
Delivery:	via email in 1~3 business day

Continuous silicon carbide fiber with low oxygen and high carbon 1 Scope This document specifies the classification, signs, requirements, test methods, inspection rules, marks, labels, accompanying documents, packaging, transportation and storage of the continuous silicon carbide fiber with low oxygen and high carbon (hereinafter referred to as "the fiber"). This document is applicable to the inspection and delivery of the continuous silicon carbide fiber with low oxygen and high carbon with tow specifications of 0.5 K and 1 K, and may serve as a reference for the inspection and delivery of other specifications of fibers. 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 16555 Chemical analysis of refractories containing carbon and - silicon carbide or nitride GB/T 21114 Refractories - Chemical analysis by X-ray fluorescence (XRF) - Fused cast-bead method GB/T 26202 Paper and board GB/T 34520.1 Test methods for continuous silicon carbide fiber - Part 1: Size content of filament yarn GB/T 34520.2 Test methods for continuous silicon carbide fiber - Part 2: Diameter of single-filament fiber GE/T 34520.3 Test methods for continuous silicon carbide fiber - Part 3: Linear density and density GB/T 34520.4 Test methods for continuous silicon carbide fiber - Part 4: Tensile properties of filament yarn GB/T 34520.5 Test methods for continuous silicon carbide fiber - Part 5: Tensile properties of single-filament fiber GB/T 34520.7 Test methods for continuous silicon carbide fiber - Part 7: High temperature strength retention rate GB/T 34520.8 Test methods of continuous silicon carbide fibers - Part 8: Oxygen content GB/T 34520.9 Test methods of continuous silicon carbide fibers - Part 9: Carbon content GB/T 40724 Terminology for carbon fiber and carbon fiber composites 3 Terms and definitions For the purposes of this document, the terms and definitions given in GB/T 40724 and the following apply. 3.1 continuous silicon carbide fiber with low oxygen and high carbon continuous silicon carbide fiber with an oxygen content of less than 1% and a carbon-silicon atomic ratio of not less than 1.3 4 Classification and labeling 4.1 Classification 4.1.1 Tow specification classification The tow specification classification is expressed by the number and the letter K. The number is the ratio of the number of single fibers in each fiber to 1,000. For example, for a fiber bundle of 500 single fibers, the tow specification is expressed as 0.5 K.

Contents Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 Classification and labeling 5 Requirements 6 Inspection methods 7 Inspection rules 8 Marking, labeling and accompanying documents 9 Packaging, transportation and storage