GB/T 43760-2024
Low oxygen and high carbon continuous silicon carbide fiber (English Version)

Standard No.

GB/T 43760-2024

Language

Chinese, Available in English version

Release Date

2024

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China  CN  /  GB

Latest

GB/T 43760-2024

Introduction

1. Background of standard formulation and analysis of technological evolution

GB/T 43760-2024 "Low-oxygen and high-carbon continuous silicon carbide fiber" was formulated to meet the demand for high-performance materials in the aerospace field. With the development of aerospace technology, silicon carbide fiber has become a key material due to its excellent high-temperature performance and oxidation resistance.

2. Comparison of standard frameworks

Standard dimensions	GB/T 43760—2024	International reference standards
Classification and marking	Tow specifications (0.5K and 1K), Sizing agent classification (epoxy resin, polyacrylic acid, etc.)	ISO/TC 41
Performance indicators	Oxygen content ≤1.0%, Carbon-silicon atomic ratio ≥1.3	NAS-1462
Test methods	Oxygen content detection (GB/T 34520.8), Carbon-silicon atomic ratio calculation formula	MIL-F-17986D

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3. Professional terminology explanation and practical application cases

Low-oxygen high-carbon continuous silicon carbide fiber refers to continuous silicon carbide fiber with an oxygen content of less than 1% and a carbon-silicon atomic ratio of not less than 1.3. Its excellent performance makes it widely used in high-performance composite materials in the aerospace field.

For example, in the manufacture of aircraft engines, this material is used to manufacture high-temperature oxidation-resistant components, significantly improving the service life and performance stability of the engine.

4. Implementation suggestions

• Manufacturers should strictly follow the standards for quality control to ensure that the products meet the requirements of oxygen content, carbon-silicon ratio and other indicators.
• Testing agencies should be equipped with advanced testing equipment, such as X-ray fluorescence spectrometers and chemical analysis instruments.
• Users should fully consider the application scenario requirements during the material selection stage to ensure that the material performance matches the actual working conditions.

GB/T 43760-2024 Referenced Document

• GB/T 16555 Chemical Analysis Methods for Carbon, Silicon Carbide, and Nitride Refractory Materials*， 2025-08-29 Update
• GB/T 191 Packaging and Storage Graphic Symbols Mark*， 2025-08-29 Update
• GB/T 21114 Refractories—Chemical analysis by X-ray fluorescence(XRF)—Fused cast-bead method
• GB/T 26202 paper tube cardboard
• 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
• GB/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

GB/T 43760-2024 history

• 2024 GB/T 43760-2024 Low oxygen and high carbon continuous silicon carbide fiber

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