This document specifies the method for determining the carbon content in ferronickel using the infrared absorption method after induction furnace combustion. This document applies to the determination of carbon content in ferronickel, determination range (mass fraction). 0.001% ~ 2.5%.
Basic Data
Standard ID
GB/T 21931.1-2025 (GB/T21931.1-2025)
Description (Translated English)
Ferronickel - Determination of carbon content - Infrared absorption method after induction furnace combustion
Sector / Industry
National Standard (Recommended)
Classification of Chinese Standard
H11
Classification of International Standard
77.100
Word Count Estimation
18,132
Date of Issue
2025-08-29
Date of Implementation
2026-03-01
Older Standard (superseded by this standard)
GB/T 21931.1-2008
Issuing agency(ies)
State Administration for Market Regulation; Standardization Administration of China
