GB/T 223.49-1994
ActiveMethods for chemical analysis of iron，steel and alloy--Extraction separation-chlorophosphonazo mA spectro-photometric method for the determination of the total rare earth content
钢铁及合金化学分析方法 萃取分离-偶氮氯膦mA分光光度法测定稀土总量
Application Summary AI generated
This standard specifies a spectrophotometric method using chlorophosphonazo mA after extraction separation to determine the total rare earth content in iron, steel, and alloys. It is applied in metallurgical laboratories and quality control settings for analyzing ferrous materials, ensuring accurate measurement of rare earth elements in production and testing contexts.
Related Standards
GB/T 222-2006
Permissible tolerances for chemical composition of steel products
GB/T 9971-2004
Pure iron for raw material
GB/T 4223-2004
Iron and steel scraps
GB/T 718-2005
Foundry pig iron
GB/T 1412-2005
Pig iron used for spheroidal graphite cast iron
GB/T 4186-2002
Molybdenum-tungsten alloy rods
GB/T 4184-2002
Tungsten-rhenium alloy wires
GB/T 18255-2000
Coking viscous oil products--Determination ofdistillation range
Transparency note: The application summary and key sentences on this page were automatically generated by AI from the standard's original text. This content has not been human-verified and should not be used for compliance or regulatory purposes. Always refer to the official standard document from the issuing authority.