GB/T 223.21-1994

Active

Methods for chemical analysis of iron，steel and alloy--The 5-Cl-PADAB spectrophotometricmethod for the determination of cobalt content

钢铁及合金化学分析方法 5-Cl-PADAB分光光度法测定钴量

Standard Type

GBT

ICS

77.080

CCS

H11

Status

Active

Issue Date

1994-01-17

Implementation

1994-10-01

Centralized Committee

中国钢铁工业协会

Issuing Authority

国家技术监督局

Application Summary AI generated

This standard specifies a spectrophotometric method using 5-Cl-PADAB reagent to determine the cobalt content in iron, steel, and alloys. It is applied in metallurgical laboratories and quality control settings for analyzing cobalt concentrations in ferrous materials, particularly where precise measurement of trace to moderate cobalt levels is required for material certification or alloy composition verification.

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.