GB/T 4699.3-2007

Active

Ferrochromium, silicochromium and nitrogen-bearing ferrochromium -Determination of phosphorus content - Molybdobismuthylphosphoric blue spectrophotometric method and the molybdenum blue spectrophotometric method

铬铁、硅铬合金和氮化铬铁 磷含量的测定 铋磷钼蓝分光光度法和钼蓝分光光度法

Standard Type
GBT
ICS
77.100
CCS
H11
Status
Active
Issue Date
2007-10-25
Implementation
2008-04-01
Centralized Committee
中国钢铁工业协会
Issuing Authority
中华人民共和国国家质量监督检验检疫总局、中国国家标准化管理委员会

Application Summary AI generated

This standard specifies two spectrophotometric methods for determining phosphorus content in ferrochromium, silicochromium, and nitrogen-bearing ferrochromium. It is applied in the metallurgical industry for quality control and inspection of these ferroalloys, which are used as additives in steelmaking to improve hardness, corrosion resistance, and other properties. The methods ensure accurate phosphorus analysis, critical for meeting product specifications and preventing embrittlement in final steel products.

Related Standards

GB/T 6609.4-2004 Chemical analysis methods and determination of physical performance of alumina--Determination of ferric oxide content--Orthophenanthroline photometric method GB/T 6609.16-2004 Chemical analysis methods and determination of physical performance of alumina--Determination of boron trioxide content--Curcumin spectrophotometric method GB/T 6609.7-2004 Chemical analysis methods and determination of physical performance of alumina--Determination of titanium dioxide content--Diantiprylmehane photometric method GB/T 6609.17-2004 Chemical analysis methods and determination of physical performance of alumina--Determination of phosphorus pentoxide content--Molybdenum blue spectrophotometric method GB/T 6609.3-2004 Chemical analysis methods and determination of physical performance of alumina--Determination of silicon dioxide content--Molybdenum blue photometric method GB/T 6609.25-2004 Chemical analysismethods and determination of physical performance of alumina--Determination of untamped density GB/T 6609.24-2004 Chemical analysis methods and determination of physical performance of alumina--Measurement of the angle of repose GB/T 6609.23-2004 Chemical analysis methods and determination of physical performance of alumina--Preparation andstorage of test samples
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.