GB/T 3654.10-1983
Replaced
GB/T 7731.1-2021
Active
National standards
GB/T 7731.1-2021 Ferrotungsten—Determination of tungsten content—Cinchonine gravimetric method and ammonium nitrate gravimetric method
GB/T 7731.1-2021 Ferrotungsten—Determination of tungsten content—Cinchonine gravimetric method and ammonium nitrate gravimetric method
Basic Information
Standard Code:
GB/T 7731.1-2021
Standard Type:
National standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
Analysis methods for steel and iron alloys
ICS Name:
Iron alloy
Publish Date:
2021-08-20
Implement Date:
2022-03-01
Publisher:
国家市场监督管理总局、国家标准化管理委员会
Technical Committee:
全国生铁及铁合金标准化技术委员会(SAC/TC 318)
Pages:
11 pages
Scope
本文件规定了辛可宁重量法和硝酸铵重量法测定钨铁中的钨含量。
本文件适用于钨铁中钨含量的测定。测定范围（质量分数）：50.00%～90.00%。
Development Information
Drafting Units:
吉铁铁合金有限责任公司、赣州江钨钨合金有限公司、江西省钨与稀土产品质量监督检验中心、青岛远诚创智科技有限公司、河北津西国际贸易有限公司、冶金工业信息标准研究院
Drafting Persons:
刘冰、聂淑兰、郑海东、张云鹏、钟映兰、黄江涛、李渊、李京霖、李士宏、张晓红、李志东、郭晓琳、古娟、王晶
Same series standard
GB/T 7731.4-2021 Ferrotungsten—Determination of phosphorus content—Phosphorus molybdenum blue spectrophotometric method
GB/T 7731.5-2021 Ferrotungsten—Determination of silicon content—Silicomolybdenum blue spectrophotometric method
GB/T 7731.10-2021 Ferrotungsten—Determination of carbon content—Infrared absorption method
Replace the following standards
GB/T 7731.1-1987
Referenced Standards
GB/T 4010-1994 Ferroalloys—Sampling and preparation of samples for chemical analysis
GB/T 4010-2015 Ferroallys sampling and preparation of samples for chemical analysis
GB/T 6682-1992 Water for analytical laboratory use—Specification and test methods
GB/T 6682-2008 Water for analytical laboratory use—Specification and test methods
GB/T 8170-1987 Rules for rounding off of numberical values
GB/T 8170-2008 Rules of rounding off for numerical values & expression and judgement of limiting values
Related Standards
GB/T 3654.1-1983
Active
GB/T 3654.1-1983 Methods for chemical analysis of ferroniobium—The paper chromatograph-gravimetric method for the determination of niobium and tantalum
GB/T 3654.2-1983
Replaced
GB/T 3654.2-1983 Methods for chemical analysis of ferroniobium—The neocuproine-chloroform extraction photometric method for the determination of copper content
GB/T 3654.3-1983
Replaced
GB/T 3654.3-1983 Methods for chemical analysis of ferroniobium The gravimetric method for the determination of silicon content
GB/T 3654.4-1983
Active
GB/T 3654.4-1983 Methods for chemical analysis of ferroniobium The combustion gravimetric method for the determination of carbon content
GB/T 3654.5-1983
Active