GB/T 20975.24-2020
Methods for chemical analysis of aluminium and aluminium alloys—Part 24：Determination of total rare earth content (English Version)

Standard No.

GB/T 20975.24-2020

Language

Chinese, Available in English version

Release Date

2020

Published By

国家市场监督管理总局、中国国家标准化管理委员会

Latest

GB/T 20975.24-2020

Replace

GB/T 20975.24-2008

Scope

This part of GB/T20975 specifies the determination of the total content of rare earth elements of the cerium group in aluminum and aluminum alloys by tribromoarsine spectrophotometry and oxalate gravimetric method. This section applies to the arbitration determination of the total content of rare earth elements of the cerium group in aluminum and aluminum alloys. The measurement range of tribromoarsine spectrophotometry: 0.0010% ~ 2.50%; the measurement range of oxalate gravimetric method: 1.50% ~ 16.00%. When the total content of rare earth elements in the cerium group is >1.50% to 2.50%, the oxalate weight method is used as the arbitration method.

GB/T 20975.24-2020 Referenced Document

• GB/T 15676 rare earth term
• GB/T 8005.2 Terms of aluminium and aluminium alloys—Part 2:Chemical analysis
• GB/T 8170-2008 Rules of rounding off for numerical values & expression and judgement of limiting values

GB/T 20975.24-2020 history

• 2020 GB/T 20975.24-2020 Methods for chemical analysis of aluminium and aluminium alloys—Part 24：Determination of total rare earth content
• 2008 GB/T 20975.24-2008 Methods for chemical analysis of aluminium and aluminium alloys.Part 24: Determination of total rare earth contents
• 2001 GB/T 6987.32-2001 Aluminium and aluminium alloys--Determination of total rare earth contents--Rare earth oxalate gravimetric method

GB/T 20975.24-2020 -All Parts