GB/T 20975.8-2020
Methods for chemical analysis of aluminium and aluminium alloys—Part 8：Determination of zinc content

Standard No.

GB/T 20975.8-2020

Language

Chinese

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

Lastest

GB/T 20975.8-2020

Replace

GB/T 20975.8-2008

Scope

This part of GB/Work 20975 specifies NasEDTA titration and flame atomic absorption spectrometry for the determination of zinc content in aluminum and aluminum alloys. This part is applicable to the arbitration determination of zinc content in lead and ten alloys. The determination range of NasEDTA titration: 2.00%-14.00%; the determination range of flame atomic absorption spectrometry: 0.0010%-14.00%%. The NasEDTA titration method is not applicable to compounds with a lead content greater than 0.01% or a lead content greater than 0.05%. Note: When the mass fraction of the pound exceeds 2.00-14.00%, the flame atomic absorption spectrometry is used as the arbitration method.

GB/T 20975.8-2020 Referenced Document

• GB/T 8005 Aluminium and aluminium alloys--Terms and definitions
• GB/T 8170 Rules of rounding off for numerical values & expression and judgement of limiting values

GB/T 20975.8-2020 history

• 2020 GB/T 20975.18-2020 Methods for chemical analysis of aluminium and aluminium alloys—Part 18:Determination of chromium content
• 2008 GB/T 20975.18-2008 Methods for chemical analysis of aluminium and aluminium alloys.Part 18: Determination of chromium content
• 2001 GB/T 6987.18-2001 Aluminium and aluminium alloys--Determination of chromium content--Flame atomic absorption spectrometric method

GB/T 20975.8-2020 -All Parts