GB/T 20975.35-2020 Methods for chemical analysis of aluminium and aluminium alloys—Part 35:Determination of tungsten content—Thiocyanate spectrophotometric method (English Version)
This part of GB/T 20975 specifies the determination of tungsten content in aluminum and aluminum alloys by thiocyanate spectrophotometry. This part is applicable to the arbitration determination of steel content in aluminum and aluminum alloys. Thionate spectrophotometric measurement range: 0.15 minus 5.00%. This section does not apply to aluminum and aluminum alloys containing an aluminum mass fraction greater than 0.005 0.
GB/T 20975.35-2020 Referenced Document
GB/T 8005.2 Terms of aluminium and aluminium alloys—Part 2:Chemical analysis
GB/T 8170 Rules of rounding off for numerical values & expression and judgement of limiting values
GB/T 20975.35-2020 history
2020GB/T 20975.35-2020 Methods for chemical analysis of aluminium and aluminium alloys—Part 35:Determination of tungsten content—Thiocyanate spectrophotometric method