GB/T 24514-2009 (English Version) PDF

Standard No.: GB/T 24514-2009
Language: Chinese, Available in English version
Release Date: 2009
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest: GB/T 24514-2009

Scope: This standard specifies the method for determining the mass of coating per unit area by gravimetric method, and the determination of coating mass and chemical properties of zinc-based and (or) aluminum-based coatings on steel surfaces by using inductively coupled plasma atomic emission spectrometry and flame atomic absorption spectrometry. method of ingredients. Zinc-based and (or) aluminum-based coatings on steel surfaces mentioned in this standard include hot-dip and electroplating pure zinc coatings, hot-dip galvanized iron alloy coatings, electro-galvanized zinc-nickel alloy coatings, hot-dip galvanized coatings (5% aluminum) and hot-dip galvanized coatings. Aluminum zinc coating (55% aluminum), etc. This standard applies to the measurement range of 40% to 100% zinc content (mass fraction), 0.02% to 60% aluminum content (mass fraction), 7% to 20% nickel content (mass fraction), 0.2% to 20% iron content (mass fraction), 0.2% to 10% silicon content (mass fraction). The method of determining the chemical composition of coatings by flame atomic absorption spectrometry is not suitable for the determination of zinc content. The determination method of this standard can be used as the referee method.

GB/T 24514-2009 Referenced Document

GB/T 12806-1991 Laboratory glassware-one-mark volumetric flasks
GB/T 12808-1991 Laboratory glassware--One-mark pipettes
GB/T 20066-2006 Steel and iron.Sampling and preparation of samples for the determination of chemical composition
GB/T 6379.1-2004 Accuracy(trueness and precision)of measurement methods and results Part 1:General principles and definitions
GB/T 6379.2-2004 Accuracy(trueness and precision)of measurement methods and results-Part 2:Basic method for the determination of repeatability and reproducibility of a standard measurement method
GB/T 6682-2008 Water for analytical laboratory use.Specification and test methods
ISO 5725-3:1994 Accuracy (trueness and precision) of measurement methods and results - Part 3: Intermediate measures of the precision of a standard measurement method

2009 GB/T 24514-2009 Zinc and/or aluminium based coatings on steel.Determination of coating mass per unit area and chemical composition.Gravimetry,inductively coupled plasma atomic emission spectrometry and flame atomic absorption spectrometry