ISO 22033-2011 PDF

Full title and description

ISO 22033:2011 — Nickel alloys — Determination of niobium — Inductively coupled plasma/atomic emission spectrometric (ICP‑AES) method. This International Standard specifies an ICP‑AES procedure for measuring the mass fraction of niobium in nickel alloys, intended for routine chemical analysis and quality control of nickel‑based materials.

Abstract

ISO 22033:2011 defines a laboratory method using inductively coupled plasma/atomic emission spectrometry to determine the niobium (Nb) content in nickel alloys. The method covers the analytical range for niobium mass fraction typically between 0.10 % and 10 % and includes requirements for sample preparation, calibration, interference control and expression of results for accurate and repeatable niobium determination.

General information

• Status: Published (confirmed following periodic review).
• Publication date: 23 August 2011 (Edition 2, 2011).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 77.120.40 — Nickel, chromium and their alloys; prepared by ISO/TC 155.
• Edition / version: Edition 2 (2011).
• Number of pages: 11 (ISO official edition); some national adoptions/publications show different pagination (for example some national documents list 24 pages including national forewords/translation).

Scope

Specifies an ICP‑AES (inductively coupled plasma atomic emission spectrometric) method for determination of the mass fraction of niobium in nickel alloys. The method is intended for niobium concentrations from about 0.10 % up to 10 % (mass fraction) and is applicable to a wide range of nickel‑based alloys used in industry; details are provided for reagents, apparatus, sample dissolution/preparation, calibration and result calculation.

Key topics and requirements

• Analytical principle: quantification of niobium by ICP‑AES using wavelength(s) selected to minimise spectral interferences.
• Scope of application: nickel alloys with Nb mass fractions typically between 0.10 % and 10 %.
• Sample preparation: guidance on test portion, dissolution/digestion procedures to produce suitable test solutions for ICP measurement.
• Calibration and standards: recommendations for calibration strategy (matrix‑matched or internal standardization/bracketing) and preparation of calibration solutions.
• Interference handling: identification and correction/minimization of spectral and matrix interferences common in multi‑element nickel matrices.
• Performance characteristics: instructions for precision, repeatability and expression of results; requirements for reporting the niobium mass fraction and relevant test conditions.
• Quality control: use of blanks, reference materials and routine checks of instrument performance (wavelengths, sensitivity, background) to ensure traceable results.

Typical use and users

Used by industrial and commercial chemical analytical laboratories, metal producers and processors, plating and surface‑coating companies, inspection and certification bodies, research laboratories and procurement/quality control teams that need validated, repeatable niobium determinations in nickel‑based alloys for specification compliance, process control and material certification.

Related standards

Relevant documents and neighboring standards include the previous edition ISO 22033:2005 (superseded), other ISO methods for elemental determination in nickel alloys (for example ISO/TS 18223:2015 — determination of nickel by ICP‑AES), and complementary test methods/standards such as performance‑based ASTM methods for ICP‑AES analysis of nickel alloys. National adoptions (GOST, SS‑ISO, EVS, etc.) exist that reproduce ISO 22033:2011 in national languages and formats.

Keywords

nickel alloys; niobium; Nb; inductively coupled plasma; ICP‑AES; atomic emission spectrometry; elemental analysis; chemical analysis; ISO/TC 155; mass fraction; metallurgical testing.

FAQ

Q: What is this standard?

A: ISO 22033:2011 is an ISO international standard providing a validated ICP‑AES method for determining the mass fraction of niobium in nickel alloys.

Q: What does it cover?

A: It covers sample preparation, instrument measurement (ICP‑AES), calibration approach, interference control and the calculation/reporting of niobium mass fraction in nickel alloys—typically in the range 0.10 % to 10 %.

Q: Who typically uses it?

A: Metallurgical and materials testing laboratories, manufacturers and quality control personnel in industries working with nickel‑based alloys (aerospace, power generation, chemical processing, corrosion‑resistant components), and accreditation/certification bodies.

Q: Is it current or superseded?

A: ISO 22033:2011 is published (Edition 2, 2011) and was confirmed during ISO's periodic review; the ISO catalogue lists the 2011 edition as the current published edition (confirmation recorded in ISO lifecycle). Users should check national catalogues or ISO to confirm if any revision has been published after 2011 before use.

Q: Is it part of a series?

A: It sits within ISO/TC 155 work on nickel and nickel alloys and is one of several ISO documents that define chemical analysis and test methods for nickel alloys (other related ISO/TS and ISO standards cover determination of nickel and other elemental constituents by ICP‑AES or other techniques).

Q: What are the key keywords?

A: nickel alloys, niobium, Nb, ICP‑AES, atomic emission spectrometry, elemental determination, mass fraction, ISO 22033.