ISO 10153-1997 PDF

Full title and description

ISO 10153:1997 — Steel — Determination of boron content — Curcumin spectrophotometric method. This International Standard specifies a validated curcumin spectrophotometric procedure for the quantitative determination of boron in steel; the official text is available as a purchasable PDF from national and international standards publishers.

Abstract

ISO 10153:1997 defines a chemical-analytical method in which steel samples are dissolved and boron compounds are decomposed, then complexed with curcumin in a buffered acetic medium to form an orange complex whose absorbance is measured spectrophotometrically (around 543 nm). The method covers low-level determination ranges and provides procedural details for sample preparation, reagents, reaction conditions and calculation of boron content.

General information

• Status: Published (International Standard; confirmed current by ISO review).
• Publication date: 28 August 1997 (edition 2 shown as 1997–09 in ISO bibliographic record).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 77.080.20 (Steels).
• Edition / version: Edition 2 — 1997.
• Number of pages: 15 pages.

Scope

This standard specifies a curcumin spectrophotometric method for determining boron in steel. It is applicable to boron contents of approximately 0.0001 % (m/m) to 0.0005 % (m/m) for low‑boron unalloyed steels and from about 0.0005 % (m/m) up to 0.012 % (m/m) for steels with higher boron contents. The procedure includes sample dissolution, acid decomposition of boron compounds, formation of the curcumin–boron complex in buffered acetic medium and spectrophotometric measurement with relevant calibration and calculation steps.

Key topics and requirements

• Principle: dissolution of the steel sample, decomposition of boron species, complex formation with curcumin and spectrophotometric measurement (≈543 nm).
• Applicable concentration ranges: ~0.0001–0.0005 % (m/m) for low‑boron unalloyed steels; ~0.0005–0.012 % (m/m) for steels with higher boron content.
• Sample preparation and normative references: the standard refers to laboratory glassware and sampling/preparation standards (for example ISO 1042, ISO 14284) and water-for-analysis specifications (ISO 3696) as normative references.
• Reagents and reagents handling: curcumin reagent, acids (hydrochloric, nitric, orthophosphoric, sulfuric) and buffered acetic media; specified heating and decomposition conditions are required to ensure complete conversion of boron to a measurable form.
• Calibration, blanks and interferences: procedures for calibration, use of blanks and correction for potential interferences are defined to ensure accurate low‑level measurement.
• Limitations and intended use: method is intended for routine laboratory analysis of steels within the stated concentration ranges; not intended for other matrices without validation.

Typical use and users

Used by metallurgical and materials testing laboratories, steel producers and quality control departments, research laboratories working on ferrous metallurgy, and conformity assessment bodies that require quantitative determination of boron in steel for product specification, process control or research. National standards bodies and standards publishers also distribute the official PDF text for these users.

Related standards

Related and normative references cited by ISO 10153:1997 include ISO 1042 (laboratory volumetric glassware), ISO 14284 (sampling and preparation of samples for chemical analysis of steel and iron) and ISO 3696 (water for analytical laboratory use). The previous edition ISO 10153:1991 is superseded by the 1997 edition.

Keywords

Boron; steel; curcumin; spectrophotometry; chemical analysis; quantitative determination; ISO 10153; boron determination; metallurgical analysis; analytical chemistry.

FAQ

Q: What is this standard?

A: ISO 10153:1997 is an International Standard that specifies a curcumin spectrophotometric method for the determination of boron content in steel.

Q: What does it cover?

A: It covers the analytical principle, required reagents and apparatus, sample dissolution and decomposition procedures, formation of the curcumin–boron complex, spectrophotometric measurement (around 543 nm), calibration and calculation, and procedural limitations and applicability ranges.

Q: Who typically uses it?

A: Metallurgical testing laboratories, steel manufacturers and quality-control labs, research institutions working with ferrous materials, and conformity assessment bodies that require standardized boron analysis in steel.

Q: Is it current or superseded?

A: The 1997 edition (ISO 10153:1997, edition 2) is listed as published and has been through ISO systematic reviews; ISO's bibliographic record indicates it has been reviewed/confirmed and remains current as the active edition. (Users should check the official ISO bibliographic record or their national standards body for the absolute latest status before relying on it for regulatory compliance.)

Q: Is it part of a series?

A: It is part of ISO's body of standards for methods of chemical analysis of steels (ISO/TC 17/SC 1), and it replaces an earlier edition (ISO 10153:1991). It also cross‑references other ISO methods and laboratory practice standards (for glassware, sampling and water).

Q: What are the key keywords?

A: Boron, curcumin, spectrophotometry, steel, chemical analysis, ISO 10153.