ISO 9513-2012 PDF

Full title and description

ISO 9513:2012 — Metallic materials — Calibration of extensometer systems used in uniaxial testing. This International Standard specifies a method for the static calibration of extensometer systems used in uniaxial testing, including axial and diametral extensometer systems and both contacting and non‑contacting types.

Abstract

Provides a standardized procedure for static calibration of extensometer systems used during tensile and compression (uniaxial) tests on metallic materials. The document covers requirements for calibration apparatus and its traceability to SI units, performance criteria for apparatus (see Annex B), pre‑calibration inspection, reporting and calibration certificates, and recommended calibration intervals and uncertainty limits for routine laboratory practice.

General information

• Status: Published (current edition published and maintained by ISO)
• Publication date: December 2012 (ISO edition 3, 2012).
• Publisher: International Organization for Standardization (ISO)
• ICS / categories: 77.040.10 — Mechanical testing of metals
• Edition / version: Edition 3 (ISO 9513:2012). A technical corrigendum (ISO 9513:2012/Cor 1:2013) was published to correct the 2012 text.
• Number of pages: 45 (main edition).

Information above is taken from the ISO bibliographic record for ISO 9513:2012, together with the related corrigendum notice.

Scope

Specifies a static calibration method for extensometer systems intended for use in uniaxial testing of metallic materials. The standard applies to extensometer systems that measure axial or diametral extension, and includes guidance for both contacting (mechanical) and non‑contacting (optical, video, laser) extensometer types, requirements for calibration apparatus, traceability to SI units, uncertainty evaluation, pre‑calibration inspection and reporting of both “as‑found” and “as‑left” conditions when adjustments are made.

Key topics and requirements

• Static calibration procedure for extensometer systems (gauge‑length based calibration points and measured displacements).
• Performance criteria and recommended checks for calibration apparatus (Annex B provides recommended apparatus calibration procedure and performance tables).
• Traceability to SI units and requirements for supporting measurement equipment (micrometers, microscopes, thermometry) with stated uncertainty limits.
• Specification of permissible errors and guidance on measurement uncertainty — supporting equipment uncertainty should be small relative to extensometer permissible error.
• Pre‑calibration inspection, recordkeeping, calibration intervals (typical interval ~12 months; special provisions for long‑term creep tests), and requirement to re‑calibrate after repair/adjustment.
• Mandatory content for the calibration certificate (identification, conditions, results, uncertainty, “as‑found” vs “as‑left” where applicable).

Operational details such as suggested calibration intervals, apparatus checks and certificate contents are described in the standard and illustrated in informative annexes.

Typical use and users

Used by materials testing and calibration laboratories that perform tensile, compression or creep testing on metallic specimens; manufacturers and calibration technicians for extensometers; quality and metrology managers in industrial test laboratories; and accreditation bodies assessing calibration procedures and certificates for extensometer systems.

Related standards

Commonly used alongside tensile testing standards (for example the ISO 6892 series for tensile testing of metallic materials) and creep testing standards (e.g., ISO 204 for uniaxial creep testing). Equivalent or complementary verification/calibration practices such as ASTM E83 (verification and classification of extensometer systems) are also relevant for laboratories that operate under multiple national / industry regimes.

Keywords

extensometer, calibration, calibration certificate, metallic materials, uniaxial testing, strain measurement, traceability, measurement uncertainty, axial extensometer, diametral extensometer, contacting, non‑contacting.

FAQ

Q: What is this standard?

A: ISO 9513:2012 is an International Standard that specifies methods and requirements for the static calibration of extensometer systems used in uniaxial testing of metallic materials.

Q: What does it cover?

A: It covers static calibration procedures, calibration apparatus performance criteria (Annex B), traceability to SI units, uncertainty considerations, pre‑calibration inspection, calibration intervals and the required information to include in a calibration certificate.

Q: Who typically uses it?

A: Materials testing laboratories, calibration houses, extensometer manufacturers and test‑laboratory quality/technical staff who need to ensure extensometer measurements are traceable, reproducible and within acceptable error bounds.

Q: Is it current or superseded?

A: ISO 9513:2012 is the third edition published in December 2012 and remains the current ISO edition; a technical corrigendum was issued in 2013 to correct the 2012 text. Users should check national adoptions or confirmations for local status and any later revisions.

Q: Is it part of a series?

A: It is part of the body of ISO standards on mechanical testing of metals (ICS 77.040.10) and is used in conjunction with tensile testing standards (ISO 6892 series) and creep‑testing standards (ISO 204 series) as appropriate for the test program.

Q: What are the key keywords?

A: Extensometer, calibration, strain measurement, uniaxial testing, traceability, measurement uncertainty, axial/diametral, contacting/non‑contacting.