ISO 6892-2-2018 PDF

Full title and description

ISO 6892-2:2018 — Metallic materials — Tensile testing — Part 2: Method of test at elevated temperature. This International Standard specifies procedures, apparatus requirements and test conditions for tensile testing of metallic materials at temperatures above room temperature to determine temperature-dependent mechanical properties such as yield, proof and tensile strength and elongation.

Abstract

ISO 6892-2:2018 defines a standardized method for performing tensile tests on metallic materials at elevated temperatures (above approximately 35 °C). The standard covers specimen preparation references, test-machine and measurement-system calibration, temperature control and measurement, two alternative strain-rate control methods, and reporting requirements to ensure reproducibility and traceability of high-temperature tensile data.

General information

• Status: Published (current edition).
• Publication date: 2018 (Edition 2, published March 2018).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 77.040.10 — Mechanical testing of metals.
• Edition / version: Edition 2 (2018).
• Number of pages: 21 (ISO edition).

Scope

This standard specifies a method for tensile testing of metallic materials at temperatures higher than room temperature to determine temperature-dependent mechanical behaviour. It applies to tests carried out at indicated specimen surface temperatures and describes requirements for specimen geometry (referencing ISO 6892-1 for room-temperature specimen requirements), gripping, extensometer placement, heating, temperature measurement and control, strain-rate selection and test execution. ISO 6892-2 is intended for use where elevated-temperature tensile properties (proof strength, yield, ultimate tensile strength, elongation) are required for design, qualification, research or quality control.

Key topics and requirements

• Two test-speed (strain-rate) procedures: Method A (strain-rate control with narrow tolerances to minimise measurement uncertainty) and Method B (wider conventional strain-rate ranges for specific comparisons).
• Requirements for test pieces and gauge length marking (with cross-reference to ISO 6892-1 for geometry and measurement of original cross-sectional area).
• Apparatus calibration: force-measuring system calibration and verification (traceable calibration), and extensometer requirements and classes.
• Temperature measurement and control: location of sensors on specimen surface, minimum number of sensors, permitted deviations between specified and indicated temperatures, sensor calibration and verification intervals.
• Procedures for setting force zero, gripping, extensometer installation, heating and soaking before test, and starting conditions.
• Specified tolerances for temperature and strain-rate, and guidance on reporting test conditions and results for reproducibility.
• Properties typically determined at elevated temperature (proof/yield strength, tensile strength, elongation) and note of properties generally not determined unless explicitly required (e.g., permanent set values).

Typical use and users

ISO 6892-2:2018 is used by materials testing laboratories, research and development groups, quality assurance and certification bodies, and engineering teams in sectors such as aerospace, power generation, automotive, petrochemical and metallurgy. Typical users include mechanical testing technicians, materials scientists, metallurgists, design engineers requiring temperature-dependent material data, and standards/qualification engineers.

Related standards

Standards commonly used alongside ISO 6892-2 include ISO 6892-1 (Tensile testing at room temperature), ISO 7500-1 (Calibration of force-measuring systems), ISO 9513 (Calibration of extensometers), and equivalent regional/adopted documents (e.g., EN ISO 6892-2). Comparable ASTM methods for high-temperature tensile testing (used in some industries) are also referenced in practice.

Keywords

tensile testing, metallic materials, elevated temperature, high-temperature testing, strain rate, extensometer, calibration, temperature control, yield strength, tensile strength, ISO 6892-1

FAQ

Q: What is this standard?

A: ISO 6892-2:2018 is the ISO standard that specifies methods for tensile testing metallic materials at temperatures higher than room temperature (elevated-temperature tensile testing).

Q: What does it cover?

A: It covers specimen references, apparatus and calibration requirements, temperature measurement and control, two strain-rate test methods (Methods A and B), test execution procedures, tolerances and reporting for elevated-temperature tensile tests.

Q: Who typically uses it?

A: Materials testing laboratories, metallurgists, mechanical engineers, QA/qualification teams and R&D groups in aerospace, power generation, automotive, petrochemical and related industries that need reliable high-temperature tensile properties.

Q: Is it current or superseded?

A: The document is the second edition published in 2018 and is the current ISO edition for Part 2 (as of its 2018 publication). National and regional identical/adopted versions (EN ISO, BS EN, etc.) exist; users should check for any later revisions or amendments before use.

Q: Is it part of a series?

A: Yes. ISO 6892 is a multipart series: ISO 6892-1 covers tensile testing at room temperature and ISO 6892-2 covers tensile testing at elevated temperature; the parts together define standardized tensile test procedures for metallic materials across temperature ranges.

Q: What are the key keywords?

A: Elevated temperature, tensile testing, metallic materials, strain rate, extensometer, temperature control, calibration, ISO 6892-1, proof strength, yield strength, tensile strength.