BS EN ISO 6892-2:2018 pdf free.Metallic materials – Tensile testing Part 2: Method of test at elevated temperature.
This document specifies a method of tensile testing of metallic materials at temperatures higher than room temperature.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 6892-1, Metallic materials — Tensile testing — Part 1: Method of test at room temperature
ISO 7500-1, Metallic materials — Calibration and verification of static uniaxial testing machines — Part 1:
Tension/compression testing machines — Calibration and verification oftheforce-measurinq system
ISO 9513, Metallic materials — Calibration of extensometer systems used in uniaxial testing
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 6892-1 apply with the following exceptions and supplements.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http:/twww.electropedia.orgl
— ISO Online browsing platform: available at
In general, all test piece geometries/dimensions are based on measurements taken at room temperature. The exception may be the extensometer gauge length (see 3.3 and 10.2.2).
NOTE The following properties are generally not determined at elevated temperature unless required by relevant specifications or agreement:
— permanent set strength (Rr);
— percentage permanent elongation;
— percentage permanent extension;
— percentage yield point extension (Ae);
— percentage total extension at maximum force (Agt);
4 Symbols and designations
ISO 6892-1 provides an extensive listing of symbols and their related designations.
The additional symbols used in this document are given in Table 1.
5 Principle
The test involves straining a test piece by tensile force for the determination of one or more of the mechanical properties defined in Clause 3.
The test is carried out at a temperature higher than 35 °C, which means at temperatures higher than room temperature as specified in ISO 6892-1.
6 Test piece
For requirements concerning test pieces, see ISO 6892-1.
NOTE Additional examples of test pieces are given in Annex A.
7 Determination of original cross-sectional area (So)
For requirements concerning determination of the original cross-sectional area, see ISO 6892-1.
NOTE This parameter is calculated from measurements taken at room temperature.
8 Marking the original gauge length (Lo)
For requirements concerning marking the original gauge length, see 1506892-1.
9 Apparatus
9.1 Force-measurIng system.
The force-measuring system of the testing machine shall be calibrated in accordance with ISO 7500-1. class 1, or better.
9.2 Extensometer.
For the determination of proof strength (plastic or total extension), the used extensometer shall be in accordance with ISO 9513, class 1 or better, in the relevant range. For other properties (with higher extension), an ISO 9513 class 2 extensometer in the relevant range may be used
The extensometer gauge length shall be not less than 10 mm and shall correspond to the central portion of the parallel length.
Any part of the extensometer projecting beyond the furnace shall be designed or protected from draughts so that fluctuations in the room temperature have only a minimal effect on the readings. It is advisable to maintain reasonable stability of the temperature and speed of the air surrounding the testing machine.BS EN ISO 6892-2 pdf free download.