ISO 6892-2-2011 pdf free download.Metallic materials – T ensile testing – Part 2: Method of test at elevated temperature.
This part of ISO 6892 specifies a method of tensile testing of metallic materials at temperatures higher than room temperature.
2 Normative references
The following referenced documents are indispensable for the application 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 6892-1:2009, Metallic materials — Tensile testing — Part 1: Method of test at room temperature
ISO 7500-1, Metallic materials — Verification of static uniaxial testing machines — Part 1:
Tension/compression testing machines — Verification and calibration of the force-measuring system
ISO 9513, Metallic materials — Calibration of extensometers used in uniaxial testing
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 6892-1:2009 apply with the following exceptions and supplements.
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).
3.1 original gauge length L。 gauge length measured at room temperature before heating of the test piece and before application of force
3.2 percentage elongation after fracture A permanent elongation at room temperature of the gauge length after fracture (Lu- Lo), expressed as a percentage of the original gauge length (Lo)
NOTE For further details, see IsO 6892-1:2009.
3.3 extensometer gauge length Le length within the parallel portion of the test piece used for the measurement of extension by means of an extensometer
3.4 extension increase in the extensometer gauge length (Lg) at a given moment during the test
4 Symbols and designations
Iso 6892-1:2009, Table 1 provides an extensive listing of symbols and their related designations.
The additional symbols used in this part of ISO 6892 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 6892-1:2009, Clause 6.
NOTE Additional examples of test pieces are given in Annex A.
7 Determination of original cross-sectional area (S0)
For requirements concerning determination of the original cross-sectional area, see ISO 6892-1:2009, Clause 7.
NOTE This parameter is calculated from measurements taken at room temperature.
8 Marking the original gauge length (L0)
For requirements concerning marking the original gauge length, see ISO 6892-1:2009. Clause 8.
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 dass 2 extensometer in the relevant range may be used.ISO 6892-2 pdf download.
Tags: Metallic materials
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