ISO 6892-3-2015 pdf free.Metallic materials一Tensile testing一 Part 3: Method of test at low temperature.
This part of ISO 6892 specifies a method of tensile testing of metallic materials at temperatures between +10 °C and -196 °C.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. 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, Metallicmaterials— Verification ofstaticuniaxialtestingmachines— Part 1: Tension/compression testing machines — Verification and calibration of the force-measuring 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 6892-1:2009 and the following apply.
In general, all test piece geometries/dimensions are based on measurements taken at room temperature. The exception can be the extensometer gauge length (see 3).
NOTE The following properties are generally not determined at low temperature unless required by relevant specifications or agreement:
— permanent set strength (R1);
— percentage permanent elongation;
— percentage permanent extension;
— percentage yield point extension (Ae);
— percentage total extension at maximum force (Agt);
— percentage plastic extension at maximum force (Ag);
— percentage total extension at fracture (Ar).
3.1 original gauge length L0 gauge length measured at room temperature before cooling of the test piece and before application of force
3.2 percentage elongation after fracture A permanent elongation of the gauge length, measured at room temperature, after fracture (L-L0), expressed as a percentage of the original gauge length (L0)
Note ito entry: For further details, see ISO 6892-1:2009.
3.3 extensometer gauge length Le initial extensometer gauge length used for measurement of extension by means of an extensometer
3.4 extension increase in the extensometer gauge length (Le) at a given moment during the test
3.4.1 percentage extension extension (i4) expressed as a percentage of the extensometer gauge length (Le)
3-5 percentage reduction of area z maximum change in cross-sectional area which has occurred during the test (S0-S), expressed as a percentage of the original cross-sectional area (S0), where S0 and S are calculated from the dimensions at room temperature
3.6 stress R force at any moment during the test divided by the original cross-sectional area (S0) of the test piece
Note 1 to entry: All stresses referenced in this part of ISO 6892 are engineering stresses, calculated using the cross-sectional area of the test piece derived from dimensions measured at room temperature.
3.7 soaking time ts time taken to stabilize the temperature of the test piece prior to mechanical loading.ISO 6892-3 pdf download.
Tags: Metallic materials
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