ISO 6892-4:2015
Current
The latest, up-to-date edition.
Metallic materials — Tensile testing — Part 4: Method of test in liquid helium
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English
29-09-2015
ISO 6892-4:2015 specifies the method of tensile testing of metallic materials in liquid helium (the boiling point is ?269 °C or 4,2 K, designated as 4 K) and defines the mechanical properties that can be determined.
This part of ISO 6892 may apply also to tensile testing at cryogenic temperatures (less than ?196 °C or 77 K), which requires special apparatus, smaller test pieces, and concern for serrated yielding, adiabatic heating, and strain-rate effects.
To conduct a tensile test according to this part of ISO 6892 at 4 K, the test piece installed in a cryostat is fully submerged in liquid helium (He) and tested using displacement control at a nominal strain rate of 10−3 s−1 or less.
NOTE The boiling point of the rare 3He isotope is 3,2 K. Usually, the tests are performed in 4He or a mixture of 3He and 4He with a high concentration of 4He. Therefore, the temperature is, as designated before, 4 K.
| DevelopmentNote |
Supersedes ISO/DIS 6892-4 and ISO 19819. (09/2015)
|
| DocumentType |
Standard
|
| Pages |
13
|
| PublisherName |
International Organization for Standardization
|
| Status |
Current
|
| Supersedes |
| Standards | Relationship |
| BS ISO 6892-4:2015 | Identical |
| ISO 6892-3:2015 | Metallic materials — Tensile testing — Part 3: Method of test at low temperature |
| ISO 6892-1:2016 | Metallic materials — Tensile testing — Part 1: Method of test at room temperature |
| ISO 9513:2012 | Metallic materials — Calibration of extensometer systems used in uniaxial testing |
| ISO 7500-1:2015 | Metallic materials — Calibration and verification of static uniaxial testing machines — Part 1: Tension/compression testing machines — Calibration and verification of the force-measuring system |
| ASTM E 1450 : 2016 : REDLINE | Standard Test Method for Tension Testing of Structural Alloys in Liquid Helium |
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