International Standard
ISO 6892-4:2015
Metallic materials — Tensile testing — Part 4: Method of test in liquid helium
Reference number
ISO 6892-4:2015
Edición 1
2015-10
International Standard
Vista previa
ISO 6892-4:2015
51516
No disponible en español
Publicado (Edición 1, 2015)
Esta norma se revisó y confirmó por última vez en 2021. Por lo tanto, esta versión es la actual.

ISO 6892-4:2015

ISO 6892-4:2015
51516
Idioma
Formato
CHF 96
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Resumen

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.

Informaciones generales

  •  : Publicado
     : 2015-10
    : Norma Internacional confirmada [90.93]
  •  : 1
     : 13
  • ISO/TC 164/SC 1
    77.040.10 
  • RSS actualizaciones

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