Reference number
ISO 2624:1990
ISO 2624:1990
© ISO 2024
International Standard
ISO 2624:1990
Copper and copper alloys — Estimation of average grain size
Edition 2
1990-02
1990-02
ISO 2624:1990
7601
Publicado
(Edición 2, 1990)
Esta publicación se revisó y confirmó por última vez en 2019.
Por lo tanto, esta versión es la actual.
Resumen
Specifies three procedures for estimating, and rules for expressing, the average grain size of copper and copper alloys consisting principally of a single phase. The comparison procedure (comparing the specimen with a standard chart) is most convenient and is sufficiently accurate for most commercial purposes. In cases of dispute the use of the Heyn or Jeffries procedures (intercept procedure and planimetric procedure, respectively) having higher degrees of accuracy is recommended.
Ciclo de vida
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Anteriormente
RetiradaISO 2624:1973
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Ahora