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
Published
(Edition 2, 1990)
This publication was last reviewed and confirmed in 2019.
Therefore this version remains current.
Abstract
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.
Life cycle
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Previously
WithdrawnISO 2624:1973
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Now