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ISO 2624:1990

Copper and copper alloys — Estimation of average grain size ISO 2624:1990

Publication date:   Jan 18, 1990

General information

90.20 Standard under periodical review   Jul 15, 2024

ISO

ISO/TC 26 Copper and copper alloys

International Standard

77.120.30   Copper and copper alloys | 77.040.99   Other methods of testing of metals

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Scope

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

PREVIOUSLY

WITHDRAWN
ISO 2624:1973

NOW

PUBLISHED
ISO 2624:1990
90.20 Standard under periodical review
Jul 15, 2024