ISO 2624-1990 铜和铜合金 平均晶粒度的测定方法

标准号：ISO 2624-1990
中文标准名称：铜和铜合金 平均晶粒度的测定方法
英文标准名称：Copper and copper alloys; estimation of average grain size
标准类型：H24
发布日期：1999/12/31 12:00:00
实施日期：1990/2/1 12:00:00
中国标准分类号：H24
国际标准分类号：77.120.30
适用范围：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.