BS EN ISO 2624-1995 铜及铜合金.平均粒度估计

标准号：BS EN ISO 2624-1995
中文标准名称：铜及铜合金.平均粒度估计
英文标准名称：Copper and copper alloys - Estimation of average grain size
标准类型：H62
发布日期：1995/9/15 12:00:00
实施日期：1995/9/15 12:00:00
中国标准分类号：H62
国际标准分类号：77.120.30
适用范围：This International Standard 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 respective procedures are termed the comparison procedure, the intercept procedure and the planimetric pro-cedure. The comparison procedure (comparing the specimen with a standard chart) is most convenient and is sufficiently accurate for most commercial purposes. Higher degreees of accuracy in estimating grain size are ob-tainable by using the intercept (Heyn) or planimetric (Jeffries) procedures. In cases of dispute, it is recommended that the use of one of these procedures be agreed between the parties. For material with non-equiaxial structures it is recommended that the intercept procedure be used.