標準號：BS EN ISO 2624-1995
中文標準名稱：銅及銅合金.平均粒度估計
英文標準名稱：Copper and copper alloys - Estimation of average grain size
標準類型：H62
發布日期：1995/9/15 12:00:00
實施日期：1995/9/15 12:00:00
中國標準分類號：H62
國際標準分類號：77.120.30
適用范圍：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.