标准摘要
[中文适用范围]： 本文件规定了通过比较视觉分析和图像分析技术评估球墨铸铁球化率的测试方法。 本文件提供了球墨铸铁不同级别的球化率和石墨颗粒数的数据，以供目视分析。 [外文原描述]： This document specifies a test method for evaluating nodularity in spheroidal graphite cast irons by comparative visual analysis and image analysis techniques. This document provides figures for different levels of nodularity and graphite particle count of spheroidal graphite cast irons for visual analysis.
英文名称Microstructure of cast irons — Part 4: Test method for evaluating nodularity in spheroidal graphite cast irons