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Chinese Standard: GB/T 38720-2020

Microstructure examination of medium-carbon steel and medium-carbon alloy structural steel after quenching

全国热处理标准化技术委员会(SAC/TC 75)

本标准规定了常用中碳碳素结构钢与中碳合金结构钢原材料及要求、检验要求、淬火显微组织等级与评定等内容。
本标准适用于中碳碳素结构钢与中碳合金结构钢制零件淬火、回火后显微组织的检验与评定。
本标准不适用于中碳碳素结构钢与中碳低合金结构钢制零件淬火回火后含有脱碳、过烧的显微组织以及在等温淬火状态下的显微组织的评定。

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