Standard No.:	GB/T 14979-1994
English Name:	Eutectic carbide of steel - Micrographic method using Standard diagrams
Chinese Name:	钢的共晶碳化物不均匀度评定法
Chinese Classification:	H24    Metallographic testing method
Professional Classification:	GB    National Standard
ICS Classification:	77.040.30 77.040.30    Chemical analysis of metals 77.040.30
Issued by:	AQSIQ
Issued on:	1994-4-5
Implemented on:	1995-1-1
Status:	valid
Language:	English
File Format:	PDF
Word Count:	12500 words
Price(USD):	370.0
Delivery:	via email in 1~3 business day

本标准规定了钢的共晶碳化物不均匀度显微评定法的试样的选取与制备、评定方法、标准评级图、试验报告等。本标准适用于经过压力加工变形的莱氏体型高速工具钢、合金工具钢、高碳铬不锈轴承钢高温轴承钢和高温不锈轴承钢中共晶碳化物不均匀度的显微评定。