Standard No.:	GB/T 12773-2021
English Name:	Valve steel and superalloy bars for internal combustion engines
Chinese Name:	内燃机气阀用钢及合金棒材
Chinese Classification:	H44    Profile steel and deformed steel
Professional Classification:	GB    National Standard
ICS Classification:	77.140.60 77.140.60    Steel bars and rods 77.140.60
Issued by:	SAMR; SAC
Issued on:	2021-05-21
Implemented on:	2021-12-1
Status:	valid
Superseding:	GB/T 12773-2008 Valve steel and superalloy bars for internal combustion engines
Language:	English
File Format:	PDF
Word Count:	8500 words
Price(USD):	255.00
Delivery:	via email in 1~3 business day

本文件规定了内燃机气阀用钢及合金的定义和术语、分类、订货内容、尺寸、外形及重量、技术要求、试验方法、检验规则、包装、标志及质量证明书。本文件适用于制造内燃机气阀用直径不大于120 mm的热轧、锻制棒材和直径不大于35 mm的冷拉钢、银亮钢、合金棒材和盘条。