Standard No.:	GB/T 5989-2008
English Name:	Refractory products - Determination of refractoriness-under-load - Differential method with rising temperature
Chinese Name:	耐火材料 荷重软化温度试验方法 示差升温法
Chinese Classification:	Q40    Fireproof material in general
Professional Classification:	GB    National Standard
Source Content Issued by:	AQSIQ; SAC
Issued on:	2008-06-03
Implemented on:	2008-12-1
Status:	superseded
Superseded by:	GB/T 5989-2023
Superseded on:	2023-12-1
Superseding:	GB/T 5989-1998 Refractory products-Determination of refractoriness-under -load - Differential-with rising temperature
Target Language:	English
File Format:	PDF
Word Count:	4000 words
Translation Price(USD):	120.0
Delivery:	via email in 1~3 business day

本标准规定了示差法测定致密和隔热定形耐火材料在恒定压力下按规定的制度升温而产生变形（荷重软化温度）的方法。本试验最高温度可进行到1700℃。本标准与原ＧＢ／Ｔ５９８９—１９９８相比，主要技术差异如下：
———对标准名称作了修改；
———按ＩＳＯ１８９３：２００５重新定义标准的适用范围；
———按ＩＳＯ１８９３：２００５增加了部分规范性引用文件；
———按ＩＳＯ１８９３：２００５将部分“注”变成了条文。