GB/T 231.3-2002 金属布氏硬度试验 第3部分：标准硬度块的标定

ICS77.040.10

H22

中华人民共和国国家标准

GB/T231.3-2002

代替GB/T6270-1997

金属布氏硬度试验

第3部分:标准硬度块的标定

MetallicBrinellhardnesstest-

Part3:Calibrationofhardnessreferenceblocks

(ISO6506-3:1999，Metallicmaterials-Brinellhardnesstest-

Part3:Calibrationofreferenceblocks，MOD)

2002-11-25发布2003-05-01实施

中华人民共和国发布

国家质量监督检验检疫总局

GB/T231.3-2002

目次

月U舀。。·，····。····。·······。····················································。·，······。···············。····……”。。·……皿

引言··························································································，·····················……1V

1范围····················································，，······‘···················，·······················……1

2规范性引用文件.·······……1

3标准块的制造···，，·····，，，，···············，·，，，，，·················，，，，·…，.··············，……，，，1

4标准机··‘····················，··························，··，，，··················································……2

5标定方法···················································，，···················································……，3

6压痕数目········································································································……3

7硬度均匀度······································································……，，.·······.·······.·……3

8标志·

一

9有效性

GB/T231.3-2002

前言

GB/T231《金属布氏硬度试验》分为如下三个部分:

—第1部分:试验方法;

—第2部分:硬度计的检验与校准;

—第3部分:标准硬度块的标定。

本部分为GB/T231的第3部分。

本部分修改采用国际标准ISO6506-3:1999《金属材料布氏硬度试验第3部分:标准块的标定I

(英文第一版)。

本部分是根据ISO6506-3:1999采用翻译法起草的，在文本结构和技术内容方面与ISO6506-3:

1999一致，存在小的差异如下:

—用中文惯用的小数点符号“”代替英文采用的小数点符号“，，’;

—为与我国相关硬度标准统一，改变了标准名称，合并了其引导要素和主体要素，统称为“金属布

氏硬度试验，’;

—重新编写了前言，代替ISO6506-3的前言;

—对于ISO6506-3所