GB/T 10421-2025烧结金属摩擦材料密度的测定

ICS77.160

CCSH72

中华人民共和国国家标准

GB/T10421—2025

代替GB/T10421—2002

烧结金属摩擦材料密度的测定

Sinteredmetalfrictionmaterials—Determinationofdensity

2025⁃06⁃30发布2026⁃01⁃01实施

国家市场监督管理总局

国家标准化管理委员会发布

GB/T10421—2025

目次

前言··························································································································Ⅲ

1范围·······················································································································1

2规范性引用文件········································································································1

3术语和定义··············································································································1

4原理·······················································································································1

5试剂·······················································································································1

5.1浸渍试剂···········································································································1

5.2液体·················································································································1

6仪器设备·················································································································1

6.1分析天平···········································································································1

6.2称重装置···········································································································2

6.3容器要求···········································································································2

6.4温度计··············································································································2

6.5吊丝·················································································································2

7样品·······················································································································2

8试验步骤·················································································································2

9试验结果·················································································································4

10精密度··················································································································5

10.1重复性·············································································································5

10.2再现性·············································································································5

10.3实验室研究结果·································································································5

11试验报告···············································································································5

附录A（资料性）实验室研究结果····················································································6

图1吊篓法················································································································3

图2吊盘法················································································································3

表1吊丝的最大推荐直径······························································································2

表2蒸馏水在空气中的密度值（标准大气压下）···································································3

表A.1密度试验结果····································································································6

表A.2重复性、再现性计算结果······················································································6

Ⅰ

GB/T10421—2025

前言

本文件按照GB/T1.1—2020《标准化工作导则第1部分：标准化文件的结构和起草规则》的规

定起草。

本文件代替GB/T10421—2002《烧结金属摩擦材料密度的测定》，与GB/T10421—2002相比，

除结构调整和编辑性改动外，主要技术变化如下：

a）更改了本文件中适用范围（见第1章，2002年版的第1章）；

b）增加了术语和定义章节（见第3章）；

c）增加了原理章节（见第4章）；

d）增加了试剂章节（见第5章）；

e）增加了仪器设备章节（见第6章）；

f）更改了分析天平的精度要求（见6.1，2002年版的4.1）；

g）增加了“吊丝的最大推荐直径”（见表1）；

h）更改了试样要求（见第7章，2002年版的第3章）；

i）更改了所引用标准的条号（见7.4，2002年版的3.4）；

j）更改了试验步骤中的部分表述（见第8章，2002年版的第4章）；

k）增加了称量装置示意图（见图1、图2）；

l）增加了“蒸馏水在空气中的密度值（标准大气压下）”（见表2）；

m）更改了试验结果章节（见第9章，2002年版的第5章）；

n）增加了精密度章节（见第10章）。

请注意本文件的某些内容可能涉及专利。本文件的发布机构不承担识别专利的责任。

本文件由中国机械工业联合会提出并归口。

本文件起草单位：杭州前进齿轮箱集团股份有限公司、黄石赛福摩擦材料有限公司、北京优材百慕

航空器材有限公司。

本文件主要起草人：杨水余、张国洪、吕波、王秀飞、闫燕、蒋俊勇、何晨、许成法、徐鲲。

本文件于1989年首次发布为GB/T10421—1989，2002年第一次修订，本次为第二次修订。

Ⅲ

GB/T10421—2025

烧结金属摩擦材料密度的测定

1范围

本文件描述了烧结金属摩擦材料密度的测定方法。

本文件适用于不带芯板的烧结金属摩擦材料密度的测定。

2规范性引用文件

下列文件中的内容通过文中的规范性引用而构成本文件必不可少的条款。其中，注日期的引用文

件，仅该日期对应的版本适用于本文件；不注日期的引用文件，其最新版本（包括所有的修改单）适用于

本文件。