GB/T 10421-2002 in English

《GB/T 10421-2002烧结金属摩擦材料 密度的测定》由604-1（中国机械工业联合会）归口，主管部门为中国机械工业联合会。
本标准规定了烧结金属摩擦材料密度的测定方法。本标准适用于不带芯板的摩擦材料密度的测定。

Sintered metal friction materials - Determination of density

1 Scope

This standard specifies a method to determine the density of sintered metal friction materials.

This standard is applicable to the determination of density of friction materials without the core veneer.

2 Normative references

The following standards contain provision which, through reference in this standard, constitute provisions of this standard. At the time of publication, all editions cited are valid. All standards are subject to revision, and all parties using this standard are encouraged to investigate the possibility of applying the latest editions of the following standards.

GB/T 3141-1994 Industrial liquid lubricants - ISO viscosity classification (eqv ISO 3448:1992)
GB/T 5163-1985 Permeable sintered metal materials - Determination of density (eqv ISO 2738:1987)
GB/T 5165-1985 Permeable sintered metal materials - Determination of oil content (eqv ISO 2737:1973)

3 Specimen

3.1 For parts with different friction layer thickness, prepare the specimen according to the following methods:

Foreword I
1 Scope
2 Normative references
3 Specimen
4 Test procedures
5 Test results
6 Test report