GB/T 3879-1983
Replaced
GB/T 10421-2025
Active
National standards
GB/T 10421-2025 Sintered metal friction materials—Determination of density
GB/T 10421-2025 Sintered metal friction materials—Determination of density
Basic Information
Standard Code:
GB/T 10421-2025
Standard Type:
National standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
Powder metallurgy materials and products
ICS Name:
Powder metallurgy
Publish Date:
2025-06-30
Implement Date:
2026-01-01
Pages:
16 pages
Scope
This document describes the method for determining the density of sintered metal friction materials.
This document is applicable to the determination of the density of sintered metal friction materials without a core plate.
Development Information
Replace the following standards
Referenced Standards
GB/T 3141-1994 Industrial liquid lubricants—ISO viscosity classification
GB/T 5163-2006 Sintered metal materials, excluding hardmetals—Permeable sintered metal materials—Determination of density, oil content, and open porosity
GB/T 8170-1987 Rules for rounding off of numberical values
GB/T 8170-2008 Rules of rounding off for numerical values & expression and judgement of limiting values
Related Standards
GB/T 4309-1984
Replaced
GB/T 4309-1984 Classification and designation for powder metallurgy materials
GB/T 5124.1-1985
Replaced
GB/T 5124.1-1985 Methods for chemical analysis of hardmetals—The gravimetric method for the determination of total carbon content
GB/T 5124.2-1985
Replaced
GB/T 5124.2-1985 Methods for chemical analysis of hardmetals—The gravimetric method for the determination of free(insoluble) carbon content
GB/T 5124.3-1985
Replaced
GB/T 5124.3-1985 Methods for chemical analysis of hardmetals—The potentiometric method for the determination of cobalt content
GB/T 5124.4-1985
Replaced