GB/T 27751-2011 (English Version) PDF

Standard No.: GB/T 27751-2011
Language: Chinese, Available in English version
Release Date: 2011
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest: GB/T 27751-2011

Scope: This standard specifies the requirements, test methods, inspection rules, marking, packaging, transportation and storage of powder metallurgy and solid-phase sintering silver-nickel-graphite flake electrical contacts. This standard applies to the inspection and acceptance of silver-nickel-graphite flake electrical contacts produced by powder metallurgy and solid phase sintering. This product is mainly used in circuit breakers.

GB/T 27751-2011 Referenced Document

GB/T 26871 Metallographic examination of electrical contact materials
GB/T 26872 Metallographic atlas of electrical contact materials
GB/T 2828.1-2003 Sampling procedures for inspection by attributes--Part 1: Sampling schemes indexed by acceptance quality limit(AQL) for lot-by-lot inspection
GB/T 5586 Test methods for essential property of electrical contact materials*， 2016-02-24 Update
GB/T 5587-2003 Basic shapes,dimensions,symbols and notations of silver based electrical contacts
JB/T 4107.4-1999 Chemical analyse method for electrical contact materials.Determination of silver content in the silver - tungsten ( iodimetry)
JB/T 4107.5-1999 Chemical analyse method for electrical contact materials.Determination of nickel content in the silver - nickel ( ETDA volumetry method)
JB/T 4107.7-1999 Chemical analyse method for electrical contact materials.Determination of carbon content in the silver - graphite ( Determine carbon content by the gas volumetry method)