Obsolete

GB/T 9790-1988Metallic and related coatings. Vickers and knoop microhardness tests (English PDF)

金属覆盖层及其他有关覆盖层维氏和努氏显微硬度试验

GB/T 9790 | Evolution and historical versions

Std ID	Title	Status
GB/T 9790-2021	Metallic materials - Vickers and Knoop microhardness tests of metallic and other inorganic coatings	Obsolete
GB/T 9790-1988	Metallic and related coatings. Vickers and knoop microhardness tests	Obsolete

GB/T 9790-1988 is obsolete. It has been replaced by GB/T 9790-2021. This page sells the obsolete edition, for projects and contracts that still cite it.

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Issued by

State Bureau of Technical Supervision

Level / Type

National · Recommended

Issue date

September 5, 1988

Implementation date

September 1, 1989

Scope

GB/T 9790-1988 is the English-translated version of 金属覆盖层及其他有关覆盖层维氏和努氏显微硬度试验.

GB/T 9790-1988 is the Chinese national standard "Metallic and related coatings. Vickers and knoop microhardness tests". It was issued on September 5, 1988 by the State Bureau of Technical Supervision, and took effect on September 1, 1989. It is obsolete: it has been replaced by GB/T 9790-2021.

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Document preview — GB/T 9790-1988

National Standard of the People's Republic of China

Issued by: State Bureau of Technical Supervision

Document data

1 Document data

Sector: National standard (Recommended).

Issuing body: State Bureau of Technical Supervision.

Date of issue: 1988-09-05.

Date of implementation: 1989-09-01.

Status: obsolete, replaced by GB/T 9790-2021.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — all pages — is available in the English PDF.

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