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Database: 189759 (19 Oct 2025)
HB5022-2023 English PDF
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HB 5022-2023
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(Classification and evaluation of metallographic structure of nitrided and nitrocarburized aviation steel parts)
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HB 5022-2023
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Basic data
Standard ID
HB 5022-2023 (HB5022-2023)
Description (Translated English)
(Classification and evaluation of metallographic structure of nitrided and nitrocarburized aviation steel parts)
Sector / Industry
Aviation Industry Standard
Classification of Chinese Standard
V10
Date of Issue
2023-12-20
Date of Implementation
2024-07-01
Issuing agency(ies)
Ministry of Industry and Information Technology of the People's Republic of China
Summary
This standard specifies the sample and preparation requirements for nitriding and nitrocarburizing metallographic structure inspection of aviation steel parts, as well as the grading and evaluation of metallographic structures. This standard is applicable to aviation steel parts specified in HB/Z 79 and HB/Z 20023 and 13Cr4Mo4Ni4VA (M50NiL) complex alloy steel, Cr11/Cr12 martensitic heat-strength stainless steel, martensitic precipitation hardening stainless steel and 18Ni series martensite Inspection of the metallographic structure of nitriding and nitrocarburizing of bulk aging steel parts. Other grades of materials and their products may be implemented as a reference when applicable.