Analysis of requirements of foreign classification communities to castings of corrosion-resistant steels used in shipbuilding

The aim of this paper is to analyze the requirements of foreign classification societies for 2023–2024 to stainless steel castings intended for use in shipbuilding. The rules of six foreign organizations (Indian register of shipping, China classification society, Bureau Veritas, American bureau of shipping, Det Norske Veritas, Registro Italiano navale) developing and applying technical standards in the field of design, construction and supervision of offshore facilities were studied. The mechanical properties of modern cast iron-based alloys, their chemical compositions, possible defects and requirements for corrosion tests were presented. Information and recommendations were given for the production of stainlesssteel castings widely used in shipbuilding and developed recently. The paper gives valuable information that helps to make reasonable requirements to the organization of shipbuilding production and to select shipbuilding materials with specified properties that ensure the required service life. Compliance with the requirements contributes to safety of navigation, protection of human life and environment.

On the basis of the research, requirements to castings from corrosion-resistant iron-based alloys and suggestions for implementation in the regulatory documents of the Maritime Register of Shipping (RS) were developed.

1. Babakov A.A., Pridancev M.V. Korrozionnostojkie stali i splavy [Corrosion-resistant steels and alloys]. Moscow: Metallurgiya, 1971. 320 p.

2. Marukovich E.I., Karpenko M.I. Litejnye splavy i tekhnologii [Casting alloys and technologies]. Minsk: Belorusskaya navuka, 2022. 442 p.

3. Grishina E. Problema klassifikatsii stali v Rossii i Evrope [The problem of steel classification in Russia and Europe]. Obrabotka metallov: tekhnologiya, oborudovanie, instrumenty [Metalworking: technology, equipment, tools]. 2008. Vol. 40, No. 3. P. 31 – 35.

4. American Bureau of Shipping. Requirements for Materials and Welding for Stainless Steels, 2022. 150 p.

5. Requirements for Materials and Welding for Stainless Steels / American Bureau of Shipping. 2022. 150 p.

6. Rules for the Classification of Ship / Registro Italiano Navale. 2023. 308 p.

7. Rules on Materials and Welding for the Classification of Marine Units / Bureau Veritas. 2024. 368 p.

8. Rules and Regulations for the Construction and Classification of Steel Ships / Indian Register of Shipping. 2023. 2291 p.

9. Rules for materials and welding / China Classification Society. 2021. 325 p.

10. Metallic Materials: Offshore Standard DNV-OS-B101 / Det Norske Veritas AS. 2012. 61 p.

11. Kartonova L.V., Kechin V.A. Vybor materialov i sposobov izgotovleniya izdelij [Selection of materials and manufacturing methods: study guide]. Vladimir: VlGU, 2022. 160 p.

12. Chizhova E.V., Tsibizov P.N. Modelirovanie processa lit'ya nerzhaveyushchikh stalei s tsel'yu snizheniya tochechnykh poverhnostnykh defektov otlivok [Modeling the stainless-steel casting process to reduce point surface defects in castings]. Modeli, sistemy, seti v ekonomike, tekhnike, prirode i obshchestve [Models, systems, networks in economics, technology, nature and society]. 2014. Vol. 12, No. 4. P. 167 — 173.

13. Knisz J., Eckert R., Gieg L.M., Koerdt A. et al. Microbiologically influenced corrosion – more than just microorganisms. FEMS Microbiology Reviews. 2023. Vol. 47, No. 5. DOI 10.1093/femsre/fuad041.