Corrosion Damage Behavior of 30CrMnMoRE Steel in the Marine Atmospheric Environment for 1.5 Years

ZHANG Haoyue; LUO Laizheng; WANG Jiankun; LIU Jianhong; WAN Jun; ZHANG Lunwu

doi:10.7643/issn.1672-9242.2026.03.005

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Equipment Environmental Engineering ›› 2026, Vol. 23 ›› Issue (3) : 38-44. DOI: 10.7643/issn.1672-9242.2026.03.005

Special Issue—Equipment Service Environment and Performance Testing

Corrosion Damage Behavior of 30CrMnMoRE Steel in the Marine Atmospheric Environment for 1.5 Years

ZHANG Haoyue^1,2, LUO Laizheng^1,2, WANG Jiankun^1,2, LIU Jianhong^1,2, WAN Jun^1,2, ZHANG Lunwu^1,2,*

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Abstract

The work aims to systematically investigate the corrosion damage behavior of 30CrMnMoRE steel in the marine atmospheric environment. A 1.5-year marine atmospheric exposure test was conducted on 30CrMnMoRE steel at a test station in Hainan. The corrosion behavior and mechanism of the material in the marine atmospheric environment were comprehensively analyzed based on macroscopic and microscopic corrosion morphologies, corrosion weight loss, tensile properties, etc. 30CrMnMoRE steel underwent general corrosion in the marine atmospheric environment, with its corrosion products appearing reddish-brown and gradually peeling off from the surface over time. The average corrosion rate showed a decreasing trend with the increasing exposure time, while the average corrosion depth increased. The general corrosion behavior had a significant adverse effect on the tensile properties of 30CrMnMoRE steel. After 1.5 years of exposure, the tensile strength and elongation after fracture decreased by 14.0% and 78.9%, respectively, indicating that the impact of corrosion on material ductility was much greater than that on tensile strength. In summary, 30CrMnMoRE steel exhibits poor adaptability in the marine atmospheric environment, so effective protective measures must be taken during actual use to ensure its long-term reliability in such conditions.

Key words

marine atmospheric environment / 30CrMnMoRE special structural steel / corrosion behavior / tensile properties / corroded cross-sectional morphology / energy spectrum analysis / corrosion rate

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ZHANG Haoyue, LUO Laizheng, WANG Jiankun, LIU Jianhong, WAN Jun, ZHANG Lunwu. Corrosion Damage Behavior of 30CrMnMoRE Steel in the Marine Atmospheric Environment for 1.5 Years[J]. Equipment Environmental Engineering. 2026, 23(3): 38-44 https://doi.org/10.7643/issn.1672-9242.2026.03.005

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