1.Core influencing factors

The corrosion resistance of steel wire ropes is mainly determined by the following three factors:

Material: Ordinary carbon steel wire ropes have poor corrosion resistance, while stainless steel (such as 304, 316) or galvanized steel has significantly higher corrosion resistance.

Surface treatment: Surface galvanization (hot-dip galvanizing, electro-galvanizing), plastic coating (PVC, PE) or plating with other metals can significantly enhance the corrosion resistance.

Usage environment: In a dry indoor environment, ordinary steel wire ropes can also be used for a long time. However, in damp, Marine (high salt spray), and chemical (corrosive gas) environments, highly corrosion-resistant types must be used.

2. Differences in corrosion resistance among common types

Under the same harsh environment (such as by the seaside), there are significant differences in the corrosion resistance and service life of different types of steel wire ropes

Ordinary smooth carbon steel wire rope: It has the poorest corrosion resistance and a typical lifespan of only 1-2 years in coastal environments.

Electro-galvanized carbon steel wire rope: Moderate corrosion resistance, with a typical lifespan of about 2 to 3 years in coastal environments.

Hot-dip galvanized carbon steel wire rope: It has good corrosion resistance and a typical service life of 3 to 5 years in coastal environments.

304 stainless steel wire rope: It has good corrosion resistance and a typical service life of 5 to 8 years in coastal environments.

316 stainless steel wire rope: Excellent corrosion resistance, with a typical service life of up to 8 to 15 years in coastal environments.

Coated (PVC) steel wire rope: Excellent corrosion resistance, and its service life is directly related to the internal base material and coating thickness.