The main materials for stainless steel chain hoists are 304 stainless steel and 316 stainless steel, which have become the core materials of this type of equipment due to their excellent corrosion resistance and mechanical properties. The following is a detailed analysis of these two materials:

1. 304 stainless steel: a universal corrosion-resistant material

Ingredients and characteristics:

304 stainless steel (containing 18% chromium and 8% nickel) is the most widely used stainless steel material, with the following advantages:

Corrosion resistance: It can resist corrosion from the atmosphere, fresh water, weak acids (such as acetic acid), and organic compounds, and is suitable for humid, acidic, and alkaline environments.

Mechanical properties: With a tensile strength of 520-750MPa and high toughness, it can withstand huge tensile forces and is suitable for heavy-duty lifting.

Processability: Easy to punch, weld, and manufacture complex structural components (such as chains and gears for chain hoists).

Cost effectiveness: Compared to 316 stainless steel, 304 has a lower price and higher cost-effectiveness, making it the preferred choice for industries such as food processing, chemical engineering, and construction.

Application scenarios:

Food processing: comply with hygiene standards and avoid rusting and contaminating products.

Chemical industry: Resist weak acid and alkali corrosion and extend equipment life.

Construction site: Adapt to humid environments and reduce maintenance costs.

2. 316 stainless steel: high-end corrosion-resistant material

Ingredients and characteristics:

316 stainless steel with 2-3% molybdenum added on top of 304 significantly improves corrosion resistance, especially suitable for strong corrosive environments:

Chemical corrosion resistance: able to resist corrosion from seawater, chloride ions, and strong acids (such as sulfuric acid and hydrochloric acid).

High temperature resistance: Can be used for a long time in environments below 650 ℃, suitable for high-temperature work scenarios.

Pitting corrosion resistance: Molybdenum element forms a dense oxide film to prevent local corrosion (such as crevice corrosion).

Application scenarios:

Marine engineering: resistant to seawater erosion, used for lifting ships and ports.

Pharmaceutical manufacturing: Complies with cleanroom standards to avoid metal ion contamination of drugs.

Chemical raw material production: Maintain stability when exposed to highly corrosive chemicals.

Material selection criteria

Environmental adaptability:

In areas with dry air, 201 stainless steel (lower cost but weaker corrosion resistance) can be selected.

Wet coastal areas: prioritize 304 stainless steel.

Strong corrosive environment (such as seawater, chemical workshops): 316 stainless steel must be used.

Performance requirements:

If anti magnetic (such as electromagnetic interference environment) is required, aluminum alloy chain block is an alternative solution, but its corrosion resistance is much lower than stainless steel.

304 stainless steel is sufficient in most industrial scenarios, while 316 stainless steel is used in extreme corrosive environments.

Quality assurance measures

Material certification:

High quality stainless steel chain hoists need to pass ISO9001, CE and other certifications to ensure that the material composition meets the standards (such as 304 stainless steel with a chromium content of ≥ 18%).

Surface treatment:

Polishing process reduces surface roughness, lowers the risk of foreign object adhesion, and enhances self-cleaning ability.

Structural optimization:

The sealing design prevents corrosive media from entering the interior and extends its service life.

The main equipment produced by Hebei Makita: stage electric hoist, electric chian hoist, wire rope electric hoist，Hand chain hoist, lever hoist, pneumatic hoist and other lifting equipment