Choose stainless steel for seaside buildings

Coastal buildings are suitable for using 304 and 316L stainless steel. These two types of stainless steel have extremely strong resistance to salt spray corrosion, which can resist the erosion of sea breeze and salt spray, ensuring the long-term durability of buildings.

Corrosion Resistance Comparison: 304 vs. 316 Stainless Steel

Corrosion Scenario	304 Stainless Steel	316 Stainless Steel	Key Difference Factor
General Environment	Resistant to atmospheric corrosion, fresh water, and neutral solutions (e.g., water, alcohol). Typical Applications: Kitchen sinks, thermal mugs.	Similar to 304 but with slightly better corrosion resistance (higher nickel content). Typical Applications: Hospital sterilization equipment, high-end cutlery.	Higher nickel content in 316 enhances general durability.
Chloride Corrosion	Moderate resistance; prone to rusting with long-term exposure to seawater, brine, or swimming pool water. Risk Scenarios: Marine environments, salt storage.	Significantly more resistant to chloride corrosion (e.g., seawater, saltwater, sodium chloride solutions). Typical Applications: Ship components, desalination plants.	Addition of molybdenum (Mo) in 316 inhibits pitting and crevice corrosion caused by chlorides.
Acid/Alkali Corrosion	Resistant to dilute acids (e.g., acetic acid) and weak alkalis. Limitations: Not suitable for strong acids/alkalis.	Resistant to stronger acids (e.g., sulfuric acid, phosphoric acid) and concentrated alkalis (e.g., sodium hydroxide). Typical Applications: Chemical reactors, pharmaceutical equipment.	Molybdenum in 316 forms a stable oxide layer in harsh chemical environments.
High-Temperature Oxidation	Oxidation resistance up to 870°C (1598°F). Applications: Heat exchangers, low-temperature furnaces.	Oxidation resistance up to 980°C (1796°F) with better stability at high temperatures. Applications: Aerospace

 

What is 304 stainless steel?

304 stainless steel is a universal stainless steel with good corrosion resistance, heat resistance, and processability. It is suitable for general corrosive environments, but in high salinity environments such as the seaside, the corrosion resistance of 304 stainless steel may not be as good as 316L stainless steel

 

What is 316L stainless steel?
316L stainless steel is widely recognized as the "king of sea breeze resistance", with extremely high corrosion resistance, especially resistance to chloride ions. It is widely used in highly corrosive environments such as chemical plants, offshore platforms, and coastal power plants. 316L stainless steel contains molybdenum element, which further enhances its corrosion resistance and is suitable for use in marine environments

 

What are the applicable scenarios for these two types of stainless steel?

Away from power plants and port terminals, coastal photovoltaic power plants, seaside office buildings, shopping malls, and hotels