What stainless steel grades prevent corrosion from fish emulsion?

Fish emulsion, a common organic fertilizer and soil amendment, contains salts and acids that can accelerate corrosion in metals. To prevent degradation, specific stainless steel grades are recommended due to their superior corrosion resistance.

The most effective grades include:

1. 316 Stainless Steel: Contains molybdenum (2-3%), enhancing resistance to chlorides and organic acids found in fish emulsion. Ideal for tanks and piping.

2. 2205 Duplex Stainless Steel: Combines austenitic and ferritic properties, offering high strength and resistance to pitting and crevice corrosion.

3. 904L Stainless Steel: A high-alloy grade with exceptional resistance to aggressive environments, though less common due to cost.

For long-term durability in fish emulsion applications, 316 or 2205 stainless steel are the top choices, balancing performance and affordability. Regular maintenance and proper passivation can further extend their lifespan.