Stainless steel is critical for filtration systems due to its corrosion resistance and durability. As a specialist in stainless steel filtration piping, OASIS summarizes the key types and their selection guidelines below.
1. Austenitic Stainless Steel
Composition: ~18% Cr, 8–25% Ni (may add Mo/Cu/Ti, e.g., 304/316L).
Key Properties: Non-magnetic, high toughness, excellent corrosion resistance.
Filtration Use: Ideal for hygiene-critical or mild-corrosion environments (food processing, pharma, clean water).
OASIS Tip: 316L (low-carbon) avoids intergranular corrosion after welding—perfect for sanitary pipelines.
2. Martensitic Stainless Steel
Composition: Higher carbon, ~13% Cr.
Key Properties: Magnetic, high strength/hardness, poor weldability.
Filtration Use: Rare in piping; used for wear-resistant components (valve cores, small fittings).
3. Ferritic Stainless Steel
Composition: 15–30% Cr, low/no Ni.
Key Properties: Good thermal stability, cost-effective.
Filtration Use: Suitable for low-corrosion, thermal applications (e.g., some heat exchangers).
OASIS Tip: Avoid high chloride environments—best for mild conditions.
4. Duplex Stainless Steel (Added for High Demand)
Composition: ~22% Cr, ~5% Ni, ~3% Mo (e.g., 2205).
Key Properties: High strength, excellent chloride corrosion resistance (better than austenitic).
Filtration Use: High-corrosion scenarios (seawater treatment, chemical wastewater).
Selection Conclusion
Choose based on corrosion level (e.g., chloride concentration), temperature, and pressure.
OASIS supports clients with material testing (e.g., PMI) and tailored solutions to ensure longevity and cost-effectiveness.
OASIS – Your Trusted Partner in Stainless Steel Filtration Piping.
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