Material Comparison
Side-by-side comparison tables for stainless steel, duplex, and nickel alloy materials. Chemical composition, mechanical properties, corrosion resistance, and cost comparison.
304L vs 316L Stainless Steel Pipe
Both are austenitic, but 316L adds 2-3% molybdenum for dramatically better pitting resistance. For chemical plants, offshore, and desalination, 316L is the minimum standard.
Compare Materials316L vs Duplex 2205 Stainless Steel Pipe
2205 offers double the yield strength of 316L (450 vs 170 MPa) and PREN ≥ 35 vs 26. 2205's duplex microstructure also provides immunity to chloride SCC.
Compare MaterialsDuplex 2205 vs Super Duplex 2507
2507 adds more chromium, molybdenum, and nitrogen for PREN ≥ 40 vs 2205's 35. The higher strength (550 vs 450 MPa) and superior hot seawater resistance justify the premium for critical subsea and deepwater.
Compare Materials316L vs 904L Super Austenitic Stainless Steel
904L adds copper (1.5%) and more molybdenum (4.5%) for superior sulfuric acid resistance. PREN ≥ 43 vs 316L's 26. The premium over 316L is 2-3× but lasts 5-10× longer in acid service.
Compare MaterialsIncoloy 825 vs Inconel 625
825 is optimized for sulfuric and phosphoric acid resistance with copper addition. 625 is the higher-strength option with niobium for fatigue resistance to 980°C. Both handle severe corrosion but for different environments.
Compare MaterialsHastelloy C276 vs Incoloy 825
C276 is the universal corrosion-resistant alloy for the most aggressive mixed-acid environments (PREN > 65). 825 is more economical for sulfuric acid at moderate temperatures. Choose C276 when nothing else survives, 825 when sulfuric acid is the main challenge.
Compare Materials321 vs 316L Stainless Steel
321 adds titanium for high-temperature strength (up to 900°C) but lacks molybdenum — giving it lower pitting resistance than 316L. The right choice for boiler tubes and exhaust systems operating above 500°C.
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