Duplex 2205 vs. SUS316: Which Alloy Fits Your Project?

Duplex 2205: The High-Performance Choice

: Double strength of 316, excellent resistance to pitting, crevice, and stress corrosion cracking (SCC), higher molybdenum/nitrogen content.

: More expensive, harder to form/weld (needs controlled heat), not ideal for prolonged sub-zero or very high-temp service.

: Offshore platforms, heat exchangers, chemical tankers, pressure vessels in aggressive chloride/sour environments.

SUS 316 (or 316L): The Versatile Standard

: Great general corrosion resistance (especially to chlorides), excellent formability/weldability, lower cost, widely used in many industries.

: Lower strength and SCC resistance than 2205.

: Marine hardware, food processing, medical devices, architectural trim, tanks.

2205.

Easy Fabrication & Cost-Effective?316.

Chloride-Heavy Marine/Offshore? 2205316 for standard parts.

316L is the established, biocompatible choice.