The problem: years of maintenance
When it was time to begin replacing cracked and corroded storage tanks that had been repainted numerous times, a major U.S. chemical manufacturer faced a material choice: the same austenitic grade or a duplex stainless steel.
The contents of the 50-feet-high and 60-feet-diameter tanks were only mildly corrosive. But the outside environment was high in chlorides, which made the tanks susceptible to cracking and corrosion.
The solution: LDX 2101®
The chemical manufacturer made its industry-first purchase of lean duplex LDX 2101® stainless plate from Outokumpu for construction of new storage tanks. The proprietary duplex grade was selected for its good stress-corrosion cracking resistance and mechanical properties - as well as weight and cost savings.
In addition to lower maintenance costs, LDX 2101 has a 90 percent higher mechanical strength than stainless steel grade ASTM 304. This higher strength offers weight savings, because considerably thinner plates can be used in production. LDX 2101 is also extremely machinable and has the advantage of being available in 120” (3 meter) wide plate.
What is LDX 2101?
LDX 2101 is a low-alloyed, general-purpose lean duplex stainless steel—a stronger replacement for ASTM 304 stainless steel. LDX 2101 combines properties of corrosion resistance, strength, machinability, durability, and long-term cost efficiency. With its low nickel content, LDX 2101 has better price stability than high-nickel stainless steels.
In addition to hot and cold rolled plate, and coil, Outokumpu produces LDX 2101 in bar from 3/4” up to 6” in diameter.
Superior performance with LDX 2101
In addition to chemical tanks in the U.S., LDX 2101 has been specified for industrial tanks holding everything from white wine to sewage water, and from marble slurry in Norway to palm oil and honey in Barcelona.