LDX 2101® is a lean duplex stainless steel designed for general purpose use. Like other duplex stainless steels, LDX 2101® provides both superior strength and chloride stress corrosion cracking resistance compared to 300 series stainless steels. The use of manganese ensures proper ferrite-austenite phase balance, while allowing a reduction in nickel content. As a result, LDX 2101® is priced competitively with 304/304L and 316/316L stainless steels.
The combination of a duplex structure and high nitrogen content provide significantly higher strength levels than 316/316L stainless steel. Often a lighter gauge of LDX 2101® can be utilized, while maintaining the same strength as a 300 series fabrication. The resultant weight savings can dramatically reduce the material and fabrication costs of a component.
Availability – Duplex LDX 2101®
Plate
Weld Wire
Specifications – Duplex LDX 2101®
| ASTM | A 240 |
| ASME | SA-240 |
Chemical Composition – Duplex LDX 2101®
| C | Cu | Cr | Mn | Mo | N | Ni | P | S | Si |
|---|---|---|---|---|---|---|---|---|---|
| Max | Max | Max | Max | ||||||
| 0.04% | 0.1%-0.8% | 21% – 22% | 4.0%-6.0% | 0.1% – 0.8% | 0.2%-0.25% | 1.35% – 1.7% | 0.04% | 0.03% | 1.0% |
Design Features – Duplex LDX 2101®
- High resistance to chloride stress corrosion cracking (SCC).
- High strength.
- Good fatigue strength.
- Chloride pitting resistance comparable to type 316L stainless.
- Good general corrosion resistance.
- Good machinability and weldability.
- Useful up to 600°F.
Typical Applications – Duplex LDX 2101®
- Chemical process pressure vessels, piping and heat exchangers.
- Pulp and paper mill equipment.
- Mixers and agitators.
- Storage tanks.
- Waste water handling systems.
- Ethanol production.
Tensile Requirements – Duplex LDX 2101®
Tensile Strength (KSI): 94
Yield Strength (KSI): 65
KSI can be converted to MPA (Megapascals) by multiplying by 6.895.