LDX 2101®
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.
Chemistry
| Ni | Cr | Mo | Mn | Cu | Si | C | N | S | P | Fe | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| MIN | 1.35 | 21.0 | 0.1 | 4.0 | 0.1 | - | - | 0.2 | - | - | - |
| MAX | 1.7 | 22.0 | 0.8 | 6.0 | 0.8 | 1.0 | 0.04 | 0.25 | 0.03 | 0.04 | Balance |
* ASTM specification 1.50 max Si.
Specifications
ASME SA 240, ASME SA 790, ASME Section VIII Code Case 2418
ASTM A 240, ASTM A 276, ASTM A 276 Condition A, ASTM A 276 Condition S, ASTM A 479, ASTM A 789, ASTM A 790
EN 1.4162
UNS S31009, UNS S32101
Werkstoff 1.4162
Inventory
LDX 2101® Coil, LDX 2101® Fittings, LDX 2101® Pipe, LDX 2101® Plate, LDX 2101® Sheet, LDX 2101® Welding Products
Common Trade Names
LDX 2101® Stainless
Features
- 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
Applications
- Chemical process pressure vessels, piping and heat exchangers
- Pulp and paper mill equipment
- Mixers and agitators
- Architectural
- Waste water handling systems
- Ethanol production
Physical Properties
Density: 0.278 lb/inch3
Melting Point: 2525- 2630°F
Poisson's Ratio: 0.3
Electrical Resistivity: 481 Ohm - circ mil/ft
| Temperature, °F | 70 | 212 | 392 | 572 |
| Coefficient* of Thermal Expansion, in/in°F x 10-6 | - | 7.5 | 7.8 | 8.1 |
| Thermal Conductivity Btu • ft/ft2 • hr • °F |
9.2 | 9.8 | 11.0 | 11.6 |
| Modulus of Elasticity, Dynamic psi x 106 | 29.7 | 29 | 27.6 | 26.1 |
* 70°F to indicated temperature.
Mechanical Properties
Minimum Specified Properties, ASTM A 240
| Ultimate Tensile Strength, ksi | 94 |
| 0.2% Yield Strength, ksi | 65 |
| Elongation, % | 30 |
| Hardness MAX, Brinell | 290 |
Minimum Elevated Tensile Properties
| Temperature, °F | 212 | 302 | 392 | 482 |
| Ultimate Tensile Strength, ksi | 86.2 | 81.3 | 78.3 | 78.3 |
| 0.2% Yield Strength, ksi | 55.7 | 50.8 | 47.6 | 46.1 |
LDX® 2101 is a registered trademark of Outokumpu Stainless