LDX 2101 Stainless Steel
UNS S32101
Description
LDX 2101 is a lean duplex stainless steel offering excellent strength, chloride stress corrosion cracking (SCC) resistance and economy, which is developed for general-purpose use and designed to be a low nickel general purpose substitute for 304 and 304L. Thereinto, the high strength and resistance to chloride stress-corrosion cracking are benefited from contributions of duplex microstructure of the alloy. In addition, the high chromium and nitrogen content of LDX 2101, combined with an addition of molybdenum, provide very good resistance to localized and uniform corrosion. The enhanced mechanical strength of LDX 2101 enables it to be used in thinner cross-sections which can provide significant cost savings to the end user.
Chemical Component
| Cr | Ni | Mo | Cu | Si | C | Mn | S | N | P | Fe |
|---|---|---|---|---|---|---|---|---|---|---|
| 21.0-22.0% | 1.35-1.7% | 0.1-0.8% | 0.1-0.8% | 1.0% max | 0.04% max | 4.0-6.0% | 0.03% max | 0.2-0.25% | 0.04% max | Balance |
Basic Information
| Items | LDX 2101 Stainless Steel |
|---|---|
| Catalog | ACMA-Fe-A049 |
| Density | 0.278 lb/in3 |
| Melting Range | 2525-2630 °F |
| Poisson's Ratio | 0.3 |
| Electrical Resistivity, Ohm-circ mil/ft | 481 |
| Coefficient of Thermal Expansion, in/in°F x 10-6 | 70-212 °F: 7.5; 70-392 °F: 7.8; 70-572 °F: 8.1 |
| Thermal Conductivity, Btu·ft/ft2·hr·°F | At 70 °F: 9.2; At 212 °F: 9.8; At 392 °F: 11.0; At 572 °F: 11.6 |
| Modulus of Elasticity Dynamic, psi x 106 | At 70 °F: 29.7; At 212 °F: 29; At 392 °F: 27.6; At 572 °F: 26.1 |
Material Forms
Alfa Chemistry offers LDX 2101 stainless steel in a variety of forms, including Pipe, Tube, Sheet, Strip, Plate, Round Bar, Flat Bar, Forging Stock, Hexagon, Wire.
Mechanical Properties
- Minimum specified properties, ASTM A240
| Ultimate Tensile Strength, ksi | 0.2% Yield Strength, ksi | Elongation, % | Hardness MAX, Brinell |
|---|---|---|---|
| 94 | 65 | 30 | 290 |
- Minimum elevated temperature tensile properties, plate
| Temperature, °F | 212 | 302 | 397 | 572 |
| Ultimate Tensile Strength, ksi | 85.6 | 81.2 | 78.3 | 78.3 |
| 0.2% Yield Strength, ksi | 55.1 | 50.8 | 47.9 | 43.5 |
- ASME boiler & pressure vessel code, section VIII, division 1, allowable stress values, ksi
| Temperature, °F | 200 | 300 | 400 | 500 | 600 |
| LDX 2101 | 26.9 | 25.6 | 24.7 | 24.7 | 24.7 |
| 304 | 20.0 | 18.9 | 18.3 | 17.5 | 16.6 |
| 316 | 20.0 | 20.0 | 19.3 | 18.0 | 17.0 |
| 2205 | 25.7 | 24.8 | 23.9 | 23.3 | 23.1 |
Specifications
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
- Storage tanks
- Waste water handling systems
- Ethanol production
* Technical data included herein should be used as a guideline only, and should not be construed as maximum or minimum values for specification or for final design, or for a particular use or application. The data may be revised anytime without notice.
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