Special Products

Specially Designed Products
Home / Special Products / Lean Duplex 2101

Lean Duplex 2101

Lean Duplex 2101 is a lean duplex stainless steel designed for general purpose use. Like other duplex stainless steels, Lean Duplex 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, Lean Duplex 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 Lean Duplex 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. Lean Duplex 2101 is magnetic, similar to all duplex stainless steels, as it contains an even balance of ferrite and austenite. 316L stainless is a fully austenitic stainless steel and is therefore non-magnetic.


  • 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


  • 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