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LDX 2101 Duplex Stainless Plate - Dnya Stainless Steel

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LDX 2101 Duplex Stainless Steel (UNS S32101, 1.4162)

LDX 2101 duplex stainless steel is a lean duplex stainless steel designed to offer a cost-effective balance of strength, corrosion resistance, and weldability. This alloy, classified under UNS S32101 and EN 1.4162, is part of the duplex stainless steel family, which combines ferritic and austenitic microstructures. Its chemical composition includes a low nickel content (1.35–1.70%) and increased manganese (4.00–6.00%), along with 21.0–22.0% chromium, 0.10–0.80% molybdenum, and nitrogen (0.20–0.25%). This carefully balanced chemistry contributes to its excellent mechanical properties and corrosion resistance while minimizing material costs.

 

Key Properties

  • Corrosion Resistance: Excellent resistance to stress corrosion cracking, pitting, and crevice corrosion, especially in environments with moderate chlorides.
  • High Strength: Around twice the yield strength of austenitic grades like 304 and 316, allowing for reduced material thickness and weight savings.
  • Durability: Good fatigue resistance and toughness, even at low temperatures, making it suitable for dynamic and structural applications.
  • Economical: Reduced nickel and molybdenum content lowers material costs compared to higher alloyed duplex grades.
  • Sustainability: Lower alloying elements contribute to a reduced environmental footprint.

 

Technical Specifications

  • UNS: S32101
  • DIN: 1.4162

Available Thickness

3/16″1/4″5/16″3/8″1/2″5/8″3/4″
4.8mm6.3mm7.9mm9.5mm12.7mm15.9mm19mm
7/8″1″1 1/4″1 1/2″1 3/4″2″
22.2mm25.4mm31.8mm38.1mm44.5mm50.8mm
ldx-2101-duplex-stainless-steel-sheet-plate

Application

  • Automotive
  • Chemical and Pharmaceutical
  • Fertilizer
  • Food Processing and Handling
  • Manufacturing
  • Mining
  • Oil & Gas
  • Phosphate Mining

Standard

  • ASTM A240 / A240M
  • ASTM A276 / A276M
  • ASTM A312 / A312M
  • ISO 15510
  • EN 10088-2
  • IN 10204
  • HE G4304
  • HE G4305
  • ASME SA240 / SA240M

Worldwide Equivalent Grade for LDX 2101

Country Standard Grade
United States UNS S32101
European Union EN 1.4162
United States ASTM S32101
United States ASME SA-240/SA-240M
Japan JIS SUS821L1
China GB 021Cr21Ni5Mn3N
France AFNOR Z1CN21-04Az
Germany DIN 1.4162
International ISO 1.4162

Corrosion Resistance

  • General Resistance: LDX 2101 provides good resistance to general corrosion, making it suitable for various industrial applications. It resists corrosion in environments like mildly acidic and alkaline solutions.
  • Chloride Environments: It offers better resistance to pitting and crevice corrosion compared to standard austenitic steels like 304 or 316, but it may not perform as well as higher-grade duplex or super duplex steels (such as 2205 or 2507) in highly chloride-rich environments.
  • Stress Corrosion Cracking (SCC): LDX 2101 has good resistance to stress corrosion cracking, which is a significant advantage in environments where SCC might be a concern.
  • Oxidizing Conditions: It performs adequately in mildly oxidizing environments but may not be suitable for highly oxidizing acids.

Chemical Composition Duplex Stainless LDX 2101

ElementRange (%)
Chromium (Cr)20.0 – 22.0
Nickel (Ni)1.0 – 2.0
Molybdenum (Mo)0.0 – 0.2
Manganese (Mn)4.5 – 6.5
Nitrogen (N)0.14 – 0.20
Carbon (C)≤ 0.03
Silicon (Si)≤ 0.8
Phosphorus (P)≤ 0.03
Sulfur (S)≤ 0.01

Physical Properties Duplex Stainless LDX 2101

PropertyValue
Density7.8 g/cm³
Melting Point~1420 – 1450°C
Modulus of Elasticity~200 GPa
Thermal Conductivity~15 W/m·K
Thermal Expansion~16.0 x 10⁻⁶ /°C
Electrical Resistivity~0.6 x 10⁻⁶ Ω·m
Hardness (Brinell)~250 HB
Yield Strength~450 MPa
Tensile Strength~600 MPa
Elongation~25%
Charpy Impact Toughness~50 J (at -50°C)

Mechanical Properties of Duplex Stainless LDX 2101

PropertyValue
Yield Strength (0.2% Offset)~450 MPa
Tensile Strength~600 MPa
Elongation~25%
Reduction of Area~50%
Hardness (Brinell)~250 HB
Impact Toughness (Charpy V-notch)~50 J (at -50°C)
Modulus of Elasticity~200 GPa
Fatigue StrengthTypically good under cyclic loading conditions

Fabrication Data

  • Welding: LDX 2101 can be welded using common techniques such as TIG, MIG, and SMAW. It’s important to use low-heat input welding procedures to avoid overheating and subsequent loss of toughness.
  • Machining: It has good machinability, but tools should be kept sharp and cutting speeds may need to be adjusted to prevent work hardening.
  • Forming: The material can be cold-formed; however, the process should be done carefully to avoid work hardening. Hot forming is also feasible but should be followed by appropriate heat treatment.
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