Lean Duplex 2304 (UNS S32304) Seamless Pipes & Tubes Manufacturer & Supplier
Duplex 2304 (UNS S32304) is a lean duplex stainless steel with minimal molybdenum content. It offers approximately double the yield strength of 304L while maintaining similar corrosion resistance. The lean composition makes it a cost-effective alternative to both 316L and standard duplex 2205.
UNS: S32304 | Category: Lean Duplex Stainless Steel | Werkstoff Nr: 1.4362 | EN Name: X2CrNiN23-4
Duplex 2304 — Also Known As
Duplex 2304 is also commonly known as Duplex 2304, 2304 Duplex, Lean Duplex 2304 (UNS S32304) Seamless Pipes & Tubes, S32304, UNS S32304, 1.4362, Werkstoff 1.4362, W.Nr 1.4362, X2CrNiN23-4, lean duplex 2304, ldx 2304.
Duplex 2304 — Applicable Standards & Specifications
Duplex 2304 is commonly supplied to ASTM A789, ASTM A790, ASME SA789, ASME SA790, EN 10216-5, EN 10217-7.
Size Range
Outer Diameter: 1/4" NPS to 10" NPS (6.35mm to 273.1mm OD)
Wall Thickness: SCH 5S to SCH 80S
Chemical Composition (%)
| C | Mn | Si | Cr | Ni | Mo | N | Cu | P | S |
|---|---|---|---|---|---|---|---|---|---|
| 0.030 max | 2.50 max | 1.00 max | 21.5-24.5 | 3.0-5.5 | 0.05-0.60 | 0.05-0.20 | 0.05-0.60 | 0.040 max | 0.030 max |
Mechanical Properties
- Tensile Strength
- 600 MPa min
- Yield Strength
- 400 MPa min
- Elongation
- 25% min
- Hardness
- 290 HBW max
Physical Properties
- Density
- 7.75 g/cm3
- Melting Range
- 1400-1450 C
- Thermal Conductivity
- 17 W/m-K
- Electrical Resistivity
- 800 nOhm-m
- Specific Heat
- 480 J/kg-K
- Coeff. of Thermal Expansion
- 13.0 um/m-C
Corrosion Resistance
- Pitting Resistance (PREN)
- ~25
- Max Service Temp (Oxidizing)
- 315 C
- Intergranular Corrosion
- Resistant
- Stress Corrosion Cracking
- Good resistance vs austenitic
- General Corrosion Rate
- Similar to 316L
- Seawater Resistance
- Moderate
Applicable Standards
- ASTM A789 / ASME SA789
- ASTM A790 / ASME SA790
- DIN EN 10216-5
Applications
- Storage tanks and pressure vessels
- Water heaters and heat exchangers
- Building and construction structural members
- Bridge structures
- Transport tankers
- Biofuel production equipment
Industries Served
- Construction
- Water Treatment
- Transport
- Food & Beverage
- Architecture
Key Advantages
- Double the yield strength of 304L
- Cost-effective: less nickel and minimal molybdenum
- Good weldability without expensive consumables
- Excellent resistance to SCC vs austenitic grades
- Lighter weight designs due to higher strength
- Good impact toughness at low temperatures
Equivalent Grades
- ASTM
- S32304
- Trade
- SAF 2304
- EN
- 1.4362