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1.4362 Duplex Steel Plate ASTM A240 S32304 Stainless Steel Plate for High Strength Applications
Product Details
| Model NO. | 1.4362 | Shape | Flat |
|---|---|---|---|
| Technique | Hot Rolled | Surface Treatment | Pickling |
| Specification | 1220*2440, 1500*3000, 1500*6000, 2000*6000mm | Production Capacity | 50000kgs |
| Carbon Content | 0.020% | Chromium Content | 23% |
| Nickel Content | 4% | Molybdenum Content | 0.2% |
| Nitrogen Content | 0.1% | Density | 7,800 Kg/m3 |
| Yield Strength | 400 MPa | Tensile Strength | 600 MPa |
| Elongation | 25% | ||
| Highlight | 1.4362 Duplex Steel Plate,ASTM A240 Stainless Steel Plate,S32304 Alloy 2304 Plate |
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Product Description
1.4362 Duplex Steel Plate ASTM A240 S32304 Stainless Steel Plate
Alloy 2304 (UNS S32304) is a 23% chromium, 4% nickel, molybdenum-free duplex stainless steel. This alloy offers corrosion resistance properties similar to 316L stainless steel, while providing mechanical properties with yield strength approximately twice that of 304L/316L austenitic grades. This enhanced strength allows for weight savings in properly designed pressure vessel applications.
Chemical Composition
Typical Values (Weight %)
| Carbon | Chromium | Nickel | Molybdenum | Nitrogen | Others |
|---|---|---|---|---|---|
| 0.020 | 23 | 4 | 0.2 | 0.1 | S=0.001 |
PREN = [Cr%] + 3.3 [Mo%] + 16 [N%] ≥ 24
Mechanical Properties
Tensile Properties (Minimum Values)
| °C | Rp 0.2 MPa | Rp 1.0 MPa | UTS MPa | °F | YS 0.2% Offset KSI | YS 0.1% Offset KSI | UTS KSI | Elongation % |
|---|---|---|---|---|---|---|---|---|
| 20 | 400 | 440 | 600 | 68 | 58 | 64 | 87 | 25 |
| 100 | 330 | 365 | 570 | 212 | 48 | 53 | 83 | 25 |
| 200 | 280 | 310 | 530 | 392 | 41 | 45 | 77 | 20 |
| 300 | 230 | 260 | 490 | 572 | 33 | 38 | 71 | 20 |
Values obtained for hot rolled plates (th ≤ 2"). Alloy 2304 must not be used for extended periods at temperatures exceeding 300°C (572°F) due to precipitation hardening.
Toughness Values (KCV Minimum Values)
| Temperature | -50°C / -60°F | +20°C / +70°F |
|---|---|---|
| Single | 75 J/cm² / 54 ft. lbs | 90 J/cm² / 65 ft. lbs |
| Average (5) | 90 J/cm² / 65 ft. lbs | 150 J/cm² / 87 ft. lbs |
Hardness (Typical Values)
| HV10 | HB | HRC |
|---|---|---|
| 180-230 | 180-230 | ≤ 20 |
Physical Properties
Density: 7,800 kg/m³ - 0.28 lb/in³
| Temperature Interval °C | Thermal Expansion α×10⁻⁶ K⁻¹ | Resistivity μΩ·cm | Thermal Conductivity W·m⁻¹·K⁻¹ | Specific Heat J·kg⁻¹·K⁻¹ | Young Modulus E GPa | Shear Modulus G GPa |
|---|---|---|---|---|---|---|
| 20-100 | 13 | 80 | 17 | 450 | 200 | 75 |
| 20-100 | 13 | 92 | 18 | 500 | 190 | 73 |
| 20-200 | 13.5 | 100 | 19 | 530 | 180 | 70 |
| 20-300 | 14 | 105 | 20 | 560 | 170 | 67 |
Microstructure
The chemical composition of Alloy 2304 is optimized to achieve a typical 50% austenite / 50% ferrite microstructure following solution annealing treatment at 950°-1050°C (1742°-1922°F). The microstructure of 2304 duplex stainless steel demonstrates superior stability compared to molybdenum-containing duplex grades. Intermetallic phases appear only after extended holding times of 10 hours within the 750°-850°C (1382°-1562°F) temperature range. Copper additions, when specified, increase hardness after heat treatment in the 350°-500°C (662°-932°F) range.
Processing Guidelines
Hot Forming
Hot forming should be performed within the 1150°-900°C (2100°-1650°F) temperature range. Following forming operations, a solution annealing treatment at 950°-1050°C (1742°-1922°F) is recommended to fully restore corrosion resistance and mechanical properties. Components formed from 2304 alloy require careful support during heating to prevent creep deformation.
Cold Forming
Alloy 2304 can be cold formed using standard equipment for 304L and 316L grades. Due to its higher mechanical properties and yield strength, increased forming stresses are required. A final solution annealing heat treatment is recommended after cold forming to restore optimal mechanical and corrosion resistance properties.
Descaling
Use standard solutions and pastes employed for 304L/316L alloys. Pickling times will be longer than for austenitic grades due to the enhanced corrosion resistance properties of this duplex stainless steel.
Machinability
Alloy 2304 duplex stainless steel exhibits improved machinability, particularly in drilling operations. Its performance is equivalent to 316LEZ, while offering superior corrosion resistance and cleanliness without requiring sulfur additions. This results in enhanced localized corrosion resistance behavior.
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