ASME SA 240 S31803 Plate has a hybrid dual microstructure and a yield strength of over 448 MPa, twice that of austenitic stainless steels 316L and 317L. Duplex 1.4462 alloy also contains nitrogen, an austenite stabilizer. SA 240 GR S31803 cold rolled sheet is more resistant to pitting and crevice corrosion than 316 alloy, and Duplex 2205 is also resistant to seawater, making it suitable for use in offshore engineering equipment.
Thermal Conductivity
ASTM A240 UNS S31803 Plate has a lower thermal expansion rate and higher thermal conductivity than austenitic steels.
ASME SA 240 S31803 Plate Sheet Chemical Composition
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | Fe |
| S31803 | 0.030 max | 2.00 max | 1.00 max | 0.030 max | 0.020 max | 22.0 – 23.0 | 3.0 – 3.5 | 4.50 – 6.50 | 0.14 – 0.20 | 63.72 min |
Mechanical Characteristics of SA 240 UNS S31803 Plate
| Grades | Density (g/cm 3) | Density (lb/in 3) | Melting Point (°C) | Melting Point (°F) |
| S31803 | 7.805 | 0.285 | 1420 – 1465 | 2588 – 2669 |
ASME SA 240 S31803 Plate Dimensions
- Thickness 3 mm - 100 mm
- Width 1000 / 1250 / 1500 / 2000 / 2500 mm
- Length 2000 / 2500 / 3000 / 6000 / 6000 Max. 8000 mm
| Thickness (mm) | Dimensions |
|---|---|
| 1.5 | 3m x 1.5m |
| 2.0 | 3m x 1.5m |
| 3.0 | 3m x 1.5m |
| 5.0 | 3m x 1.5m / 4m x 2m |
| 6.0 | 3m x 1.5m / 4m x 2m / 6m x 2m |
| 8.0 | 3m x 1.5m / 4m x 2m / 6m x 2m |
| 10.0 | 3m x 1.5m / 4m x 2m / 6m x 2m |
| 12.0 | 3m x 1.5m / 4m x 2m / 6m x 2m |
| 15.0 | 4m x 2m / 6m x 2m |
| 20.0 | 4m x 2m / 6m x 2m |
