Primary test-
• Material test
• Positive material test
• Intergranular corrosion test
• Pitting corrosion test
• Radiography
• Ultrasonic test
• Chemical test
• Micro test
• Macro test
Secondary test-
• Mechanical test
• Strength test
• Buckling test
• Compression test
• Crushing test
• Thermal property analysis
• Hardness test
Test reports and documents:
• national board approval lab (NBAL) test report
• material test report
• Welding guide
• NABL test certificates
• fumigation certificates
• mill test report
• quality assurance plan
• heat treatment charts
• stamping details
To offer complete damage-free shipping we use industrial standard techniques. Duplex Steel UNS S31803 Square Bars are delivered in the form of bundles and rolled out in the thin film of plastic to prevent rusting and oxidation.
ASME SA276 UNS S31803 Round Bar Equivalent Grades
STANDARD | WERKSTOFF NR. | UNS |
Duplex S31803 | 1.4462 | S31803 |
Stock Size Range and Specifications For Duplex Steel UNS S31803 Round Bar
Specification :Â ASTM A276, A479 / ASME SA276, A479
Dimensions :Â ASTM, ASME and API
Size :Â 10 mm To 100 mm Dia in 100 mm TO 6000 mm Length
Form :Â Round, Square, Hex (A/F), Rectangle, Wire (Coil Form), Wire-mesh, Billet, Ingot, Forging Etc
Finish :Â Bright, Polish & Black
Chemical Composition of Duplex Steel UNS S31803 Bars
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 Properties of Duplex / UNS S31803 / 1.4462 Round Bar
Grades | Density (g/cm 3) | Density (lb/in 3) | Melting Point (°C) | Melting Point (°F) |
S31803 | 7.805 | 0.285 | 1420 – 1465 | 2588 – 2669 |
Markings On The Duplex Steel UNS S31803 Round Bar
The full identification of the bars should be continuously marked down its whole length, including :
- Â Â Rating Designation
- Â Â Material Designation
- Â Â “WP” in grade symbol
- Â Â Grade
- Â Â Schedule number or nominal wall thickness
- Â Â Heat Code
-   Manufacturer’s Name or Symbol
Duplex Steel UNS S31803 Bars Application Industries
- Â Â Petrochemical Industry
- Â Â Chemical Industry
- Â Â Oil and Gas Industry
- Â Â Pulp & Paper Industry
- Â Â Power Plant Industry
- Â Â Food Processing Industry
- Â Â Pharmaceuticals Industry
- Â Â Energy Industry
- Â Â Aerospace Industry