Duplex Steel UNS S31803 Bolt are made of high quality austenitic ferritic SS duplex alloy which make the fastener to be used in wide applications. Since the alloy is composed of elements like chromium-nickel and molybdenum which offers excellent resistance to corrosion, resistance to stress corrosion cracking, pitting resistance, good toughness, high ductility and better performance.
leaders that exports and manufactures high quality of Duplex UNS S31803 Square Nut to their buyers all over the world. The industry examines and evaluates these fasteners on various parameters such as performance, reliability, its durability, quality issue and problem while exporting. The industry also uses modern machinery tools and other inventory technologies in their production to provide their customers with top-notch quality of UNS grade fasteners. Moreover, the industry provides customization specification services varying in sizes and shapes as per the necessity of the regarded customers across the globe.
Duplex UNS S31803 Bolt/Nut Manufacturers, Duplex UNS S31803 Bolt/Nut Suppliers, Duplex UNS S31803 Bolt/Nut Stockists, Duplex UNS S31803 Bolt/Nut Exporters
Duplex UNS S31803 Bolt/Nut Manufacturers in India, Duplex UNS S31803 Bolt/Nut Suppliers in India, Duplex UNS S31803 Bolt/Nut Stockists in India, Duplex UNS S31803 Bolt/Nut Exporters in India
Packaging of the material: the industry packages these customized fasteners as per the industry norms. They use wooden crates, boxes or pallets to pack and export the fasteners all over the world or as per the customer standard. Industry professional brief with the clients and compete all the documents formality when the ASTM A479 UNS S31803 Duplex Hex Head Bolt product are shipped out of India. Also, the industry provides with relevant shipping documents along with the product.
Duplex UNS S31803 Bolt/Nut Manufacturers in Mumbai, Duplex UNS S31803 Bolt/Nut Suppliers in Mumbai, Duplex UNS S31803 Bolt/Nut Stockists in Mumbai, Duplex UNS S31803 Bolt/Nut Exporters in Mumbai
Material testing’s: the industry performs several material tests in order to ensure the quality and efficiency of the fasteners. PMI, IGC, pitting resistance test, chemical analysis, mechanical test, hardness test etc are some of the tests industry carries out.
What material is UNS S31803?
UNS S31803 is a ferritic-austenitic duplex steel having a ferritic-austenitic microstructure. In the annealed condition, the alloy contains around 40-50 percent ferrite. The duplex microstructure combines the strong strength of ferritic grades with the corrosion resistance of austenitic grades.
What is duplex Bolts?
Duplex Steel UNS S31803 Bolts are distinguished by their exceptional yield strength, which is twice as high as ordinary austenitic stainless steel’s annealed yield strength.
Duplex UNS S31803 Bolt/Nut Specifications
| Specifications | ASTM A 479 ASME SA 479 |
|---|---|
| Standard | DIN, ASTM, BS and all International Standards |
| Length | 3 mm to 200 mm |
| Size | M3 – M56 | 3/6″ to 2″ | Custom Sizes |
| Type | Hex Head Bolts, Square Bolts, U bolts, Eye bolts, T bolt, Hex Bolt, Lag Bolts, Counter sunk Bolts, Hex Head nuts, Square nuts, Lock nuts, Eye nuts, wing nuts, T nuts, Panel Nuts, Coupling Nuts, Dome nuts, Acorn Nuts. |
Chemical Composition Of Duplex Steel UNS S31803 Nut
| Cr | N | Ni | C | Mn | Si | P | S | Mo | |
|---|---|---|---|---|---|---|---|---|---|
| UNS S31803 | min: 21.0 max: 23.0 |
min: 0.08 max: 0.20 |
min: 4.5 max: 6.5 |
0.03 max |
2.0 max |
1.0 max |
0.03 max |
0.02 max |
min: 2.5 max: 3.5 |
Duplex UNS S31803 Fasteners Mechanical Propertiess
| Grade | Tensile Strength (MPa) min | Elongation (% in 50mm) | Yield Strength 0.2% Proof (MPa) min | Hardness Rockwell C (HR C) |
|---|---|---|---|---|
| UNS-S 31803 | 650-880 | 25 | 448 |
Equivalent Grade Of UNS S31803 Hex Bolts
| Duplex | Common Name | Related Specifications | ||
|---|---|---|---|---|
| European | UNS | ASTM/ASME | ||
| Duplex 2205 | SAF 2205 ® | 1.4462 | S31803 | F51 |
Physical Properties Of Duplex Steel UNS S31803 Fasteners
| Density lbm/in3 | Electrical Resistivity mW•in | Electrical Resistivity (in x 10-6) | Heat Capacity BTU/lbm•°F | Thermal Conductivity (BTU/hr•ft•°F) | |
|---|---|---|---|---|---|
| at 68°F | 0.278 | 0.112 | 8.7 | 27.6 | 33.5 |
| at 212°F | 0.119 | 9.2 | 26.1 | 35.4 | |
| at 392°F | 0.127 | 9.8 | 25.4 | 37.4 | |
| at 572°F | 0.134 | 10.4 | 24.9 | 39.4 |
Our Export
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