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Adarsh Nickel Alloys is a trusted manufacturer and supplier of Duplex Steel S31803 Nuts in Delhi, delivering high-strength fastening solutions for demanding industrial applications. These nuts are manufactured using premium-grade raw materials and advanced machining processes to ensure precise threading, excellent load-bearing capacity, and long service life. Duplex Steel S31803 Nuts are known for their outstanding resistance to corrosion and mechanical stress, making them suitable for harsh environments. Adarsh Nickel Alloys offers these nuts in various sizes and standards, meeting international quality and performance requirements.
Duplex Steel S31803 Nuts contain chromium, nickel, molybdenum, and nitrogen, forming a balanced austenitic-ferritic microstructure. This composition provides superior resistance to pitting, crevice corrosion, and stress corrosion cracking. Mechanically, these nuts exhibit high tensile strength, excellent yield strength, and good impact toughness. Duplex Steel S31803 offers nearly double the strength of standard austenitic stainless steels, along with good fatigue resistance, dimensional stability, and reliable performance under high pressure and varying temperatures.
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Material
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Specification
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Standards |
Size
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Length
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Duplex Steel S31803 |
IS BS ASTM |
ASTM / ASME – A/ SA 479 / 479
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3 mm |
M02 to M30 |
| Cr | N | Ni | C | Mn | Si | P | S | Mo | |
|---|---|---|---|---|---|---|---|---|---|
| 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 |
| S32205 | min: 22.0 max: 23.0 | min: 0.14 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: 3.0 max: 3.5 |
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 | |
UNS-S 32205 | 621 | 25 | 448 | 21 max |
At Adarsh Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Duplex Steel S31803 Nuts in Delhi, India, providing cutting-edge solutions for all your piping needs. Our state-of-the-art production plants are strategically located in the India, allowing us to maintain a vast inventory of over 16,000 tons of premium-quality materials readily available in stock. We are dedicated to delivering superior products and services, ensuring reliability and excellence for our global clientele.
Contact us to get a quick quote for your requirement.
Duplex Steel S31803 Nuts supplied by Adarsh Nickel Alloys are widely used in oil and gas installations, petrochemical plants, chemical processing units, and offshore structures. They are ideal for fastening applications in pipelines, pressure vessels, heat exchangers, and structural assemblies exposed to corrosive environments. These nuts are also commonly used in marine engineering, desalination plants, power generation, and water treatment facilities. Their high strength, corrosion resistance, and long-term reliability make them suitable for critical bolting applications requiring safety and durability.