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  • 29, Radha Krishna Temple Bldg., 1st Floor, Office No. 10, 4th Kumbharwada Lane, Mumbai - 400 004.
  • +91 22 6651 8616 / 6659 5953
  • sales@naturalsteels.com
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Natural Steels is the recognized as manufacturer, exporter, and supplier of Duplex UNS S31803 Fasteners. Being a reliable firm we aim to satisfy the needs and requirements of the patrons. However, we offer our best quality standard product at a cost-effective price. The manufacturing of these fasteners begins with the use of high quality of raw material purchased from the reputed merchants of the industry. Moreover, we use the art of machinery and the latest technology to obtain the standard product.

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Duplex Steel S31803 / S32205 Fasteners Manufacturers In India, Duplex Steel S31803 / S32205 Fasteners Suppliers In India, Duplex Steel S31803 / S32205 Fasteners Stockists In India, Duplex Steel S31803 / S32205 Fasteners Exporters In India

We supply the product in a comprehensive range, shapes, size, and dimensions in compliance with the needs and constraints mention by the customers. Our product founds its utility in various industrial applications. These are highly admired by our esteem patrons due to its attributes and feature it having.

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Fasteners made of duplex stainless steel S31803 have molybdenum, nickel, and chromium content in a small percentage. Duplex means dual microstructure present in this alloy. They are two-phase austenitic, ferritic steel fasteners. Duplex Steel S31803 Fasteners have a high yield strength and good fatigue resistance. In harsh environments, the fasteners show good resistance to pitting, stress corrosion cracking, and crevice corrosion. They also survive stress corrosion situations caused by chloride and sulfur dioxide quite well.

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Duplex Steel S31803 / S32205 Fastener Specification

Specifications ASTM A479 / ASME SA479
Dimensions DIN 931, 933, 934, 7991, 976, 125, ASME B18.2.1, B18.3
Size Bolt / Screw Size : M3 – M56 | 3/6″ to 2″ | Custom Sizes Nuts Size : M3 – M56 | 3/6″ to 2″ | Custom Sizes Washers Size : M3 – M56 | 3/6″ to 2″ | Custom Sizes Machine Screws Size : M1.6 – M12 Self Tapping Screw Size : No.2 – No. 14
Length 3 mm to 200 mm
Threads UNF, BSW, BSF, METRIC, UNC, or as required
Surface Coating Ptfe Coating Phosphate Coating Teflon Coating Zinc Coating Hot Dipped Galvanizing Coating Cadmium Coating Xylon Coating

Duplex Steel S31803 / S32205 Fastener Equivalent Grades

STANDARD UNS WNR.
Duplex Steel 2205 S31803 / S32205 1.4462

Duplex Steel S31803 / S32205 Fasteners Chemical Composition

S31803 / S32205 C N P Si Mn Mo Fe Cr S Ni
1.0 0.03 0.02 2.0 3.0 – 3.5 22.0 – 23.0 0.03 4.5 – 6.5 0.14 – 0.2 Bal

Mechanical Properties Of Duplex Steel S31803 / S32205 Fasteners

S31803 / S32205 Density Melting Point Yield Strength (0.2%Offset) Tensile Strength Elongation
7.8 g/cm3 1350 °C (2460 °F) Psi – 80000 , MPa – 550 Psi – 116000 , MPa – 800 15 %

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