Manufactures & Suppliers of Pipes, Tubes, Flanges, Pipe Fitting & Fasteners

Natron Pipes and Tubes is a reputable and trusted manufacturer and supplier of duplex steel fasteners in India. The company places a strong emphasis on quality, consistently striving to meet and exceed the expectations of its clients. Duplex steel fasteners are recognized for their impressive yield strength.

Duplex Steel Flat Washers, Duplex Steel Bolt Fasteners, Duplex Steel Hex Bolts, Duplex Steel Heavy Hex Nuts, Duplex Steel Fasteners Supplier and Manufacturer in Mumbai, India

Natron Steel and Tubes is engaged in manufacturing, supplying, and exporting a qualitative range of Duplex Steel Fasteners crafted from high-quality raw materials. We offer a comprehensive selection of Duplex Steel 2205 Fasteners, including bolts, nuts, washers, screws, threaded rods, and duplex steel screws. These Duplex Steel Fasteners are available in various sizes, shapes, specifications, and thicknesses to meet the specific requirements of our clients.


Duplex Steel Fasteners Specification

Specifications : ASTM A479 / SA479
Standard : DIN, ASTM, BS and all International Standards
Length : 3 mm to 200 mm
Nuts Size : M3 - M56 | 3/6" to 2" | Custom Sizes
Bolt / Screw Size : M3 - M56 | 3/6" to 2" | Custom Sizes
Machine Screws Size : M1.6 - M12
Washers Size : M3 - M56 | 3/6" to 2" | Custom Sizes
Grades : Grade 2, Grade 5 etc.
Type : Nuts, Bolts, Screws, Sockets, Studs, Screw, Hex Set Screw, Socket Screw, Cap Screw, Pan Head Screw, Machine Screw, Socket Head Cap Screw, Allen Cap screw, Wing Screw, Washers, Spring Washers, Studs, Anchors, Marine Anchors, Nut, Hexagon Nut, Hex Nut, Hex Coupling Nut, Hex Domed Cap Nuts, Square Nut, Stud Bolts, Hex Head Bolts, Socket Hexagon Head Screw Anchor Bolt, U- Bolts, J Bolts, Mushroom Head Square Neck Bolts, T-Head Bolts, Wing Screw, Eye Bolt, Foundation Bolts, Structural Bolts.

The unique microstructure of duplex steel fasteners, consisting of both ferritic and austenitic duplex steels, contributes to their outstanding mechanical properties. This dual-phase structure allows duplex steel fasteners to achieve higher strength from the austenitic component while benefiting from the exceptional toughness provided by the ferritic component.

Duplex Steel Fasteners Chemical Composition Chart

Grade C Mn Si P S Cr Mo Ni N Fe
S32205 0.030 max 2.00 max 1.00 max 0.030 max 0.020 max 21.0 – 23.0 2.50 - 3.50 4.50 – 6.50 0.8 – 0.20 63.54 min
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

SS Fasteners Mechanical Properties

Duplex Density Melting Point Yield Strength Tensile Strength Elongation
7.8 g/cm3 1350 °C Psi – 80000, MPa – 550 Psi – 116000, MPa – 800 15

Duplex Steel Fasteners Size Chart Table

SIZE GRADE ASME ISO ASTM
M1.6 to M64 12.9 B18.3.1 M 4762 A574M
M3 to M20 012.9 B18.3.5M 10642 F835M
M3 to M12 012.9 B18.3.4M 7380 F835M
M4 to M20 10.9
M6 to M24 012.9 B18.3.3M
M3 to M10 012.9 F835M
M3 to M20 45H B18.3.6M 4028 F912M
M3 to M12 45H B18.3.6M 4027 F912M
M3 to M20 45H B18.3.6M 4029 F912M
M6 to M12 45H B18.3.6M 4026 F912M
M3 to M20 45H B18.3.6M 4029 F912M
M8 to M22