Duplex Steel - UNS S31803 Fasteners

AISI 4130 Bolts

BoltPort is a manufacturer and supplier of duplex 2205 grade equivalent uns s31803 fasteners such as bolts, screws, stud bolts, threaded rods, nuts, washers, dowel pins, and other custom bolting components. We offer both metric and imperial sized fasteners in duplex alloy S31803. Duplex stainless steel 2205 fasteners are produced from premium quality rolled bar stock or forged bars with latest material specifications. Boltport can manufacture alloy S31803 fasteners in ASME, DIN, ISO & other international dimension standards. These duplex fasteners are also available in equivalent grades F51, UNS S31803, DIN EN 1.4462 and Uranus 45n.

Hex bolts, heavy hex bolts, stud bolts, tap end studs, double end studs, threaded rods, hex nuts, heavy hex nuts, nylock nuts, hex jam nuts, castle nuts, plain washers, spring lock washers and tab washers, dowel pins are most common of duplex alloy S31803 fastening parts.

About Duplex S31803

UNS S31803 is uns designation and comparable steel grade, equivalent of duplex steel alloy 2205 with minor correction in chemical composition. Duplex S31803 has less tolerant chemistry as compared to duplex steel 2205 with slightly lower mechanical properties. However its resistance to stress corrosion chloride cracking, pitting and crevice corrosion remains constant.

Duplex S31803 Fasteners

  • Duplex 2304 Bolts
    Bolts
  • Duplex 2304 Screws
    Screws
  • Duplex 2304 Stud Bolts
    Stud Bolts
  • Duplex 2304 Threaded Rods
    Threaded Rods
  • Duplex 2304 Nuts
    Nuts
  • Duplex 2304 Washers
    Washers
  • Duplex 2304 Accessories
    Accessories
  • Duplex 2304 Components
    Components

Duplex S31803 Properties

Duplex S31803 Chemical Composition

Carbon Chromium Manganese Molybdenum Nickel Phosphorus Sulphur Silicon Nitrogen Iron
0.03 % Max 21.0 - 23.00 % 2.00 % max 2.50 - 3.50 % 4.50 - 6.50 % 0.03 % max 0.02 % max 1.00 % max 0.08 - 0.20 % Balance

Duplex S31803 Mechanical Properties

Tensile Strength Yield Strength Elongation at break Hardness, Brinell
620 MPa 450 MPa 25% min 290 max

Specifications for Duplex S31803 Fasteners

Specification Grade Products
ASTM A182 Grade F51/UNS S31803 Bolts, Screws, Stud Bolts, Nuts, Forged Components
ASTM A240 Grade 2205/UNS S31803 Washers & Sheet Metal Components
ASTM A276 Grade 2205/UNS S31803 Bolts, Screws, Stud Bolts, Threaded Rods, Nuts & Bar Components
ASTM A479 Grade 2205/UNS S31803 Bolts, Screws, Stud Bolts, Threaded Rods, Nuts & Bar Components
ASTM A1049 Grade F51/UNS S31803 Bolts, Screws, Stud Bolts, Nuts, Forged Components
ASTM A1082 Grade 2205/UNS S31803 Bolts, Screws, Nuts

Duplex S31803 Fasteners Coatings

PTFE (Teflon) PTFE (Xylan) Nickel

Applications for UNS S31803 Fasteners

Automotives Railways Structurals
Shipbuilding & Repairs Marine & Offshore Power Industry
Chemical Processing