S31803 Duplex Stainless Steel Fasteners are characterized by the dual-phase structure of austenitic-ferritic with well-measured inclusions of molybdenum, nickel, and chromium in well-measured ratios. Duplex alloys offer excellent resistance to fatigue and have very high yield strength because of the advantageous characteristics achieved by fusing together the properties of ferritic and austenitic stainless steels. In addition, these fasteners afford the best resistance to crevice corrosion, stress corrosion cracking, and even pitting corrosion under severe conditions, including those of a chloride and sulfide stress corrosion environment.
Our Duplex S31803 Fasteners are well-machined through the use of good tooling features, which may include either high-speed or carbide tooling. They are hot-worked when exposed to a temperature ranging between 954 and 1149 degrees Celsius, and cold work offered conventionally in suitable conditions to the prescribed specification. At Sankalp Alloys Overseas, we work hard to provide the clients with the best possible quality of Duplex Steel S31803 Fasteners, which have the ability to demonstrate robust performances. In doing so, we are reckoned Manufacturer, Supplier, Stockist, and Exporter that make sure the quality and precision of the fasteners be inviolate regarding all potential industrial applications.
S31803 Duplex Steel ASTM A182 Fasteners Equivalent Grades
STANDARD | UNS | WNR. |
---|---|---|
Duplex Steel 2205 | S31803 / S32205 | 1.4462 |
Chemical Alloyion of Duplex Steel S31803 Industrial Fasteners
Grade | Common Name | C% | Mn% | Si% | P% | S% | Cr% | Ni% | Mo% | N% |
---|---|---|---|---|---|---|---|---|---|---|
2205 | S31803 | 0.030 | 2.00 | 1.00 | 0.030 | 0.020 | 21.0-23.0 | 4.5-6.5 | 2.5-3.5 | 0.08-0.20 |
S32205 | 0.030 | 2.00 | 1.00 | 0.030 | 0.020 | 22.0-23.0 | 4.5-6.5 | 3.0-3.5 | 0.14-0.20 |
Mechanical Properties Of S31803 Duplex Steel Bolts & Nuts
Tensile Strength, ksi | 90 min |
---|---|
0.2% Yield Strength, ksi | 65 min |
Elongation, % | 25 min |
Hardness [HRC] | 293 max |
Physical Properties of UNS S31803 & S32205 Duplex Stainless Steel Fasteners
Density lbm/in3 | Electrical Resistivity mW•in | Thermal Conductivity (BTU/hr•ft•°F) | Heat Capacity BTU/lbm•°F | Electrical Resistivity (in x 10-6) | |
---|---|---|---|---|---|
at 68°F | 0.278 | 27.6 | 8.7 | 0.112 | 33.5 |
at 212°F | 26.1 | 9.2 | 0.119 | 35.4 | |
at 392°F | 25.4 | 9.8 | 0.127 | 37.4 | |
at 572°F | 24.9 | 10.4 | 0.134 | 39.4 |
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