UNS S31803 and S32205 Duplex Steel Fasteners are engineered to deliver exceptional performance, offering a remarkable blend of corrosion resistance and tensile strength. Crafted from a duplex stainless steel composition comprising both austenitic and ferritic phases, these fasteners boast enhanced strength, durability, and elasticity. Compared to conventional fasteners like carbon steel or standard stainless steel, Duplex Steel UNS S31803 and S32205 Fasteners exhibit superior mechanical properties, ensuring reliable and long-lasting connections in various applications. Moreover, their excellent weldability characteristics make them well-suited for constructing structures requiring extended service life and resilience against harsh environments.
Kc Impex stands out as a reputable manufacturer of ASTM A479 Duplex Steel UNS S31803 Fasteners, renowned for their myriad exceptional attributes. These fasteners are meticulously engineered to offer precise dimensions, remarkable durability, ease of installation, and high strength. Their lightweight nature, coupled with hard-wearing construction, ensures optimal performance in diverse applications. With corrosion-resistant properties, accurate dimensions, and dimensional stability, they excel in torque capacity and boast superior longevity. Furthermore, they feature a superior finish, rust-free surface, and robustness, requiring minimal lubrication due to their rigid construction. ASME SA 479 UNS S32205 Fasteners, on the other hand, are corrosion-resistant super-alloys known for their high-strength characteristics, operational from cryogenic temperatures up to 1300 degrees Fahrenheit. The austenitic formation of ASME SA 479 UNS S31803 Fasteners enhances their durability, even in cryogenic environments, further underlining their exceptional quality and performance.
Standard Duplex 2205 Fasteners specifications as per Fasteners manufacturers.
| Material | DUPLEX 2205 |
| Specification | IS/BS/ASTM |
| Standards | ASTM / ASME - A/ SA 479 / 479 |
| Size | 3 mm to 200 mm |
| Length | M02 to M30 |
Each Duplex 2205 Fasteners have unique design each of them are used in specific applications. Some of them are mentioned below.
Note that this chart includes only some of the most common sizes of Duplex 2205 Bolt. There are many other sizes available as well, and some applications may require custom sizes or special configurations.
Chromium (Cr)
22.0 - 23.0%
Nickel (Ni)
4.50 - 6.50%
Molybdenum (Mo)
3.00 - 3.50%
Manganese (Mn)
2.00% max
Silicon (Si)
1.00% max
Phosphorus (P)
0.03% max
Sulfur (S)
0.02% max
Nitrogen (N)
0.08 - 0.20%
Carbon (C)
0.030% max
Iron (Fe)
Balance
| Density | 7.8 g/cm³ |
| Melting Point | 1350 - 1450°C (2460 - 2640°F) |
| Tensile Strength | 620 - 880 MPa (90 - 128 ksi) |
| Yield Strength (0.2%Offset) | 450 MPa (65.3 ksi) |
| Elongation | 25 - 30% |
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