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Hazlewood Fasteners, a reputable manufacturer and supplier located in Canberra, Australia, specializes in top-notch Duplex Steel S31803 Washers designed for exceptional strength, outstanding corrosion resistance, and long-lasting durability. Crafted from duplex stainless steel that merges the advantages of both austenitic and ferritic structures, these washers deliver remarkable toughness and stability, even in the toughest conditions. Built to comply with international quality standards, they guarantee dependable load distribution and protection for fasteners in demanding environments. Hazlewood Fasteners’ Duplex Steel S31803 Washers are perfect for industries like oil & gas, petrochemical, marine, and power generation, where performance and reliability are essential.
Duplex Steel S31803 Washers consist of about 22% chromium, 5–6% nickel, 3% molybdenum, along with trace amounts of nitrogen, manganese, and silicon, with the rest being iron. Their dual-phase microstructure provides a tensile strength ranging from 620–880 MPa and a yield strength of 450–550 MPa, along with excellent fatigue resistance and dimensional stability. These washers excel in resisting pitting, crevice corrosion, and stress-corrosion cracking, particularly in chloride-rich environments. The blend of chromium and molybdenum boosts oxidation and corrosion resistance, ensuring top performance in high-pressure and high-temperature situations.
| Grade | Duplex Steel UNS S31803 / S32205 |
| Specifications | ASTM A 479 ASME SA 479 |
| Dimension | DIN, ASTM, BS and all International Standards |
| Length | 3mm to 200mm |
| Size | M3 – M56 | 3/6″ to 2″ | Custom Sizes |
| Types | Star Washer, Flat Washer, Lock Washer, Slot Washer, Machine Washer, Sealing Washer, Split Washer, Dome Tooth Washer, Countersunk Washer, Tab Washers, Spherical Washer, Square Washer, Spring Washer, Round Washers, Square Washers etc |
| 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 |
| 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 % |
To satisfy our clients needs by providing high quality products at competitive price as per the schedule and to maintain long term relationship with our clients.
Duplex Steel S31803 Washers are widely utilized in various industries, including offshore platforms, oil and gas refineries, desalination plants, heat exchangers, and chemical processing equipment. They excel at distributing loads and resisting corrosion in harsh environments, such as those exposed to seawater, chemicals, and acidic solutions. In sectors like marine, water treatment, pulp and paper, and power generation, these washers provide reliable fastening even under conditions of vibration, high pressure, and fluctuating temperatures. Their impressive mechanical strength and durability make them perfect for use in pumps, valves, flanges, and structural assemblies. When it comes to critical applications that require both strength and excellent corrosion protection, Duplex Steel S31803 Washers are the go-to choice.
At Hazlewood Fasteners, we prioritize the safety and quality of our Duplex Steel S31803 washers during delivery. Each washer is thoroughly inspected and individually wrapped in protective packaging to prevent damage. They are then placed in tightly labeled boxes with product details and detailed quantities. Our packaging is designed to protect the environment and physical impact, ensuring that your high-performance washer arrives in prime condition and ready for immediate use.
Hazlewood Fasteners is a leading manufacturer and supplier of high-quality fasteners in Canberra, Australia, with over 8 years of experience serving global industries.
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