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Hamad Fasteners, a reputable manufacturer and supplier based in Riyadh, Saudi Arabia, is well-known for providing top-notch fastening products that prioritize strength, durability, and reliability. Among their impressive range of offerings, Duplex Steel S31803 washers stand out for their remarkable blend of corrosion resistance and mechanical strength. Crafted with precision and in line with international standards, these washers are essential in applications where resistance to stress corrosion cracking and pitting is crucial. With a strong commitment to quality, timely delivery, and customer satisfaction, Hamad Fasteners proudly supports various industries, including marine, petrochemical, offshore, desalination, and construction, with reliable fastening solutions.
Duplex Steel S31803 washers feature a well-balanced microstructure of austenite and ferrite, incorporating chromium, molybdenum, and nickel in exact proportions. This unique composition offers outstanding resistance to localized corrosion, chloride stress corrosion cracking, and erosion. On the mechanical side, these washers deliver high tensile and yield strength, excellent toughness, and good fatigue resistance, ensuring long-lasting durability even in harsh operating conditions. Their exceptional balance of strength and corrosion resistance makes them a trustworthy choice for demanding industrial environments.
| 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.
These washers find extensive use in industries where high strength and superior corrosion resistance are non-negotiable. Typical applications include marine hardware, desalination plants, chemical processing equipment, offshore oil and gas structures, and heat exchangers. They are also utilized in the paper and pulp industries, structural frameworks, and seawater piping systems. The combination of mechanical strength, resistance to chloride environments, and extended service life makes Duplex Steel S31803 washers the perfect fastening solution for critical applications in aggressive operating conditions.
At Hamad 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.
Hamad Fasteners is one of the Industrial suppliers and manufacturers of quality fasteners in Riyadh, Saudi Arabia, that has spent more than 12 years serving various industries.
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