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Poang Fasteners is a leading manufacturer, supplier and exporter based in Da Nang, Vietnam, specializing in high-quality stainless steel 347H washers. We are dedicated to maintaining strict industry standards in durability and reliability throughout our manufacturing and packaging processes. Our range of sizes is designed to meet diverse application needs across various industries, ensuring compatibility and efficiency. We are committed to providing reliable solutions for all your fastening requirements, making us a preferred partner in the region.
Poang Fasteners, a well-established Da Nang, Vietnam-based manufacturer and supplier, specializes in offering high-performance fastening solutions to industries globally. Of its cutting-edge range of products, Stainless Steel 347H Washers are particularly renowned for their superior strength, durability, and high-temperature resistance. Niobium (columbium) stabilized specially, the washers show great resistance to intergranular corrosion even at operating environments of up to 900°C. Manufactured to satisfy the specific needs of chemical, aerospace, oil & gas, and power generation industries, Poang Fasteners maintains high-quality standards, and Stainless Steel 347H Washers are dependable for most stringent and critical applications.
| Grade | C | Mn | Si | P | S | Cr | Cb | Ni | Fe |
| SS 347H | 0.04 – 0.10 | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 – 20.00 | 8xC – 1.10 | 9.00 – 13.00 | 63.72 min |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 8.0 g/cm3 | 1454 °C (2650 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 35 % |
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SS 347H Washer Specifications |
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| Specifications | : | ASTM A193 ASME SA193 |
| Standard | : | DIN, ASTM, BS and all International Standards |
| Length | : | M02 to M33 |
| Size | : | 3 mm to 200 mm |
| Type | : | Flat Washer, Lock Washer, Sealing Washer, Split Washer, Slot Washer, Machine Washer, Star Washer SPRINGS – Wire Spring & Flat Spring |
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.
Stainless Steel 347H Washers consist predominantly of iron, chromium (17–19%), nickel (9–13%), and columbium/stabilizing niobium, stabilizing the alloy against carbide precipitation at high temperatures. This composition confers excellent resistance to stress cracking and intergranular corrosion. They are mechanically high in tensile and yield strength, superior creep strength, and long-term stability under high-heat conditions. The thermal stability and corrosion resistance qualify them to withstand service up to 900°C continuously. With strong mechanical integrity and high toughness, these washers ensure faultless performance under severe and high-stress conditions.
Stainless Steel 347H Washers have extensive use in industries requiring high corrosion and temperature resistance. In chemical plants, they shield pipelines, flanges, and processing equipment from acidic and oxidizing environments. In the aerospace industry, they provide safe fastening in parts exposed to high heat and stress. They are also crucial in oil and gas refineries, where they withstand sulfide stress cracking, and nuclear reactors, where radiation and heat resistance are critical. Their reliability and durability make them an irreplaceable part of power plants, heat exchangers, and other industrial settings that require heavy-duty fastening solutions.
Poang Fasteners is a leading manufacturer and supplier of high-quality fasteners in Da Nang, Vietnam, with over 8 years of experience serving global industries.
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