Nakamura Stainless, located in Pulau Ujong, Singapore, is a trusted manufacturer and supplier of quality stainless steel products, including stainless steel 347 fasteners. These fasteners are specifically designed for high-temperature and corrosive environments where strength, stability, and resistance to intergranular corrosion matter. Stabilized with niobium, stainless steel 347 fasteners are perfect for applications that involve repeated heating and cooling since they resist carbide precipitation during welding. Nakamura Stainless provides precision-engineered fasteners that meet global standards, making them suitable for industries such as aerospace, chemical processing, power generation, and refinery operations.
Stainless steel 347 fasteners are made from an austenitic stainless steel alloy that contains about 17-19% chromium, 9-13% nickel, and niobium (columbium) as a stabilizing element. This composition stops the formation of chromium carbides during welding or high-temperature exposure, providing excellent resistance to intergranular corrosion. These fasteners have a tensile strength of 520-750 megapascals and maintain their mechanical integrity at elevated temperatures up to 870°C. They also offer good formability, weldability, and resistance to oxidation, making them suitable for both structural and pressure-bearing applications.
|
Material |
Specification |
Standards |
Size
|
Length |
|
Stainless Steel 347 Fasteners
|
IS
BS
ASTM
|
ASTM / ASME – A/ SA 193 |
3 mm
to
200 mm
|
M02 to M33
|
| Grade | Mn | N | P | C | S | Cr | Mo | Si | Ni | Other | |
| 347 | min. max | 2.00 | – | 0.045 | – 0.08 | 0.030 | 17.0 19.0 | – | 0.75 | 9.0 13.0 | Nb=10(C+N) 1.0 |
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
| Rockwell B (HR B) max | Brinell (HB) max | ||||
| 347 | 515 | 205 | 40 | 92 | 201 |
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Highly corrosion-resistant, Stainless Steel 347 Nuts are designed to withstand high temperatures and corrosive environments. They are available in various sizes, typically from M4 to M36, and standard dimensions such as 6mm to 30mm in thickness.
Offering excellent resistance to oxidation and corrosion, Stainless Steel 347 Stud Bolts come in sizes ranging from M6 to M36, with lengths varying from 25mm to 300mm. They are ideal for high-temperature and chemical-resistant applications.
Corrosion-resistant and durable, Stainless Steel 347 Bolts are used in extreme environments. They are available in sizes from M6 to M36 and standard lengths from 16mm to 100mm, suitable for high-stress applications and high-temperature conditions.
Known for their high corrosion resistance and stability under heat, Stainless Steel 347 threaded rods are available in diameters from M6 to M36 and lengths ranging from 100mm to 3000mm. They are used in heavy-duty and high-temperature settings.
Featuring excellent resistance to oxidation and corrosion, Stainless Steel 347 screws come in sizes from M3 to M20, with lengths from 10mm to 150mm. They are suited for high-temperature and corrosive environments.
With superior corrosion and high-temperature resistance, Stainless Steel 347 washers are available in diameters ranging from M4 to M36. Thickness varies from 0.5mm to 5mm, making them suitable for various applications where durability is critical.
We always focuse on customer experience by way of our quality Stainless Steel 347 Fasteners. Every consignment comes attached with commercial invoices, packing lists, heat treatment charts, plans for quality assurance, and the NABL-approved lab test reports to establish genuineness and quality with client satisfaction.
Stainless steel 347 fasteners find widespread use in applications that require durability, heat resistance, and corrosion protection. Common applications include fastening components in heat exchangers, pressure vessels, boilers, exhaust systems, and chemical processing equipment. These fasteners are especially suited for environments with thermal cycling, high pressure, and corrosive media. Industries such as oil and gas, aerospace, marine, and power generation depend on 347 fasteners for secure, long-lasting connections that can endure extreme operating conditions while maintaining structural stability and performance.







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