Nakamura Stainless, located in Pulau Ujong, Singapore, manufactures and supplies high-quality stainless steel products, including stainless steel 347 bars. These bars are known for their strong resistance to intergranular corrosion and high-temperature strength, making them ideal for welded structures and settings exposed to thermal stress. Stainless steel 347 is a niobium-stabilized austenitic stainless steel that prevents carbide precipitation during welding. Nakamura Stainless focuses on precision manufacturing and strict quality control, ensuring that their 347 bars are a dependable choice for industries like chemical processing, power generation, aerospace, and refineries.
Stainless steel 347 bars contain about 17 to 19% chromium, 9 to 13% nickel, and niobium (columbium), which helps stabilize the alloy against chromium carbide formation. This enhances corrosion resistance, particularly after welding or exposure to high temperatures. These bars typically provide tensile strength ranging from 520 to 750 megapascals and maintain great mechanical properties at temperatures up to 870°C. The alloy also has good weldability and formability, which makes it suitable for many industrial applications that need thermal stability and corrosion protection.
| Specifications | ASTM A276 / ASME SA276 |
| Dimensions | ASTM, ASME |
| Range | 3.17 MM TO 350 MM DIA |
| Diameter | 25mm to 152mm |
| Length | 1 to 6 Meters, Custom Cut Length |
| Finish | Bright, Polish & Black |
| Form | Round, Square, Hex (A/F), Rectangle, Wire (Coil Form), Wiremesh, Billet, Ingot, Forging |
| Condition | Cold Drawn & Polished Cold Drawn, Centreless Ground & Polished |
|
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 |
Contact us to get a quick quote for your requirement.
We ensures that all stainless steel 347 frames are rigorously tested for quality and performance. Our products are tested for technical properties, corrosion resistance and durability. We assure customers of high industry standards and compliance, offering comprehensive certifications including Mill Test Certificates (MTC) and third-party inspections.
Corrosion-resistant product with high-temperature stability, available in diameters ranging from 0.5″ to 12″. Ideal for use in aerospace, chemical processing, and power generation industries where durability is essential.
This product features exceptional resistance to oxidation, available in thicknesses from 0.25″ to 6″ and widths up to 12″. Perfect for structural components and industrial applications.
Stainless Steel 347 Square Bars are Corrosion-resistant product designed for durability, offered in sizes from 0.5″ to 6″ on each side. Suitable for use in high-temperature environments and demanding industrial applications.
This Corrosion-resistant product with dimensions ranging from 0.5″ x 1″ to 6″ x 12″. Ideal for heavy-duty applications where strength and resistance to harsh conditions are required.
Stainless Steel 347 Hexagonal Bars are Corrosion-resistant product with sizes from 0.5″ to 4″ across flats. Used in aerospace and chemical industries, offering high performance in extreme environments.
Stainless Steel 347 T-Bars dimensions from 0.5″ x 0.5″ to 6″ x 6″. Suitable for structural support and applications requiring high-temperature resistance and reliability.
Stainless steel 347 bars are widely used in situations where resistance to high temperatures and intergranular corrosion is essential. Common applications include heat exchanger components, boiler tubes, pressure vessels, exhaust manifolds, and chemical processing equipment. Their stability during thermal cycling and resistance to sensitization make them perfect for welded assemblies and high-temperature service environments. Industries such as petrochemical, aerospace, oil and gas, and power generation count on 347 bars for their durability, reliability, and consistent performance in tough operating conditions.
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