Chuck Metals stands out as a top manufacturer and supplier of Stainless Steel 347 Square Bars and Rods right here in Singapore. We take pride in delivering premium-grade materials to clients not just in Pulau Ujong, but throughout the Southeast Asian region. Our Stainless Steel 347 is a niobium-stabilized austenitic stainless steel, celebrated for its remarkable resistance to intergranular corrosion, particularly after welding or when exposed to high temperatures. We produce our 347 square bars in line with ASTM A276 and A479 standards, guaranteeing high strength, precise dimensions, and a superior finish. These bars come in various sizes, making them perfect for applications in heat exchangers, pressure vessels, and high-temperature process equipment.
Typically, Stainless Steel 347 Square Bars and Rods consist of 17–20% chromium, 9–13% nickel, and niobium, which acts as a stabilizing element to prevent carbide precipitation. This alloy boasts a tensile strength ranging from 515 to 750 MPa, a yield strength of 205 MPa, and exceptional resistance to creep and stress-rupture at elevated temperatures. It maintains its structural integrity even at temperatures up to 870°C and shows impressive resistance to acidic environments and oxidizing agents. In its annealed state, 347 is non-magnetic and is well-regarded for its good weldability, formability, and mechanical stability.
Dimensions : ASTM, ASME
Standard : ASTM / ASME SA A582, A276, A564, ASTM A484, 484M
Surface : hrap, hot rolled pickled or sand blasting finished, cold drawn, polished, hairline
Size : Tolerance: H8, H9, H10, H11, H12, H13K9, K10, K11, K12
| Element | C | Cr | Mn | Ni | P | S | Si |
| SS 347 | 0.08 max. | 17.0 – 19.0 | 2.00 max. | 9.0-13.0 | 0.045 max. | 0.03 max. | 0.75 max. |
| Element | Density | Melting Range,℃ | Tensile Strength | Yield Strength | Elongation | Hardness (Brinell) |
| SS 347 | 7.96 | 1450 ℃ | 515 | 205 | 40 | 201 |
| STANDARD | WERKSTOFF NR. | UNS |
| SS 347 | 1.4961 | S34700 |
| SQUARES | ||
|---|---|---|
| Size(mm) | WT PER FEET IN KGS | WT PER MTR IN KGS |
| 16 | 0.62 | 2.05 |
| 18 | 0.79 | 2.59 |
| 20 | 0.76 | 2.49 |
| 22 | 1.18 | 3.87 |
| 25 | 1.52 | 5.00 |
| 28 | 1.91 | 6.27 |
| 30 | 2.19 | 7.20 |
| 32 | 2.50 | 8.19 |
| 36 | 3.16 | 10.37 |
| 38 | 3.52 | 11.55 |
| 40 | 3.90 | 12.80 |
| 45 | 4.94 | 16.20 |
| 50 | 6.10 | 20.00 |
| 56 | 7.65 | 25.08 |
| 60 | – | – |
| 65 | – | – |
| 70 | – | – |
| 75 | – | – |
| 80 | – | – |
| 90 | – | – |
| 100 | – | – |
Stainless Steel 347 square bars are generally resistant to galvanic corrosion due to their high chromium content. However, if exposed to a more anodic material in a corrosive environment, galvanic corrosion may still occur.
Stainless Steel 347 square bars and rods are typically non-magnetic in the annealed condition. However, they may exhibit slight magnetism if cold-worked or hardened.
Yes, Stainless Steel 347 Square Bars can be used for underground applications due to their excellent corrosion resistance and ability to withstand high temperatures. Their durability makes them suitable for harsh environments.
These Stainless Steel 347 Square Bars and Rods are perfect for a variety of applications, including chemical processing, petrochemical plants, aerospace components, and power generation systems, thanks to their durability and high-temperature resistance. You’ll also find them in boiler tubes, exhaust manifolds, heat exchangers, and superheater tubes, where resistance to intergranular corrosion is essential. Plus, 347 square bars are great for welded structures, pressure vessels, and pharmaceutical equipment, providing a long service life even in environments that involve thermal cycling, oxidation, and mild acid exposure.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Chuck Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Singapore, Singapore
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