Ojas Pipes and Tubes, a leading manufacturer and supplier based in Kolkata, India, is all about providing top-notch Stainless Steel 347 Square Bars and Rods. These products are crafted for tough industrial tasks that demand high-temperature strength and resistance to corrosion. With a commitment to precision engineering, Ojas offers SS 347 square bars in various sizes and finishes, perfect for both structural and mechanical uses. Thanks to their rigorous quality control, prompt deliveries, and a focus on customer satisfaction, Ojas Pipes and Tubes has become a reliable partner for clients in the automotive, power generation, petrochemical, and aerospace sectors.
Stainless Steel 347 Square Bars and Rods are made up of 17–19% chromium, 9–13% nickel, and are stabilized with niobium (columbium) to boost their resistance to intergranular corrosion. This material showcases impressive tensile strength of at least 515 MPa, a minimum yield strength of 205 MPa, and an elongation of around 35%. These square bars maintain excellent mechanical stability even at high temperatures, making them perfect for welded applications. They also provide high creep strength, oxidation resistance, and good formability, which is essential in thermal environments where other austenitic stainless steels might struggle.
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 347H | 0.04 – 0.10 | 17.0 – 19.0 | 2.00 max. | 9.0-12.0 | 0.045 max. | 0.03 max. | 0.75 max. |
| Element | Density | Melting Range,℃ | Tensile Strength | Yield Strength | Elongation | Hardness (Brinell) |
| SS 347H | 7.96 | 1450 ℃ | 515 | 205 | 40 | 201 |
| STANDARD | WERKSTOFF NR. | UNS |
| SS 347H | 1.4550 | S34709 |
| 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 347H Square Bars offer excellent high-temperature strength, resistance to intergranular corrosion, and superior weldability. They are ideal for applications in extreme environments, such as chemical processing and heat exchangers.
Yes, Stainless Steel 347H Square Bars are fully recyclable and retain their properties after recycling. This makes them an environmentally sustainable choice for various applications.
No, Stainless Steel 347H Square Bars are generally non-magnetic in their annealed condition. However, slight magnetism may develop after cold working.
Stainless Steel 347 Square Bars and Rods find their place in industries where high-temperature performance and resistance to sensitization are vital. You’ll often see them in heat exchangers, furnace equipment, boiler components, chemical tanks, pressure vessels, and superheater tubes. These bars are also utilized in aerospace structures, refineries, and food processing equipment, particularly in welded assemblies that face continuous heat cycles. Their square shape not only adds structural strength but is also a popular choice for machine frames, support components, and architectural fabrication. The material’s stability and corrosion resistance guarantee dependable performance in demanding environments.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Rupal Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Delhi, India
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