Dhruv Metals, located in Hyderabad, India, has earned a solid reputation as a reliable manufacturer and supplier of Stainless Steel 347H Square Bars and Rods. They provide top-notch materials specifically designed for high-temperature and corrosive settings. Stainless Steel 347H is a stabilized austenitic stainless steel grade that includes niobium (also known as columbium) and has a higher carbon content, which gives it remarkable resistance to intergranular corrosion and enhances its creep strength. Dhruv Metals takes pride in delivering precisely crafted SS 347H square bars and rods that comply with international standards, catering to the needs of industries like petrochemical, power generation, and engineering with dependable and long-lasting solutions.
The composition of Stainless Steel 347H Square Bars and Rods includes chromium (17.0–19.0%), nickel (9.0–13.0%), carbon (0.04–0.10%), and niobium (at least ten times the carbon content), along with carefully controlled levels of manganese, silicon, phosphorus, and sulfur. These bars boast a minimum tensile strength of 515 MPa, a yield strength of 205 MPa, an elongation of 40%, and a Brinell hardness of up to 201 HB. The addition of niobium not only stabilizes the material but also enhances its resistance to carbide precipitation during welding, improving its mechanical performance at high temperatures.
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 347H Square Bars and Rods find extensive use in high-temperature service environments, particularly in sectors like chemical processing, petrochemical, oil and gas, and power generation. They are commonly utilized in applications such as heat exchangers, boiler tubes, superheaters, furnace components, and high-pressure piping systems. Thanks to their excellent creep resistance and weldability, these bars are perfect for parts that experience thermal cycling and elevated temperatures. Their ability to endure harsh conditions while maintaining structural integrity under stress makes SS 347H square bars a go-to choice for challenging industrial applications.






We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Dhruv Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Hyderabad , India
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