Maduka Metals, a well-respected manufacturer and supplier located in Abuja, Nigeria, is renowned for its production of top-notch **Stainless Steel 347H Square Bars and Rods**. These bars are crafted to excel in high-temperature and corrosive settings, delivering outstanding strength, durability, and resistance to intergranular corrosion. By utilizing cutting-edge manufacturing techniques and high-quality raw materials, Maduka Metals guarantees that each product adheres to strict international standards for quality and precision. The 347H grade, a stabilized austenitic stainless steel, is an upgraded version of 347, featuring a higher carbon content that enhances creep strength and stability at elevated temperatures.
**Stainless Steel 347H Square Bars and Rods** primarily consist of **iron**, with **17–19% chromium**, **9–13% nickel**, and **0.04–0.10% carbon**, along with **niobium (columbium)** added to prevent carbide precipitation. This unique composition results in impressive **tensile strength (515–700 MPa)**, exceptional **oxidation resistance**, and improved **creep and stress rupture properties**. The alloy maintains its structural integrity at temperatures reaching **870°C**, making it perfect for continuous exposure to high heat.
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.
These **Stainless Steel 347H Square Bars and Rods** find extensive applications in **heat exchangers, furnace components, boiler tubes, and petrochemical processing equipment** due to their remarkable ability to endure high temperatures and corrosive environments. They are also utilized in **refineries, power plants, aerospace, and chemical industries**, where resistance to oxidation and intergranular corrosion is essential. These bars perform exceptionally well under cyclic heating conditions, preserving their strength and toughness. With their combination of high-temperature performance, durability, and corrosion resistance, 347H stainless steel stands out as an excellent choice for demanding industrial and thermal applications.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Maduka Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Abuja, Nigeria
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