Stainless Steel 347H Square Bars and Rods are among the high-end stainless steel products that George Metals, a reputable manufacturer and supplier with its headquarters located in Houston, USA, produces. George Metals, which serves a broad range of industries like petrochemical, power generation, aerospace, and marine, is well-known for their dedication to quality, accuracy, and dependability. Their 347H square bars and rods provide superior corrosion protection and increased creep resistance because they are designed for high-temperature use. George Metals guarantees prompt delivery, affordable prices, and tailored solutions to satisfy the exacting requirements of both domestic and foreign customers thanks to a robust distribution network and adherence to international standards.
High-carbon stainless steel 347H square bars and rods are made of 17–20% chromium and 9–13% nickel, with 0.04–0.10% carbon and columbium (niobium) added. Its intergranular corrosion resistance and high-temperature strength are improved by this composition. The alloy has a yield strength of 205 MPa, a tensile strength of about 515 MPa, and an elongation of about 40%. It is appropriate for thermal applications and stress-bearing structures because it retains its superior mechanical qualities in high temperature settings. By preventing carbide precipitation, the niobium stabilisation enhances performance during welding and prolonged heat exposure.
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 | – | – |
In many different industries, stainless steel 347H square bars and rods are frequently utilised in high-temperature and high-stress applications. They are used in reactor vessels, furnace parts, and heat exchangers in the petrochemical and refinery industries. They are used in boiler tubes, piping systems, and superheaters in the power generation sector. Their mechanical strength and resistance to corrosion at high temperatures make them ideal for use in marine and aerospace applications. Additionally, they are used in chemical processing equipment, pressure vessels, and welded fabrication exposed to high temperatures. The 347H alloy is particularly well-suited for heavy-duty, welded environments that necessitate extended heat exposure due to its resistance to intergranular corrosion following welding.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
George Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Houston, USA
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