Hemi Metals, located in Hamilton, New Zealand, is a reliable manufacturer and supplier of high-quality Stainless Steel 347 Square Bars and Rods, perfect for industrial applications that require resistance to high temperatures and corrosion. SS 347 is a niobium-stabilized austenitic stainless steel, specifically designed to avoid intergranular corrosion during welding and when exposed to elevated temperatures for extended periods. With a focus on precise dimensions, sharp square edges, and rigorous quality control, these square bars ensure outstanding mechanical reliability and a long lifespan. Hemi Metals caters to industries like petrochemical, power generation, refinery, and heavy engineering, where durability, thermal stability, and corrosion resistance are essential.
Stainless Steel 347 is composed of about 17–19% chromium and 9–13% nickel, with niobium included to enhance stability against carbide precipitation. This unique blend offers remarkable resistance to intergranular corrosion and good oxidation resistance at high temperatures. Typically, SS 347 square bars boast a tensile strength of around 515 MPa and a yield strength close to 205 MPa, along with impressive ductility and impact toughness. These bars are non-magnetic when annealed, provide reliable weldability, and maintain consistent mechanical properties even after prolonged exposure to moderately 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 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.
Stainless Steel 347 Square Bars and Rods find extensive use in high-temperature and welded structural applications where both corrosion resistance and mechanical strength are crucial. You’ll often see them in structural frames, heat exchanger supports, furnace components, boiler structures, exhaust system supports, and parts for pressure vessels. In the petrochemical and power generation sectors, SS 347 square bars are utilized for valve bodies, structural supports, expansion joints, and piping frameworks. They’re also commonly found in chemical processing equipment and thermal processing systems.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Hemi Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Hamilton New Zealand
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