Hemi Metals, located in Hamilton, New Zealand, is a reliable manufacturer and supplier of top-notch Stainless Steel 347 Bars and Rods, specifically designed for high-temperature and corrosion-resistant industrial applications. SS 347 is a niobium-stabilized austenitic stainless steel that effectively prevents intergranular corrosion during welding and when exposed to elevated temperatures. With a focus on precise dimensions, a smooth surface finish, and rigorous quality control, these bars and rods ensure outstanding mechanical reliability and a long service life. Hemi Metals caters to industries like petrochemical, power generation, refinery, and heavy engineering, where strength, durability, and thermal stability are paramount.
Stainless Steel 347 is composed of about 17–19% chromium and 9–13% nickel, with niobium added to enhance stability against carbide precipitation. This composition grants it excellent resistance to intergranular corrosion and solid performance at high temperatures. Typically, SS 347 bars and rods boast a tensile strength of around 515 MPa and a yield strength close to 205 MPa, along with impressive ductility and impact toughness. In their annealed state, these bars are non-magnetic, show good oxidation resistance, and maintain stable mechanical properties even under prolonged exposure to high temperatures.
Standard Specification : ASTM A276, ASTM A479, ASTM A182
Specification : EN, DIN, JIS, ASTM, BS, ASME, AISI
SS 347 Bright Bars : Outside Diameter in the range of 4mm to 200mm
SS 347 Round Bars : Outside Diameter in the range of 4mm to 500mm
SS 347 Flat Bars : 1 / 2” to 10” in thickness range of 1.6mm to 150mm, Custom Size Stainless Steel Flats available
SS 347 Square Bars : 3mm – 100mm
SS 347 Hex Bars : 4mm – 101.6mm
Length : 1 to 6 Meters, Custom Cut Lengths
Finish : Matt Finish, Bright Polished, Black, NO.4 Finish, Rough Turned, BA Finish
Our SS 347 Round bars conforms to NACE MR0175/ISO 15156
Form : Round, Square, Hex (A/F), Rectangle, Billet, Ingot, Forging Etc.
| Grade | Mn | C | P | Si | Cr | S | Ni | Co + Ta | Fe |
| SS 347 | 2 maximum | 0.08 maximum | 0.045 maximum | 0.75 maximum | 17 – 20 | 0.03 maximum | 9 – 13 | 10xC min 1.00 maximum | 62.74 |
| Elongation | Density | Tensile Strength | Melting Point | Yield Strength (0.2%Offset) |
| 40 % | 8 g/cm3 | MPa – 515, Psi – 75000 | 1454 °C (2650 °F) | MPa – 205, Psi – 30000 |
| STANDARD | UNS | AFNOR | WERKSTOFF NR. | BS | JIS | GOST | EN |
| SS 347 | S34700 | – | 1.4550 | – | SUS 347 | 08Ch18N12B | X6CrNiNb18-10 |
Stainless Steel 347 Bars and Rods offer exceptional resistance to corrosion, especially in high-temperature environments. They provide excellent oxidation resistance and are highly resistant to intergranular corrosion, making them ideal for industries like aerospace, chemical processing, and power generation.
These bars and rods are perfect for use in high-temperature applications, including heat exchangers, furnace parts, chemical reactors, and equipment in industries such as aerospace, chemical processing, and power generation, where resistance to oxidation and scaling is crucial.
Stainless Steel 347 Bars and Rods find extensive use in high-temperature and welded structural applications where corrosion resistance and mechanical strength are vital. They are commonly utilized in heat exchangers, boiler components, furnace parts, exhaust systems, pressure vessels, and refinery piping supports. In the petrochemical and power generation sectors, SS 347 bars and rods serve as valve components, fasteners, structural frameworks, and expansion joints. Additionally, they are employed in chemical processing equipment and thermal processing systems, thanks to their excellent weldability, oxidation resistance, and long-term thermal stability.
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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