Hemi Metals, located in Hamilton, New Zealand, is a reliable manufacturer and supplier of top-notch Stainless Steel 347H Rectangular Bars, specifically designed for high-temperature and pressure-sensitive industrial applications. SS 347H is a high-carbon austenitic stainless steel that’s niobium-stabilized, crafted to provide exceptional strength and creep resistance even at elevated temperatures. With meticulous attention to dimensional accuracy, a smooth surface finish, and rigorous quality control, these rectangular bars guarantee outstanding mechanical reliability and long-lasting thermal stability. Hemi Metals caters to industries like power generation, petrochemical, refinery, and heavy engineering, where consistent high-temperature performance is crucial.
Stainless Steel 347H is composed of about 17–19% chromium and 9–13% nickel, featuring a higher carbon content and niobium stabilization to avoid carbide precipitation during high-temperature use. This unique blend ensures remarkable resistance to intergranular corrosion and impressive creep strength. Typically, SS 347H rectangular bars offer tensile strength ranging from 515–620 MPa and yield strength between 205–240 MPa, along with good ductility and impact toughness. These bars are non-magnetic when annealed and maintain stable mechanical properties even after extended exposure to high temperatures.
Stainless Steel Rectangular Bar Specification : ASTM A276 / A479, ASME SA276 / A479
Dimension Standard : EN, DIN, JIS, ASTM, BS, ASME, AISI
Size : 14mm-300mm
Thickness : 50 mm to 6000 mm Long
Length : 1 To 6 Meters, Custom Cut Length
Form : Round, Square, Hex(A/F), Rectangle, Billet, Ingot, Forging Etc.
| Grade | C | Mn | Si | P | S | Cr | Ni | Ti |
| 347H | 0.04 – 0.10 | 2.00 max. | 0.75 max. | 0.045 max. | 0.03 max. | 17.0 – 19.0 | 9.0-13.0 | 8 x C min. |
| (1.00 max.) |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 8.0 g/cm3 | 1454 °C (2650 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 35 % |
| STANDARD | WERKSTOFF NR. | UNS |
| SS 347H | 1.4961 | S34709 |
To maintain Stainless Steel 347H Rectangular Bars, regularly clean them with a mild detergent and water to remove contaminants. Avoid exposure to harsh chemicals and ensure proper storage in dry, well-ventilated areas to prevent corrosion.
Yes, Stainless Steel 347H Rectangular Bars are fully recyclable. Their high-quality material allows for efficient reuse in manufacturing processes, contributing to sustainability and reducing environmental impact.
Stainless Steel 347H Rectangular Bars generally do not require corrosion protection coatings due to their inherent resistance to oxidation and corrosion. However, additional coatings may be used in highly aggressive environments for enhanced protection.
Stainless Steel 347H Rectangular Bars find extensive use in high-temperature and high-pressure settings where both strength and corrosion resistance are vital. They are commonly utilized in boiler structures, superheater supports, heat exchanger frames, furnace components, and exhaust system structures. In the petrochemical and power generation sectors, SS 347H rectangular bars serve as pressure vessels, structural supports, valve bodies, and piping frameworks. They are also employed in refinery systems, gas processing units, and thermal processing equipment, thanks to their excellent weldability.
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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