Chung Metal, a well-known stainless steel producer in Đà Nẵng, Vietnam, offers high-quality Stainless Steel 347H Round Bars/Rods, a high-carbon variant of SS 347 for greater high-temperature strength and creep resistance. They are niobium-stabilized austenitic stainless steels and thus best suited for application in conditions of prolonged exposure to high temperatures. SS 347H round rods are produced by Chung Metal to very tight dimensional tolerances with a high surface finish. They are weldable, have high strength, and good oxidation resistance and so are very well suited in high-pressure and high-temperature conditions in power generation plants, refineries, and heat processing applications.
SS 347H is 17–19% chromium, 9–13% nickel, and with added columbium (niobium) for carbide stabilization. It has a slightly higher carbon content (0.04–0.10%) than the normal 347, which increases its high-temperature strength. Tensile strength is 550–750 MPa, yield strength is approximately 220–300 MPa, and elongation is 30–40%. The material has very good properties at high temperature (up to 900°C), with excellent creep resistance and corrosion stability after thermal cycling or welding. It is non-magnetic and offers good ductility even after prolonged exposure to heat.
Stainless Steel Round 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 |
When selecting Stainless Steel 347H Round Bars and Rods, consider factors such as high-temperature resistance, corrosion resistance, mechanical strength, fabrication requirements, and cost-effectiveness for your specific industrial application.
Yes, Stainless Steel 347H Round Bars and Rods can be welded. Their niobium content ensures excellent weldability, making them ideal for high-temperature applications when using appropriate filler materials.
Stainless Steel 347H Round Bars and Rods do not have a specific pressure rating. However, they are suitable for high-pressure applications due to their strength, corrosion resistance, and high-temperature stability.
347H round bars are utilized in heat exchangers, superheaters, boilers, chemical processing equipment, refinery parts, and power generation plants. High carbon content provides high creep resistance and makes them suitable for pressure vessels and piping systems that are under high stress over a long period of time. 347H is also generally used in aerospace, nuclear equipment, high-temperature fluids handling, and welded furnace components. It is particularly preferred where intergranular corrosion has to be prevented upon welding. Chung Metal offers 347H round bars in specifications according to customer needs to satisfy critical mechanical and metallurgical specifications in thermal and chemical industries.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Chung Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Da Nang, Vietnam
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