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Home > Stainless Steel >Stainless Steel 347 and 347H Instrumentation Tubing
Iris Pipes and Tubes, based in Cairo, Egypt, stands out as a leading manufacturer and supplier of **Stainless Steel 347 and 347H Instrumentation Tubing**. They offer top-notch tubing solutions tailored for precision applications. Known for their commitment to quality, the company ensures that their products meet international standards and address a wide range of industrial needs. These tubing grades are specifically engineered to withstand high temperatures and corrosive environments, providing exceptional resistance to oxidation and intergranular corrosion. With a strong emphasis on durability, precision, and performance, Iris Pipes and Tubes supports critical sectors like petrochemical, power generation, oil and gas, aerospace, and instrumentation industries.
Stainless Steel 347 and 347H Instrumentation Tubing contains chromium, nickel, and columbium (niobium), providing excellent corrosion resistance and high temperature stability With a composition of approximately 18% chromium and 10% nickel, this compound provides improved strength and oxidation resistance. Technical features include a tensile strength of 75,000 psi (517 MPa) and a yield strength of 30,000 psi (207 MPa). Advantages include exceptional intergranular corrosion resistance, excellent weldability and suitability for high temperature applications, making it ideal for use in the pharmaceutical, energy generation and aerospace industries.
| Grade | Range | Ni | C | Cr | Mn | Si | P | S |
|---|---|---|---|---|---|---|---|---|
| 347 | Min. | 9.0 | – | 17.0 | – | – | – | – |
| Max. | 13.0 | 0.08 | 20.0 | 2.00 | 1.00 | 0.040 | 0.030 | |
| 347H | Min. | 9.0 | 0.04 | 17.0 | – | – | – | – |
| Max. | 13.0 | 0.10 | 19.0 | 2.00 | 1.00 | 0.045 | 0.030 |
| Grade | Tensile Strength min (MPa) | Yield Strength 0.2% Proof min (MPa) | Hardness | Elongation (% in 50mm) min | |
|---|---|---|---|---|---|
| Brinell max (HB) | Rockwell B max (HR B) | ||||
| 347/347h | 515 | 205 | 201 | 92 | 40% |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
**Stainless Steel 347 and 347H Instrumentation Tubing** are niobium-stabilized austenitic stainless steels, featuring around 17–19% chromium, 9–13% nickel, along with small amounts of niobium and tantalum to prevent carbide precipitation. The 347H grade has a higher carbon content, which boosts its strength and creep resistance at elevated temperatures. Both grades boast impressive mechanical properties, including high tensile strength, good ductility, and outstanding oxidation resistance up to about 900°C. Their unique chemical makeup ensures excellent weldability, formability, and resistance to intergranular corrosion in both thermal and chemical settings.
Iris Pipes and Tubes, one of the largest suppliers of Stainless Steel 316 and 316L Instrumentation Tubing in Alexandria, Egypt, offers a comprehensive range of high-quality pipes and tubes suitable for various industrial applications. Their extensive inventory and commitment to exceptional service make them a go-to choice for stainless steel products in the region.
| Grade | UNS No | Old British | Euronorm | Japanese JIS | Swedish SS | GOST | ||
|---|---|---|---|---|---|---|---|---|
| BS | En | No | Name | |||||
| 347 | S34700 | 347S31 | – | 1.4550 | X6CrNiNb18-10 | SUS 347 | 2338 | 08Ch18N12B |
| 347h | S34709 | – | – | 1.4961 | – | SUS 347h | – | – |
**Stainless Steel 347 and 347H Instrumentation Tubing** are commonly utilized in precision and control systems that function under high pressure, temperature, and corrosive conditions. Typical applications include instrumentation lines, measurement and control systems, heat exchangers, chemical processing equipment, and high-temperature steam service. These tubes are perfect for industries such as petrochemical, refinery, aerospace, and power generation, where reliability and accuracy are crucial. Their remarkable resistance to oxidation and scaling also makes them suitable for furnace components and exhaust systems, ensuring a long service life and consistent performance.
Stainless Steel 347 and 347H Instrumentation Tubing is widely used in various industries due to excellent corrosion resistance and high temperature stability Common applications are chemical reactions, where it dangerous waters go safely; energy production, for steam and gas; and space, for the interiors of the buildings. In addition, these vessels are used in oil and gas exploration, chemical manufacturing, and food processing equipment. Their durability and reliability make them suitable for instrument systems, ensuring precise measurement and control in challenging environments.
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