347 Stainless Steel Foil (UNS S34700 / W.Nr. 1.4550)
Precision 347 foil for petroleum refining and exhaust systems
Get a quote for SEATHER’s 347 stainless steel foil (UNS S34700). ISO certified China supplier. Precision foil for petroleum refining and exhaust systems. Contact us.
347 is an austenitic stainless steel containing niobium. In terms of chemical composition, 347 can be seen as 304 stainless steel with the addition of niobium. It is also referred to as the UNS S34700 / W.Nr. 1.4550 stainless steel.
Grade 347 exhibits good corrosion resistance in acid, alkali and salt liquid. It has good oxidation resistance and weldability in air below 800°C. In comparison with 304 stainless steel foil, 347 stainless steel foil features excellent high temperature stress rupture and high temperature creep resistance performance.
Whatever size at whatever tight tolerance of 347 stainless steel foil you demand, SEATHER here is sure to have it!
347 Stainless Steel Foil (UNS S34700 / W.Nr. 1.4550) Specifications Srtandard
| Product Name | 347 Stainless Steel Foil |
| Grades | 347/UNS S34700/EN 1.4550 |
| Standards | ASTM, ASME, DIN, JIS, GB/T, etc. |
| Thickness | 0.01mm-0.1mm |
| Width | 1mm-1000mm |
| Edge | Slit/Round/Deburred |
| Quantity Tolerance | ±10% |
| Paper Core Internal Diameter | Ø 150mm, Ø300mm, Ø400mm, Ø500mm paper core, special internal diameter core and without paper core on special request |
| Surface Finish | Mill/Bright/TR/Polishing/Annealing |
| Applications | Petrochemical equipment, reactor, Heat exchanger, Power plant flue gas desulfurization device, etc. |
| Packaging | Wooden pallet/Wooden case |
| Payment Terms | 30% TT deposit and 70% balance before shipment, 100% LC at sight |
| Delivery Time | 7-10 working days |
| MOQ | 10 Kgs or as discussed |
| Shipping Port | Shanghai/Ningbo port |
| Sample | The sample of 347 stainless steel foil is available |
| Remark | 347 stainless steel foils strips can be customized |
347 Stainless Steel Foil (UNS S34700 / W.Nr. 1.4550) Applications & Usages
- Petrochemical, food, paper, etc.;
- Exhaust manifold and branch pipe of aero engine;
- Turbine compressor hot gas pipeline;
- Parts that work under small loads and at temperatures not exceeding 850°C;
- Others Industries
347 Stainless Steel Foil (UNS S34700 / W.Nr. 1.4550) Drawing Formula
Formula: m = W (m) × THK (mm) × L (m) × ρ (g/cm³)
W = Width, THK = Thickness, L = Length, ρ = Density
What is 347 Stainless Steel (UNS S34700 / W.Nr. 1.4550)
347 is an austenitic stainless steel containing niobium. In terms of chemical composition, 347 can be seen as 304 stainless steel with the addition of niobium. It is also referred to as the UNS S34700 / W.Nr. 1.4550 stainless steel.
Grade 347 exhibits good corrosion resistance in acid, alkali and salt liquid. It has good oxidation resistance and weldability in air below 800°C. In comparison with 304 stainless steel, 347 stainless steel features excellent high temperature stress rupture and high temperature creep resistance performance.
347 Stainless Steel Foil (UNS S34700 / W.Nr. 1.4550) Chemical Composition
| Grade | Standard | C | Si | Mn | P | S | Cr | Ni | Mo |
| 347 | ASTM A240 | ≤0.08 | ≤0.75 | ≤2.00 | ≤0.045 | ≤0.030 | 17.00-19.00 | 9.00-13.00 | – |
347 Stainless Steel Foil (UNS S34700 / W.Nr. 1.4550) Mechanical Properties
| Element | Yield Strength | Melting Point | Density | Tensile Strength | Elongation |
| 347 | ≥205Mpa | 1150 °C | 7.93 g/cm3 | ≥515Mpa | 40 % |

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More Information About 347 Stainless Steel Foil (UNS S34700 / W.Nr. 1.4550)
When you choose to buy 347 Stainless Steel Foil (UNS S34700 / W.Nr. 1.4550), there have some important points we need to know before we get started.
Features of 347 stainless steel foil
- Exceptional Corrosion Resistance: Offers general corrosion protection equivalent to Grade 304, but excels in aggressive chemical environments.
- Anti-Sensitization Properties: Specifically engineered to resist intergranular corrosion within the critical temperature range of 427°C to 816°C (800°F–1500°F).
- Enhanced High-Temp Creep Strength: Maintains structural integrity and creep-rupture properties in oxidizing atmospheres up to 816°C.
- Cryogenic Versatility: Retains excellent toughness and mechanical properties in low-temperature and sub-zero applications.
- Seamless Fabrication: Exhibits high weldability and formability, suitable for complex industrial machining.
How to Purchase 347 Stainless Steel Foil (UNS S34700 / W.Nr. 1.4550)
When purchasing strips foils, it’s essential to have the right materials and information to ensure a smooth procurement process and to get the products that meet your needs.
Here’s what you need to provide:
1. Material: Specify the grade material, 347 (UNS S34700)
2. Size: Specify the strip’s thickness, width, edge, inner diameter, outer diameter.
3. Quantity: Provide the exact number of strips required for an accurate quotation.
4. Technical specifications: Include technical specifications and drawings. If there are unique design requirements, detailed drawings can be attached.
5. Quality standards: Specify quality standards and inspection requirements, such as the need for third-party inspection, material certification, and inspection reports.
6. Special requirements: Specify any special surface treatment, polishing, corrosion resistance requirements, etc.
7. Packaging requirements: If there are specific packaging needs, such as protective or anti-corrosion packaging, please specify.
8. Delivery time: Specify the expected delivery time and location.
By preparing the above information, you can streamline the process of purchasing strips and ensure that you receive high-quality products that meet your requirements.
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