347H Stainless Steel Strip Coil
347H stainless steel strips Coils for high temperature corrosion resistant applications
As a leading stainless steel supplier in China, SEATHER produces and manufactures high cost-effective 347H stainless steel strip coil for your project.
347H stainless steel is the high-carbon version of 347 stainless steel, designed for superior performance in high-temperature environments. It is also referred to as the UNS S34709 stainless steel.
It was developed for higher strength at temperatures above 1000°F (537°C and for enhanced creep resistance.
Grade 347H stainless steel strip coil in strict accordance with ASTM A240 standard. We supply flat, high-precision materials in various sizes according to the standard. You can confirm with our team any needs.
As an ISO-certified supplier, we are committed to delivering high-quality, corrosion-resistant, and heat-resistant alloy materials to clients worldwide.
347H Stainless Steel Strip Coil Specifications and Srtandard
| Product Name | 347H Stainless Steel Strip Coil |
| Grades | 347H |
| Standards | ASTM, ASME, DIN, JIS, GB/T, etc. |
| Thickness | 0.1mm-3.0mm |
| Width | 1mm-650mm |
| 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 | 500 Kgs |
| Shipping Port | Shanghai/Ningbo port |
| Sample | The sample of 347H stainless steel strip is available |
| Remark | 347H stainless steel strips can be customized |
347H Stainless Steel Strip Coil Applications and Usages
Grade 347H (UNS S34709) is a high-carbon, columbium-stabilized austenitic stainless steel favored for its exceptional creep strength. Its unique properties make it essential across several critical sectors:
Chemical & Petrochemical Processing: Ideal for heat exchangers, refinery equipment, and reactor vessels handling highly corrosive media.
High-Temperature Power Generation: Used extensively in superheater tubes and steam headers where temperatures exceed 800°F.
Pharmaceutical & Food Production: Provides a sanitary, corrosion-resistant surface for large-scale manufacturing and storage equipment.
Aerospace & Defense: Utilized in exhaust manifolds and collector rings due to its resistance to intergranular corrosion.
347H Stainless Steel Strip Coil Drawing and Formula
Formula: m = W (m) × THK (mm) × L (m) × ρ (g/cm³)
W = Width, THK = Thickness, L = Length, ρ = Density
What is 347H Stainless Steel
Grade 347H austenitic stainless steel, also referred to as the UNS S34709 / W.Nr. 1.4961 alloy.
Stainless steel 347H is the higher carbon version of alloy. It was developed for higher strength at temperatures above 1000°F (537°C and for enhanced creep resistance.
The machinability of grade 347H is slightly tougher than grade 304. However by the use of constant positive feeds and by slow speeds, the hardenability of this steel can be minimized. By using the method of resistance and fusion grade 347H stainless steel can also be welded.
This alloy is widely used in the aeronautical industry, such as turbine collector rings and exhaust systems, expansion joints and also for high temperature chemical process equipment.
Grade 347H stainless steel is available in forms including pipes, tubes, round rod, bar, plate, sheet, strips and foils products.
347H Stainless Steel Strip Coil Chemical Composition
| Grade | Standard | C | Si | Mn | P | S | Cr | Ni | Nb+Cb |
| 347H | ASTM A240 | ≤0.10 | ≤0.75 | ≤2.00 | ≤0.045 | ≤0.030 | 17.00-19.00 | 9.0-13.0 | 0.32-1.00 |
347H Stainless Steel Strip Coil Mechanical Properties
| Density | Melting Range | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 7.96 g/cm3 | 1010 – 1193°C | ≥515Mpa | ≥205Mpa | ≥40% |
Metal Cutting Service
Custom Metal Cutting Services For Diverse Industries
CNC Machining Services
Custom CNC machining parts in nickel alloy and stainless steel delivery in as fast as 3 days
Sheet Metal Fabrication
SEATHER’s custom sheet metal fabrication services offer a fast and cost-effective solution for your projects.
Metal Welding Service
Seather provides some of the best solutions ranging from custom metal welding and related services.
More Information About 347H Stainless Steel Strip Coil
When you choose to buy 347H Stainless Steel Strip Coil, there have some important points we need to know before we get started.
Features of 347H Stainless Steel Strip Coil
Grade 347H (UNS S34709) is a columbium-stabilized austenitic stainless steel known for its high-carbon content and excellent thermal resistance. Proper processing is essential to maintain its superior mechanical properties.
Machinability: Tips for Precision Cutting
While 347H stainless steel machinability is slightly more demanding than Grade 304, high-quality results are easily achievable with the right parameters.
To manage the alloy’s toughness and prevent work-hardening, use constant positive feeds and reduced cutting speeds.
Ensure rigid setups and sharp tooling to maintain dimensional accuracy and surface finish.
Welding Procedures for 347H
Grade 347H offers excellent weldability and can be joined using most standard fusion and resistance welding techniques.
Pro Tip: Oxyacetylene welding is not recommended for this grade due to the risk of carbon pickup.
Because it is stabilized with Columbium (Niobium), it resists intergranular corrosion in the as-welded condition, making it ideal for high-temperature service.
Hot Working and Forging
For heavy-duty shaping, 347H responds well to forging, upsetting, and other hot-work processes at temperatures between 1149°C and 1232°C (2100°F to 2250°F).
To restore maximum corrosion resistance and material stability, components should be water quenched and annealed immediately following hot deformation.
Cold Working and Formability
Despite its high strength, 347H is remarkably tough and ductile. It can be readily processed through:
Stamping and Blanking
Spinning
Deep Drawing Its high work-hardening rate means more power may be required compared to standard carbon steels, but it allows for the creation of complex, high-strength shapes.
Annealing and Heat Treatment
The standard annealing temperature for 347H stainless steel ranges from 1010°C to 1193°C (1850°F to 2000°F).
A rapid water quench follows the heating cycle to ensure maximum solution of carbides. This process relieves internal stresses and optimizes the alloy’s ductility for further processing.
Hardening Limitations
Like most austenitic grades, 347H cannot be hardened by heat treatment. If your application requires increased hardness and tensile strength, this must be achieved through cold working (strain hardening). This process increases the material’s durability while maintaining its stabilized chemical properties.
How to Purchase 347H Stainless Steel Strip Coil
When purchasing strips, 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, 347H
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.
347H Stainless Steel Strips Coils Standards Comparison Table
| STANDARD | SS 347H |
| WERKSTOFF NR. | 1.4961 |
| UNS | S34709 |
| JIS | SUS 347H |
| BS | / |
| KS | / |
| AFNOR | / |
| EN | / |
347H Stainless Steel Strips Coils Packaging
- Standard export packaging:
Waterproof Paper Winding+PVC Film+Strap Banding+Wooden Pallet or Wooden Case; - Customized packaging as your request (Logo or other contents accepted to be printed on the packaging);
- Other special packaging will be designed as customer’s request;
- Eye to wall and eye to sky are both available;
- By International Express: DHL/UPS/FEDEX/EMS and our own express line;
- By air or By sea;
- Shipping port: Shanghai, Ningbo or as your request.
Looking For A Trust 347H Stainless Steel Strip Coil Manufacturer？
Contact us today and we’ll put together a quote tailored to your needs.
