Stainless Steel 347 Flat Bars
Rose Metal Industries is a leading Manufacturer, Stockist and Global Exporter of Stainless Steel 347 Flat Bars, supplying premium-quality products across Tamilnadu, Andhra Pradesh, Karnataka, Telangana, Puducherry (Pondicherry) and the Andaman & Nicobar Islands. Our SS 347 Flat Bars are produced using stabilized chromium-nickel stainless steel with excellent resistance to intergranular corrosion, making them suitable for high-temperature and pressure applications.
We manufacture SS 347 Flat Bars in various sizes, thicknesses and finishes to meet international standards and project requirements. These flat bars are widely used in petrochemical plants, refineries, marine environments, fabrication works, structural components and heat-resistant equipment. With a strong presence in South India and a robust global export network, Rose Metal Industries is known for delivering materials that meet ASTM, ASME and EN standards.
Stainless Steel 347 Flat Bars offer superior mechanical strength, excellent weldability and stability even in environments where carbide precipitation typically occurs. This makes SS 347 a preferred choice for industries located in coastal regions such as Chennai, Mangaluru, Puducherry and Port Blair, where corrosion resistance is critical. Our products undergo strict quality checks including PMI testing, mechanical testing and third-party inspection.
We ensure timely delivery to major South Indian industrial hubs including Chennai, Coimbatore, Bengaluru, Hyderabad, Visakhapatnam, Vijayawada, Mysuru and Puducherry. Additionally, we export SS 347 Flat Bars to global markets such as the Middle East, Europe, Africa, and Southeast Asia. Custom sizes, cut lengths, polishing and tailored packaging are available for bulk and project-based requirements.
✔ Specifications of Stainless Steel 347 Flat Bars
| Standard | ASTM A276, A479 / ASME SA276, SA479 |
|---|---|
| Grade | Stainless Steel 347 / 347H |
| Size Range | 3mm to 150mm thickness |
| Finish | Hot Rolled, Cold Drawn, Polished, Bright |
| Form | Flat Bars, Rectangular Bars, Custom Cut Lengths |
✔ Chemical Composition
| Element | Percentage (%) |
|---|---|
| Carbon (C) | 0.08 max |
| Nickel (Ni) | 9.0 – 13.0 |
| Chromium (Cr) | 17.0 – 20.0 |
| Niobium (Nb) | 10 × C – 1.10 max |
| Manganese (Mn) | 2.00 max |
| Silicon (Si) | 1.00 max |
| Phosphorus (P) | 0.045 max |
| Sulfur (S) | 0.030 max |
✔ Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | 515 MPa (min) |
| Yield Strength | 205 MPa (min) |
| Elongation | 40% (min) |
| Hardness | 217 HB max |
✔ Equivalent Grades
| STANDARD | GRADE |
|---|---|
| UNS | S34700 / S34709 |
| WERKSTOFF NR. | 1.4550 / 1.4961 |
| EN | X6CrNiNb18-10 |
| JIS | SUS 347 |
✔ Dimension Chart (General)
| Thickness (mm) | Width (mm) |
|---|---|
| 3 – 12 | 20 – 100 |
| 12 – 25 | 25 – 150 |
| 25 – 75 | 50 – 200 |
✔ Applications of SS 347 Flat Bars
- Heat Exchangers & Boiler Equipment
- Petrochemical & Refinery Structures
- Food & Pharmaceutical Processing Equipment
- Fabrication, Construction & Architectural Projects
- Marine & Coastal Applications (ideal for South India regions)
- High-Temperature Structural Components
At Rose Metal Industries, our commitment to quality, competitive pricing and customer satisfaction has made us a trusted supplier of Stainless Steel 347 Flat Bars for sectors including construction, oil & gas, power generation, chemical processing, pharmaceuticals, food equipment manufacturing and high-temperature structural applications worldwide.
Our SS 347 Flat Bars are engineered using niobium-stabilized stainless steel, offering exceptional resistance to intergranular corrosion, welding carbide precipitation and high-temperature oxidation, making them the preferred choice for refineries, power plants, heat exchangers, pressure vessels, marine structures, petrochemical equipment and heavy fabrication works..
Frequently Asked Questions (FAQ)
Q1: What makes Stainless Steel 347 Flat Bars suitable for high-temperature applications?
A: SS 347 contains niobium, which stabilizes the material and prevents carbide precipitation at elevated temperatures, making it ideal for heat-exposed structures in Tamilnadu, Karnataka, Telangana and global industrial sectors.
Q2: Do you provide MTC and third-party inspection for SS 347 Flat Bars?
A: Yes. Rose Metal Industries supplies MTC (EN 10204 3.1), PMI reports and third-party inspection for projects across Andhra Pradesh, Puducherry and the Andaman & Nicobar Islands.
Q3: What are the available finishes for SS 347 Flat Bars?
A: We offer Hot Rolled, Cold Drawn, Polished, Bright and Custom Surface Finishes suitable for architectural and engineering applications.
Q4: Can you export Stainless Steel 347 Flat Bars worldwide?
A: Yes. We deliver globally to the Middle East, Europe, Africa, Singapore, Malaysia and other international destinations.
Q5: Do you offer customized cut lengths?
A: Yes. We provide cut-to-size SS 347 Flat Bars for fabrication and structural projects throughout South India and global markets.