Stainless Steel 347 Hexagon Rods
Rose Metal Industries is a trusted manufacturer, stockist and global exporter of Stainless Steel 347 Hexagon Rods, offering high-grade stainless steel products to clients across India and worldwide. SS 347 is stabilized with niobium, which gives it enhanced resistance to intergranular corrosion and high-temperature degradation — making these hexagon rods suitable for demanding industrial environments.
We supply SS 347 Hexagon Rods to prominent industrial and fabrication regions including Tamil Nadu, Andhra Pradesh, Karnataka, Telangana, Puducherry (Pondicherry), and the Andaman & Nicobar Islands. These locations often demand materials that can endure coastal humidity, salt-laden air, and heavy industrial usage. Our SS 347 rods deliver consistent performance under such challenging conditions
Manufactured using advanced processes and rigorous quality controls, our Stainless Steel 347 Hexagon Rods meet international standards such as ASTM, ASME, EN, DIN, and ISO. They exhibit excellent high-temperature mechanical strength, oxidation resistance, and stability even under cyclic loading. This makes them ideal for furnace parts, heat exchangers, chemical processing equipment, exhaust components, and heavy structural applications.
Rose Metal Industries maintains a robust stock of SS 347 Hexagon Rods in various sizes and finishes, along with custom cut-to-length and packaging services. With our efficient distribution network, we can deliver promptly to industrial centres such as Chennai, Bengaluru, Hyderabad, Coimbatore, Visakhapatnam, Mysuru, Tirupati, and Port Blair. We also support tailored orders to meet project-specific demands.
Specifications & Standards
| Property | Details |
|---|---|
| Grade | Stainless Steel 347 |
| Standards | ASTM A276 / A479, EN, DIN, ASME |
| Form | Hexagon Rods / Bars |
| Size Range | 10 mm across flats to 200 mm (other sizes on request) |
| Finish | Bright, Black, Peeled & Turned, Polished (on request) |
| Testing & Certification | MTC 3.1 / 3.2, PMI, Mechanical & Chemical Test Reports, Third‑party inspection (on demand) |
Chemical Composition (typical for SS 347)
| Element | % (max / range) |
|---|---|
| Carbon (C) | ≤ 0.08 |
| Chromium (Cr) | 17.0 – 19.0 |
| Nickel (Ni) | 9.0 – 13.0 |
| Manganese (Mn) | ≤ 2.00 |
| Silicon (Si) | ≤ 1.00 |
| Niobium (Nb) | 10×C to 1.0 max |
| Phosphorus (P) | ≤ 0.045 |
| Sulfur (S) | ≤ 0.030 |
Mechanical Properties (typical values)
| Property | Value | Condition / Notes |
|---|---|---|
| Tensile Strength (UTS) | ≥ 515 MPa | Annealed condition |
| Yield Strength (0.2% offset) | ≥ 205 MPa | Annealed |
| Elongation | ≥ 40% | Good ductility |
| Hardness | Max 95 HRB | Annealed |
Equivalent Grades / Designations
| Standard Type | Equivalent Grade / Name |
|---|---|
| UNS | S34700 |
| EN / DIN | 1.4550 / X6CrNiNb18‑10 |
| BS | 347S31 |
| Other Standards | Available on request |
Dimension Chart — Hexagon Rods
| Across Flats (mm) | Typical Length (mm) | Tolerance |
|---|---|---|
| 10 | 1000 – 3000 | ±0.5 mm |
| 20 | 1000 – 3000 | ±0.5 mm |
| 30 | 2000 – 4000 | ±0.8 mm |
| 50 | 2000 – 6000 | ±1.0 mm |
| 80 | 3000 – 6000 | Custom on request |
| Custom Sizes | As per customer requirement | On request |
Applications of Stainless Steel 347 Hexagon Rods
- Furnace components & high-temperature structural parts
- Heat exchangers, refinery & petrochemical equipment
- Chemical processing machinery & pressure piping
- Exhaust systems, aerospace parts, and high-temp assemblies
- Marine & coastal structural applications — especially for coastal regions like Tamil Nadu, Puducherry, Andhra Pradesh, Visakhapatnam, and Andaman Islands
- Food processing, pharmaceutical and heavy industrial fabrication equipment
Thanks to their superior weldability, toughness, and corrosion resistance, SS 347 Hexagon Rods are widely used across petrochemical plants, marine engineering, food and pharmaceutical machinery, and structural frameworks. Coastal and marine regions — including Chennai, Puducherry, Visakhapatnam, and the Andaman Islands — benefit particularly from the material’s resilience against chloride attack, salt spray, and high humidity..
With a commitment to quality, export compliance, and customer satisfaction, Rose Metal Industries continues to supply high-grade SS 347 Hexagon Rods to global markets including Middle East, Europe, Africa, Southeast Asia, and more. Our standardized quality assurance, readiness of stock, and ability to fulfil bulk orders make us a preferred supplier of stainless steel bars and rods worldwide.
Frequently Asked Questions (FAQ)
Q1: What advantages does SS 347 have over SS 304 / SS 316?
A: SS 347 is niobium‑stabilized stainless steel. The stabilization prevents carbide precipitation during welding or high‑temperature exposure, giving better resistance to intergranular corrosion and maintaining strength at elevated temperatures compared to regular SS 304 or SS 316.
Q2: Do you supply SS 347 Hexagon Rods across South India and islands?
A: Yes — we supply widely across Tamil Nadu, Andhra Pradesh, Karnataka, Telangana, Puducherry (Pondicherry), and the Andaman & Nicobar Islands with ready stock and efficient logistics.
Q3: Are custom sizes, lengths and finishes possible?
A: Yes — we provide custom sizes, cut‑to‑length rods, polished or peeled finishes, and special tolerance requirements per customer specification.
Q4: Do you provide mill test certificates (MTC) and third‑party inspection?
A: Yes — we supply standard MTC (3.1 / 3.2), chemical & mechanical test reports and can arrange third‑party inspection if required.
Q5: Which industries benefit most from SS 347 Hexagon Rods?
A: SS 347 Hexagon Rods are ideal for industries such as petrochemical, marine engineering, chemical processing, aerospace, food & pharmaceutical, and structural engineering — especially where high temperature resistance, corrosion resistance, and long-term durability are critical.