Stainless Steel 321 Flat Bars
Rose Metal Industries is a reputed manufacturer, stockist and global exporter of Stainless Steel 321 Flat Bars, offering superior-quality high-temperature resistant stainless steel products. SS 321, stabilized with titanium, is widely preferred for structural and fabrication applications where excellent resistance to intergranular corrosion and thermal stability up to 900°C is required. Our flat bars are engineered for precision, durability and long service life in aggressive working environments.
We supply SS 321 Flat Bars to industrial hubs across Tamil Nadu (Chennai, Coimbatore), Andhra Pradesh (Visakhapatnam, Vijayawada), Karnataka (Bengaluru, Mysuru), Telangana (Hyderabad), Puducherry (Pondicherry) and the Andaman & Nicobar Islands. These regions demand materials that can withstand marine corrosion, humidity and fluctuating temperatures—making SS 321 the ideal choice for coastal and high-temperature conditions
With our strong manufacturing capability, Rose Metal Industries ensures consistent quality, precise tolerances and international packaging standards. Our SS 321 Flat Bars are supplied to chemical plants, refineries, marine engineering companies, fabrication units, boiler manufacturers and structural industries worldwide. As a globally trusted exporter, we ship to the Middle East, Europe, Africa, South Asia and American markets.
The titanium-stabilized composition of SS 321 provides enhanced resistance to carbide precipitation during welding, making it superior to SS 304 in applications involving continuous heating cycles. This stability enables our flat bars to perform exceptionally well in heat exchangers, furnace parts, pressure vessels, and refinery components.
Specifications & Standards
| Property | Details |
|---|---|
| Grade | Stainless Steel 321 (AISI 321 / EN 1.4541 / UNS S32100) |
| Standards | ASTM A276, ASTM A479, ASTM A240, EN 10088 |
| Forms | Flat Bar, Cut-to-length Bars, Custom Machined Flats |
| Surface Finish | Hot Rolled, Pickled, Polished, Black Finish |
| Testing | MTC 3.1, PMI, Hardness, Mechanical, Chemical Testing |
Chemical Composition
| Element | SS 321 (%) |
|---|---|
| C | ≤ 0.08 |
| Mn | ≤ 2.00 |
| Si | ≤ 1.00 |
| P | ≤ 0.045 |
| S | ≤ 0.03 |
| Cr | 17.0 – 19.0 |
| Ni | 9.0 – 12.0 |
| Ti | 5 × C min – 0.70 max |
Mechanical Properties
| Property | Value | Notes |
|---|---|---|
| Tensile Strength | ≥ 515 MPa | High temp strength |
| Yield Strength | ≥ 205 MPa | Annealed |
| Elongation | ≥ 40% | High ductility |
| Hardness | ≤ HRB 92 | Annealed |
Equivalent Grades
| Standard | Grade |
|---|---|
| AISI | 321 |
| EN | 1.4541 |
| UNS | S32100 |
| DIN | X6CrNiTi18-10 |
Dimension Chart (Flat Bars)
| Width (mm) | Thickness (mm) | Length (mm) | Tolerance |
|---|---|---|---|
| 20 – 50 | 3 – 10 | 2000 – 6000 | ASTM A484 |
| 60 – 120 | 5 – 12 | 2000 – 6000 | Custom |
| 125 – 200 | 6 – 20 | 3000 – 6000 | Custom |
| Custom Sizes | As Required | Cut-to-Length | Request |
Applications
- Furnace and thermal equipment structures
- Heat exchangers and refinery components
- Boiler plates, pressure vessels & petrochemical equipment
- Marine and coastal structural applications
- Fabrication, machining & support frames
- Industrial platforms in Tamil Nadu, Karnataka, Telangana & Andaman coastal regions
We supply Stainless Steel 321 Flat Bars across major industrial regions such as Tamil Nadu, Andhra Pradesh, Karnataka, Telangana, Puducherry (Pondicherry), and the Andaman & Nicobar Islands, where industries demand materials with exceptional thermal stability and corrosion resistance. Whether it is chemical processing, oil refineries, power generation, or structural engineering, our SS 321 Flat Bars ensure reliability even under extreme operating conditions..
Rose Metal Industries is a trusted manufacturer, stockist, and global exporter of Stainless Steel 321 Flat Bars, supplying premium-quality products to both domestic and international markets. Our SS 321 Flat Bars are engineered to deliver outstanding strength, durability, and performance in high-temperature environments. The addition of titanium in Grade 321 enhances its resistance to carbide precipitation, making it ideal for applications that require long-term service at elevated temperatures..
Frequently Asked Questions (FAQ)
Q1: Why choose Stainless Steel 321 Flat Bars over 304?
A: SS 321 is titanium stabilized and offers superior resistance to carbide precipitation at high temperatures, making it ideal for continuous heat exposure unlike SS 304.
Q2: Do you supply SS 321 Flat Bars to South Indian states?
A: Yes, we supply extensively to Tamil Nadu, Andhra Pradesh, Karnataka, Telangana, Puducherry and Andaman & Nicobar Islands.
Q3: Do you provide test certificates?
A: Yes, MTC 3.1, PMI reports, chemical & mechanical test reports are provided.
Q4: Are custom flat bar sizes available?
A: Yes, we offer customized widths, thicknesses, tolerances and cut-to-length supply.
Q5: Is SS 321 good for coastal environments?
A: Yes, it performs well in marine regions like Chennai, Visakhapatnam, Mangalore and Port Blair due to its strong corrosion and temperature resistance.