Discover premium SS 321 Coils, Stainless Steel 321 Coils, and 321 Coils from Salem Stainless Steel Suppliers Pvt. Ltd., your trusted supplier in Chennai, Tamil Nadu. As a titanium-stabilized austenitic stainless steel, Type 321 offers superior resistance to intergranular corrosion following exposure to temperatures in the chromium carbide precipitation range.
Our 321 Coils are manufactured in accordance with international standards using premium-grade raw materials to ensure consistent performance and long service life.
Key Features of SS 321 Coils
- Excellent resistance to intergranular corrosion
- Superior performance at elevated temperatures
- Titanium-stabilized austenitic structure
- Outstanding weldability and fabrication properties
- Good toughness and mechanical strength
Compared to SS 304, Stainless Steel 321 Coils can be used at much higher temperatures up to 900°C without loss of structural integrity. These coils are well suited for welded components exposed to continuous or intermittent heat.
| Element | 321 SS Coils (%) |
|---|---|
| Carbon (C) | ≤ 0.08 |
| Manganese (Mn) | ≤ 2.00 |
| Silicon (Si) | ≤ 0.75 / 1.00 |
| Chromium (Cr) | 17.00 – 19.00 |
| Nickel (Ni) | 9.00 – 12.00 |
| Phosphorus (P) | ≤ 0.040 / 0.045 |
| Sulfur (S) | ≤ 0.030 |
| Nitrogen (N) | ≤ 0.10 |
| Titanium (Ti) | ≥ 5x C or 0.70 min (stabilizer) |
Mechanical Properties of Stainless Steel 321 Coils:
| Property | Value (Annealed) |
|---|---|
| Tensile Strength | 515-750 MPa (75-110 ksi) |
| Yield Strength | 205-310 MPa (30-45 ksi) |
| Elongation (in 50mm) | 40% min (in 50mm) |
| Hardness (Rockwell B) | 95 max |
| Density | 8.0 g/cm³ |
Physical Properties of 321 Coils :
| Property | Value (Grade 321) |
|---|---|
| Density | 8027 kg/m³ (7.92-8.0 g/cm³) |
| Elastic Modulus | 193 GPa |
| Thermal Expansion (0-100°C) | 16.6 μm/m/°C |
| Thermal Expansion (0-315°C) | 17.2 μm/m/°C |
| Thermal Expansion (0-538°C) | 18.6 μm/m/°C |
| Thermal Conductivity (100°C) | 16.1 W/m·K |
| Thermal Conductivity (500°C) | 22.2 W/m·K |
| Specific Heat (0-100°C) | 500 J/kg·K |
| Electrical Resistivity | 720 nΩ·m |
Product Specifications:
| Feature | Details |
|---|---|
| Material Grade | Stainless Steel 321 / 321H (UNS S32100) |
| Standards Specifications | ASTM A240, ASME SA240 |
| International Standards | JIS, ASTM, AISI, GB, EN, DIN |
| Processing Method | Cold Rolled (CR), Hot Rolled (HR) |
| Thickness Range | 0.3mm – 100mm |
| Standard Widths | 1000mm,1219mm,1250mm,1500mm,1524mm,2000mm |
| Surface Finish | 2B, BA, No. 4, HL (Hairline), Mirror, etc. |
| Supply Capacity | 500 Tons per Month |
Versatile Industrial Applications of 321 Coils:
As a leading supplier of SS 321 Coils, we provide high-performance solutions for a wide range of demanding sectors:
- Energy & Power:Generator industries, power projects, and gas turbine components
- Processing: Chemical processing equipment and food industry machinery.
- Heavy Industry: Cement plants, shaft manufacturing, and heat exchangers.
- Aerospace:: Exhaust stacks and jet engine parts.
Note: Due to its titanium content, SS 321 does not take a high-mirror polish. We recommend this grade for functional, high-durability industrial use rather than decorative or “enhancing” applications.
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Looking for reliable suppliers of 321 Stainless Steel?
Contact Salem Stainless Steel Suppliers Pvt. Ltd., today for pricing, technical support, or customized requirements. Our experts are ready to assist you.
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