SS 321 Stainless Steel
Round Bars Manufacturer
At Steel Icon Stainless Pvt. Ltd., we are a trusted manufacturer and exporter of SS 321 Stainless Steel Round Bars, delivering superior solutions for high-temperature and corrosive service environments. SS 321 is a titanium-stabilised austenitic stainless steel that offers excellent resistance to intergranular corrosion after exposure to temperatures in the chromium carbide precipitation range (427°C – 816°C).
Our SS 321 round bars are manufactured according to ASTM, ASME, DIN, and EN standards, widely used in thermal processing, chemical industries, aerospace, petrochemical, and power plants.
| Products |
|---|
|
Stainless Steel Bar |
|
Fasteners |
|
Forged Products |
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Flanges |
|
Forged Fittings |
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Stainless Steel Billets |
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Round Corner Square Billets |
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Stainless Steel Pipes |
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Pipe Fittings |
|
Valve |
Specifications
| Property | Specification |
|---|---|
|
Material Grade |
SS 321
|
|
Size Range |
5mm to 500mm
|
|
Length |
Up to 6 meters (Custom cut lengths available) |
|
Shapes & Types |
Bright, Black, Polished, Peeled, Centerless Ground
|
|
Manufacturing Process
|
Hot Rolled, Cold Drawn, Peeled & Polished |
|
Standards |
ASTM A276, ASTM A479, ASME SA276, EN 10088 |
Chemical Composition
| Element | SS 321 (%) |
|---|---|
|
Carbon (C) |
0.08 max |
|
Chromium (Cr)
|
17.0–19.0
|
|
Nickel (Ni) |
9.0–12.0 |
|
Titanium (Ti)
|
≥ 5x%C |
|
Manganese (Mn) |
2.00 max |
|
Silicon (Si) |
1.00 max |
Mechanical Properties
| Property | SS 321 |
|---|---|
|
Tensile Strength |
515 – 750 MPa |
|
Yield Strength |
205 MPa min |
|
Elongation (%) |
≥ 40% |
|
Hardness (HRB) |
≤ 95 |
Types of Finishes Available
- Hot Rolled Round Bars
- Cold Drawn Round Bars
- Polished Round Bars
- Peeled & Centerless Ground Bars
Applications
- Aircraft Exhaust Systems – Tubes, manifolds, and combustion chambers
- Chemical Processing Equipment – Tanks, pipes, and heat exchangers
- High-Temperature Gaskets – Flanges and piping components
- Thermal Processing Equipment – Heat treatment fixtures and oven parts
- Power Plants – Boiler tubes, superheaters, and expansion joints
Key Benefits
- Excellent resistance to intergranular corrosion
- Superior performance at high temperatures
- Stabilized against chromium carbide formation
- Good mechanical strength and weldability
- Resists oxidation up to 870°C (1600°F)
Frequently Asked Questions
Explore our FAQs for insights on materials, customization, and delivery.
What makes SS 321 different from SS 304?
SS 321 contains titanium, which stabilizes the material and prevents sensitization and intergranular corrosion at high temperatures.
Is SS 321 good for welding?
Yes, it exhibits excellent weldability with or without filler metals.
Can SS 321 replace SS 316 for high-temperature applications?
SS 321 is better suited for sustained high-temperature service, whereas SS 316 is more resistant to chlorides.
Do you provide third-party inspections for SS 321 round bars?
Yes, we offer third-party inspection (TPI) as per client requirements.
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