Stainless Steel 321, 347, 310 Round Bars
Stainless Steel 321, 347, and 310 round bars are premium-grade alloys renowned for their exceptional performance in high-temperature and corrosion-resistant applications. These austenitic stainless steels are tailored to meet the demanding needs of industries such as aerospace, petrochemical, power generation, and chemical processing.
Stainless Steel 321 Round Bars
Stainless Steel 321 is stabilized with titanium, offering excellent resistance to intergranular corrosion and high-temperature oxidation. It is ideal for applications that involve welding or exposure to extreme heat.
Key Features of Stainless Steel 321
- High Oxidation Resistance: Performs reliably in temperatures up to 870°C (1598°F).
- Corrosion Resistance: Protects against intergranular corrosion and various chemical environments.
- Enhanced Weldability: Titanium stabilization prevents carbide precipitation during welding.
- Formability: Easily fabricated into complex shapes.
Applications of Stainless Steel 321 Round Bars
- Aerospace components
- Exhaust manifolds
- Heat exchangers
- Chemical process equipment
- Food and beverage equipment
Chemical Composition of Stainless Steel 321
|
Element |
Percentage |
|
Chromium (Cr) |
17.0–19.0 |
|
Nickel (Ni) |
9.0–12.0 |
|
Titanium (Ti) |
5x(C+N) – 0.70 |
|
Carbon (C) |
0.08 (maximum) |
|
Manganese (Mn) |
2.0 (maximum) |
|
Silicon (Si) |
1.0 (maximum) |
|
Phosphorus (P) |
0.045 (maximum) |
|
Sulfur (S) |
0.03 (maximum) |
Stainless Steel 347 Round Bars
Stainless Steel 347 is a niobium-stabilized austenitic stainless steel offering excellent high-temperature creep strength and resistance to intergranular corrosion. It is particularly useful in applications requiring frequent thermal cycling.
Key Features of Stainless Steel 347
- High-Temperature Strength: Performs well in prolonged exposure to high temperatures up to 870°C (1598°F).
- Stabilization: Niobium stabilization prevents sensitization and carbide precipitation.
- Corrosion Resistance: Excellent resistance to oxidation and corrosive environments.
- Improved Toughness: Retains strength and flexibility under stress.
Applications of Stainless Steel 347 Round Bars
- Heat exchangers
- Pressure vessels
- Furnace parts
- Aerospace components
- High-temperature chemical processing
Chemical Composition of Stainless Steel 347
|
Element |
Percentage |
|
Chromium (Cr) |
17.0–19.0 |
|
Nickel (Ni) |
9.0–13.0 |
|
Niobium (Nb) |
10x(C+N) – 1.00 |
|
Carbon (C) |
0.08 (maximum) |
|
Manganese (Mn) |
2.0 (maximum) |
|
Silicon (Si) |
1.0 (maximum) |
|
Phosphorus (P) |
0.045 (maximum) |
|
Sulfur (S) |
0.03 (maximum) |
Stainless Steel 310 Round Bars
Stainless Steel 310 is a high-alloyed stainless steel designed for extreme heat and oxidation resistance. Its high chromium and nickel content provide excellent resistance to carburizing and reducing environments.
Key Features of Stainless Steel 310
- High-Temperature Stability: Reliable performance in temperatures up to 1100°C (2012°F).
- Oxidation Resistance: Excellent resistance to oxidizing environments, even in cyclic conditions.
- Corrosion Resistance: Effective in both carburizing and mildly reducing environments.
- Durability: High tensile strength and creep resistance.
Applications of Stainless Steel 310 Round Bars
- Furnace parts
- Heat treatment equipment
- Power plant components
- Cryogenic structures
- Petrochemical refineries
Chemical Composition of Stainless Steel 310
|
Element |
Percentage |
|
Chromium (Cr) |
24.0–26.0 |
|
Nickel (Ni) |
19.0–22.0 |
|
Carbon (C) |
0.25 (maximum) |
|
Manganese (Mn) |
2.0 (maximum) |
|
Silicon (Si) |
1.5 (maximum) |
|
Phosphorus (P) |
0.045 (maximum) |
|
Sulfur (S) |
0.03 (maximum) |
Mechanical Properties
|
Property |
SS 321 |
SS 347 |
SS 310 |
|
Tensile Strength (MPa) |
515 |
515 |
515 |
|
Yield Strength (MPa) |
205 |
205 |
205 |
|
Elongation (%) |
40 |
40 |
40 |
|
Hardness (HRB) |
95 |
95 |
95 |
Available Forms
- Round Bars: Various diameters and lengths for structural and machining applications.
- Square Bars: Precision engineering and machining projects.
- Flat Bars: Ideal for structural and mechanical applications.
- Hex Bars: Used in fasteners and precision tooling.
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