321 Stainless Steel Forged Fittings 347 Stainless Steel Forged Fittings
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Product Description:
Stainless steel 321 and 347 forged fittings are essential components in piping systems, known for their exceptional resistance to oxidation, intergranular corrosion, and high-temperature stability. Both grades are stabilized austenitic stainless steels that prevent carbide precipitation during welding, making them ideal for challenging applications in the chemical, petrochemical, and high-temperature environments.
Key Features
321 Stainless Steel Forged Fittings
- High Resistance to Oxidation: Ideal for continuous use in temperatures up to 870°C.
- Stabilized Structure: Titanium addition prevents carbide precipitation, improving weldability.
- Good Mechanical Strength: Provides durability and resistance to deformation under stress.
347 Stainless Steel Forged Fittings
- Superior High-Temperature Strength: Performs well in temperatures up to 900°C.
- Enhanced Resistance: Excellent in oxidizing environments and against intergranular corrosion.
- Weldability and Fabrication: Easily fabricated and welded without loss of corrosion resistance.
Specifications
| Element | 321 Stainless Steel (%) | 347 Stainless Steel (%) |
|---|---|---|
| Carbon (C) | 0.08 Max | 0.08 Max |
| Chromium (Cr) | 17.0–19.0 | 17.0–19.0 |
| Nickel (Ni) | 9.0–12.0 | 9.0–13.0 |
| Titanium (Ti) | 5 x (C + N) Min | — |
| Niobium (Nb) | — | 10 x (C + N) Min |
| Manganese (Mn) | 2.0 Max | 2.0 Max |
Chemical Composition
| Element | 321 Stainless Steel (%) | 347 Stainless Steel (%) |
|---|---|---|
| Carbon (C) | 0.08 Max | 0.08 Max |
| Chromium (Cr) | 17.0–19.0 | 17.0–19.0 |
| Nickel (Ni) | 9.0–12.0 | 9.0–13.0 |
| Titanium (Ti) | 5 x (C + N) Min | — |
| Niobium (Nb) | — | 10 x (C + N) Min |
| Manganese (Mn) | 2.0 Max | 2.0 Max |
Mechanical Properties
| Property | 321 Stainless Steel | 347 Stainless Steel |
|---|---|---|
| Tensile Strength (MPa) | 515 Min | 515 Min |
| Yield Strength (MPa) | 205 Min | 205 Min |
| Elongation (%) | 40 Min | 40 Min |
| Density (g/cm³) | 8.0 | 8.0 |
Applications
321 Stainless Steel Forged Fittings
- Heat exchangers
- Expansion joints
- Chemical and pharmaceutical equipment
- High-temperature ducts
347 Stainless Steel Forged Fittings
- Power generation boilers
- Superheater tubes
- Aerospace applications
- Petrochemical refineries
Advantages
- High-Temperature Performance: Both grades maintain structural stability and resist scaling in high-temperature environments.
- Corrosion Resistance: Stabilized structures provide excellent resistance to intergranular corrosion.
- Durable and Long-Lasting: Superior mechanical properties ensure a longer service life.
- Versatility: Suitable for various industries, including chemical, petrochemical, and aerospace sectors.
Conclusion
321 and 347 stainless steel forged fittings are engineered to deliver optimal performance in demanding conditions. Their resistance to corrosion, high-temperature stability, and exceptional mechanical properties make them a reliable choice for critical industrial applications.
Contact us today to explore our range of stainless steel forged fittings tailored to your project needs!
