321 Stainless Steel Powder: High-Temperature Resistant Austenitic Alloy
Overview:
321 stainless steel powder is an austenitic stainless steel alloy stabilized with titanium, designed to resist intergranular corrosion and perform well in high-temperature environments. Its excellent mechanical properties, combined with superior oxidation resistance, make it a preferred material in aerospace, chemical processing, and automotive industries. The spherical powder form ensures optimal flowability and precision for advanced manufacturing techniques.
What is 321 Stainless Steel Powder?
321 is a titanium-stabilized stainless steel alloy that prevents carbide precipitation, making it highly resistant to intergranular corrosion. Its ability to withstand high temperatures and maintain strength makes it ideal for demanding applications in harsh environments.
Composition:
| Element | Content (%) |
|---|---|
| Chromium (Cr) | 17.0-19.0 |
| Nickel (Ni) | 9.0-12.0 |
| Titanium (Ti) | 5x(C+N) to 0.70 |
| Manganese (Mn) | ≤2.00 |
| Silicon (Si) | ≤1.00 |
| Carbon (C) | ≤0.08 |
| Phosphorus (P) | ≤0.045 |
| Sulfur (S) | ≤0.030 |
| Iron (Fe) | Balance |
Features:
High-Temperature Resistance: Performs well in temperatures up to 870°C.
Corrosion Resistance: Excellent resistance to oxidation and intergranular corrosion.
Spherical Powder Form: Ensures superior flowability and uniformity in manufacturing.
Applications:
| Industry | Application |
|---|---|
| Aerospace | Exhaust manifolds and engine components |
| Automotive | Heat exchangers and catalytic converters |
| Chemical Processing | Reactor vessels and piping systems |
Specifications:
| Property | Value |
|---|---|
| Particle Size | Customizable for specific applications |
| Density | ~7.9 g/cm³ |
| Tensile Strength | ~515 MPa |
| Yield Strength | ~205 MPa |
| Elongation | ~40% |
Advantages:
Durability: High strength and resistance to thermal stress.
Stability: Titanium stabilization prevents carbide precipitation.
Versatility: Suitable for various industrial and high-temperature applications.
Limitations:
Cost: Higher material cost due to titanium stabilization.
Machinability: Slightly harder to machine compared to non-stabilized stainless steels.
FAQs:
| Question | Answer |
|---|---|
| What industries use 321 stainless steel powder? | Aerospace, automotive, and chemical processing industries. |
| How does titanium improve 321 stainless steel? | Titanium prevents carbide precipitation, enhancing resistance to intergranular corrosion. |
| Why is the spherical powder form beneficial? | It ensures better flowability, precision, and reduced waste in manufacturing. |