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321 Stainless Steel Tube – Premium Quality from a China Manufacturer
The 321 Stainless Steel Tube is a high-performance, heat-resistant product renowned for its corrosion resistance and stability at elevated temperatures. Produced by expert factories in China, this titanium-stabilized austenitic stainless steel excels in demanding conditions. Whether you need 321 tube, 321 seamless stainless steel pipe, or 321 stainless steel square tubing, it’s a top choice for industries requiring durability and reliability.
Price: Contact Us for a Custom Quote
Interested in the price of 321 Stainless Steel Tube? Pricing varies by size, thickness, and order volume. Contact our team for a tailored quote. As a leading manufacturer in China, we offer competitive rates on 321 ss tubes to meet your project demands.
Specifications
Our 321 Stainless Steel Tube is available in various forms:
- Outer Diameter: 6mm to 630mm (321 ss pipe diameters customizable)
- Wall Thickness: 0.5mm to 50mm (e.g., 321 schedule 40 stainless steel pipe)
- Length: Up to 12 meters or custom-cut (321 Pipe Cutting available)
- Surface Finish: Polished, brushed, or mill finish
- Types: Seamless (321 seamless stainless steel pipe), welded, corrugated (321 corrugated stainless steel tubing)
- Standards: ASTM A269, A312, ASME SA269
Features (Advantages)
- Heat Resistance: Stable up to 900°C, ideal for high-temperature use.
- Corrosion Resistance: Strong in mild and oxidizing environments.
- Durability: Long-lasting for 321 steel tubing applications.
- Fabrication Ease: Supports 321 Tube Bending and welding.
- Versatility: Suits 321 stainless piping or decorative uses.
- Quality Assurance: From trusted 321 stainless steel pipe suppliers in China.
Applications
The 321 Stainless Steel Tube serves diverse industries:
- Aerospace: Exhaust systems and 321 3-inch stainless steel exhaust pipes.
- Chemical Processing: Piping like 321 stainless piping for mild corrosives.
- Oil & Gas: High-temperature lines with ss 321 pipe.
- Construction: Structural 321 stainless steel square tubing and railings.
- Automotive: Heat-resistant 321 metal pipe for manifolds.
Its uses are extensive from 321 steel tubing in refineries to 321 corrugated stainless steel tubing in HVAC.
Chemical Composition
| Element | Percentage (%) |
|---|---|
| Carbon (C) | ≤ 0.08 |
| Chromium (Cr) | 17.0–19.0 |
| Nickel (Ni) | 9.0–12.0 |
| Titanium (Ti) | ≤ 0.70 (5xC min) |
| Manganese (Mn) | ≤ 2.0 |
| Silicon (Si) | ≤ 1.0 |
| Phosphorus (P) | ≤ 0.045 |
| Sulfur (S) | ≤ 0.03 |
| Iron (Fe) | Balance |
Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | 515–690 MPa |
| Yield Strength (0.2%) | ≥ 205 MPa |
| Elongation | ≥ 40% |
| Hardness (Brinell) | ≤ 217 HB |
| Density | 8.0 g/cm³ |
Chemical Properties
The 321 Stainless Steel Tube resists:
- Acids: Good against mild acids like acetic; moderate with strong acids.
- Alkalis: Strong resistance to bases like sodium hydroxide.
- Limitations: Less effective in high chloride environments at elevated temperatures.
Things to Note (Limitations)
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- Chloride Exposure: Susceptible to pitting in saltwater or chloride-rich settings.
- Extreme Corrosion: Less resistant than 316 in harsh chemical conditions.
- Cost: Higher than 304 due to titanium content.
Our China distributor can recommend alternatives if needed.
Corrosion Data
| Environment | Corrosion Resistance | Notes |
|---|---|---|
| Atmospheric (Urban/Rural) | Excellent | Resists rust in typical outdoor conditions. |
| High Temperature (Oxidizing) | Excellent | Stable up to 900°C in oxidizing environments. |
| Mild Chemicals | Good | Handles dilute acids and cleaners effectively. |
| Saltwater (Coastal) | Moderate | Susceptible to pitting with prolonged exposure. |
| Industrial Atmospheres | Good | Resists mild pollutants; monitor heavy exposure. |
Contact us for detailed corrosion resistance data specific to your application.
Welding and Fabrication Tips
Welding 321 Stainless Steel Pipe is efficient:
- TIG Welding: Preferred for precision on 321 seamless stainless steel pipes.
- MIG Welding: Works for thicker 321 schedule 40 stainless steel pipe.
Tips:
- No pre-heating needed; titanium prevents carbide precipitation.
- Use 347 or 321 filler metals for 321 Tube Bending and welding.
- Post-weld annealing isn’t required but can enhance corrosion resistance.
Our 321 Pipe Cutting services streamline fabrication.
Customer Reviews
Frequently Asked Questions
Q: How does 321 ss Tube compare to 304?
A: The 321 Stainless Steel Pipe offers better heat resistance due to titanium, while 304 is more cost-effective for mild conditions.
Q: Can 321 ss pipe sizes be customized?
A: Yes, our 321 stainless steel pipe sizes range from 6mm to 630mm, with 321 Pipe Cutting options – ask our China factory!
Q: Is 321 seamless stainless steel pipe ideal for high heat?
A: Absolutely, 321 seamless stainless steel pipe excels in high-temperature applications like 321 stainless piping.
Q: What’s the lead time from 321 stainless steel pipe suppliers?
A: Lead times for 321 stainless steel pipe suppliers vary, but our China enterprise ensures fast delivery – contact us for specifics!
Q: Can 321 Stainless Steel Tube be used in corrosive heat environments?
A: Yes, 321 Stainless Steel Pipe excels in high-heat, mildly corrosive settings thanks to its titanium stabilization. It’s perfect for 321 steel tubing in exhaust or chemical systems!
Q: What’s the advantage of 321 corrugated stainless steel tubing?
A: 321 corrugated stainless steel tubing offers flexibility and heat resistance, making it ideal for tight spaces or dynamic applications. Our China manufacturer ensures top quality for both!