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High-Quality 321 Stainless Steel Bars from China Suppliers | Reliable Factory for High-Temperature Applications
Product Details
Here's the scoop on what makes our 321 stainless steel bars stand out:
- Titanium stabilization prevents carbide buildup during welding—pretty important for weld integrity.
- They resist intergranular corrosion like a champ.
- Capable of handling oxidation and creep, even over long periods.
- Keep their strength at high temperatures impressively well.
- Plus, they're easy to machine and form into whatever shape you need.
We offer these bars in round, square, and hex shapes, with different surface finishes—hot rolled, cold finished, turned, or centerless ground—whatever your project calls for. Each one is precisely made to meet ASTM A276 and ASME SA479 standards, so you know you're getting consistent quality that performs reliably in critical jobs.
⚡ Common Applications: Aircraft exhaust systems, heat exchangers, boiler parts, industrial furnace components, chemical processing equipment, and thermal processing components. If your project demands high heat resistance combined with solid corrosion protection, our 321 Stainless Steel Bars are a great choice.
📞 Get in Touch: Feel free to reach out today for more tech specs or to get a quote on standard or custom sizes. We're here to help you find the perfect fit!
| Austenitic Stainless Steel | 201, 301, 304, 305, 310, 314, 316, 321, 347, 370, etc |
| Martensitic Stainless Steel | 410, 414, 416, 416, 420, 431, 440A, 440B, 440C, etc |
| Duplex Stainless Steel | S31803, S32101, S32205, S32304, S32750, etc |
| Ferritic Stainless Steel | 429, 430, 433, 434, 435, 436, 439, etc |
Product Specification
| Material | 304, 304L, 309S, 310S, 316, 316L, 316Ti, 317, 317L, 321, 347H, 201, 202, 405, 409, 410, 420, 430, etc |
| Type | Round, square, hexagonal, flat, angle |
| Surface | Pickled, Black, Bright, Polishing, Blasting, etc |
| Specifications |
Round Bar：Diameter: 3mm ~ 800mm Angle Bar Size: 3mm×20mm×20mm ~ 12mm×100mm×100mm Square Bar Size: 4mm×4mm ~ 100mm×100mm Flat Bar Thickness: 2mm ~ 100mm, Width: 10mm ~ 500mm Hexagonal Size: 2mm ~ 100mm |
| MOQ | 1 Ton |
| Length | 6m, 5.8m, 3m or as required |
| Price Term | EX-Work, FOB, CFR, CIF, CNF |
| Payment Term | T/T, L/C, Western Union |
| Market | Europe, South America, Africa, Oceania — such as: Chile, Spain, USA, Germany, India, Dubai, Iraq, Vietnam, Ireland, Korea, Singapore, and so on. |
| Package | Bundled, wooden box for export standard package. |
| Delivery Time | Normally according to the order quantity |
Chemical Composition Table
| Chemical Component (%) | |||||||
| Grade ASTM | C | Si | Mn | S | P | Cr | Ni |
| 201 | ≤0.15 | ≤0.75 | 5.50–7.50 | ≤0.030 | ≤0.060 | 16.00–18.00 | 3.50–5.50 |
| 304 | ≤0.07 | ≤1.00 | ≤2.00 | ≤0.030 | ≤0.035 | 17.00–19.00 | 8.00–11.00 |
| 304L | ≤0.03 | ≤1.00 | ≤2.00 | ≤0.030 | ≤0.035 | 18.00–20.00 | 8.00–12.00 |
| 309S | ≤0.08 | ≤1.00 | ≤2.00 | ≤0.030 | ≤0.035 | 22.00–24.00 | 12.00–15.00 |
| 310S | ≤0.08 | ≤1.00 | ≤2.00 | ≤0.030 | ≤0.035 | 24.00–26.00 | 19.00–22.00 |
| 316 | ≤0.08 | ≤1.00 | ≤2.00 | ≤0.030 | ≤0.035 | 16.00–18.00 | 10.00–14.00 |
| 316L | ≤0.08 | ≤1.00 | ≤2.00 | ≤0.030 | ≤0.035 | 16.00–18.00 | 12.00–15.00 |
Frequently Asked Questions
Q What makes 321 stainless steel bars different from standard 304 stainless steel bars?
321 stainless steel contains titanium as a stabilizing element, which prevents carbide precipitation during welding and high-temperature exposure. This makes it significantly more resistant to intergranular corrosion compared to standard 304 stainless steel, especially in applications involving prolonged heat exposure.
Q What surface finishes are available for your 321 stainless steel bars?
We offer multiple surface finishes including hot rolled, cold finished, turned, and centerless ground. Additional options such as pickled, black, bright, polished, and blasted finishes are also available to suit different project requirements.
Q What are the typical applications for 321 stainless steel bars?
321 stainless steel bars are widely used in aircraft exhaust systems, heat exchangers, boiler components, industrial furnace parts, chemical processing equipment, and thermal processing components. Any application requiring high heat resistance combined with reliable corrosion protection is an ideal fit.
Q What standards do your 321 stainless steel bars comply with?
Our 321 stainless steel bars are manufactured to meet ASTM A276 and ASME SA479 standards, ensuring consistent quality, dimensional accuracy, and reliable performance in critical industrial applications.
Q What is the minimum order quantity (MOQ) and what are the available lengths?
The minimum order quantity is 1 ton. Standard lengths available are 6m, 5.8m, and 3m. Custom lengths can also be arranged based on your specific project requirements.
Q What payment terms and shipping options do you offer?
We accept T/T, L/C, and Western Union as payment methods. For shipping, we support EX-Work, FOB, CFR, CIF, and CNF price terms. We serve markets across Europe, South America, Africa, Oceania, and many other regions worldwide.