1 1/2 321 Stainless steel square bar

Product Overview

321 Stainless Steel Square Bar is a stabilized austenitic stainless steel product designed for high-temperature strength, excellent corrosion resistance, and superior dimensional integrity. This material is especially ideal for environments involving repeated thermal cycling or prolonged exposure to elevated temperatures.

It is widely used in the manufacturing of components for aerospace engines, exhaust manifolds, chemical processing plants, and heat exchanger systems. Thanks to its excellent mechanical properties and oxidation resistance, 321 Stainless Steel Square Bar maintains its strength and structure even at temperatures up to 1000°C. We offer standard and custom sizes to meet various project specifications, including the highly popular 1/2 square stainless steel bar variant.

Our inventory includes a full range of sizes in polished, annealed, or brushed finishes, with global shipping supported from our trusted China stainless steel square bar production base.

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Key Specifications

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Available Sizes & Pricing

(Note: 1/2 square stainless steel bar (50x50mm) is in stock and available for immediate dispatch. All China stainless steel square bar inventory supports global export and complies with major quality standards.)

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Key Properties

• 🔥 High-Temperature Resistance: One of the standout features of 321 Stainless Steel Square Bar is its performance at high temperatures. With stability up to 1000°C, it's ideal for furnaces, thermal shields, and boiler systems.

• 🛡️ Corrosion Resistance: The titanium content in 321 steel stabilizes the structure, preventing chromium carbide precipitation. This makes it particularly resistant to intergranular corrosion after welding or heat exposure.

• ⚙️ Mechanical Strength: Known for its excellent fatigue strength, creep resistance, and tensile durability, 321 Stainless Steel Square Bar is perfect for mechanical parts exposed to stress and heat.

• 🔩 Non-Magnetic Nature: Like other austenitic stainless steels, 321 is essentially non-magnetic in the annealed condition, making it suitable for electromagnetic-sensitive environments.

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Manufacturing Process

Our China stainless steel square bar manufacturing facilities employ advanced forming and finishing techniques to guarantee top-grade material.

• Forming: Cold rolling ensures sharp square profiles and precise tolerances, important for structural and mechanical fits.

• Heat Treatment: All bars are solution annealed to enhance corrosion resistance and structural stability.

• Surface Processing: Depending on customer needs, finishes include brushed (for anti-glare applications), polished (for decorative and cleanroom use), or mirror (for high-end architectural features).

We also offer custom chamfering, cutting, and deburring to reduce onsite labor costs.

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Why Choose 321 Stainless Steel Square Bar?

✅ Reliable Supply: We are a leading China stainless steel square bar manufacturer, offering a vast selection of shapes, sizes, and finishes to support large-scale industrial applications.

✅ Ready Stock of 1/2 Square Stainless Steel Bar: Our 50x50mm size, one of the most widely used in structural frameworks and industrial supports, is kept in ready stock for urgent orders.

✅ Custom Fabrication Options: Whether you need a polished surface for architectural use or tight tolerance bars for aerospace components, our 321 Stainless Steel Square Bar can be fabricated to match exact design specifications.

✅ Global Delivery Network: From Asia to Europe and North America, we support seamless shipping logistics to get your materials where and when you need them—fast, safe, and certified.

✅ Industry Applications:

• Aerospace: Components in jet engines and heat shields.

• Industrial Boilers: Support bars, brackets, and mounts exposed to high heat.

• Chemical Processing: Structural elements and frames resistant to oxidizing media.

• Construction: Load-bearing applications and frames where thermal durability is a must.