Walid Stainless is a reliable manufacturer and supplier of premium Stainless Steel 321 Bolts in Tunis, Tunisia. Engineered for high-temperature and corrosive environments, our SS 321 bolts provide excellent strength, stability, and oxidation resistance. Titanium stabilization enhances performance by preventing carbide precipitation during welding or prolonged heat exposure. Manufactured using advanced machinery and strict quality standards, Walid Stainless ensures precise threading, superior durability, and consistent quality. Our Stainless Steel 321 bolts are supplied to global industries, supporting secure and long-lasting fastening solutions in demanding applications.
Stainless Steel 321 bolts are austenitic stainless steel fasteners containing chromium and nickel, stabilized with titanium. This composition improves resistance to intergranular corrosion and enhances performance at elevated temperatures. SS 321 offers good tensile strength, excellent toughness, and reliable ductility. It maintains mechanical stability, oxidation resistance, and creep strength under high-temperature and pressure conditions, making it suitable for continuous service in heat-intensive industrial environments.
Material | Specification | Standards | Size | Length |
Stainless Steel 321 Bolts | ASTM, ASME and API | ASTM B 193 / ASME SB 193 | M02 to M30 | 3 mm To 200 mm |
| Element | SS 321 |
| Tensile Strength (MPa) min | 480 |
| Yield Strength 0.2% Proof (MPa) min | 275 |
| Elongation (% in 50mm) min | 16 |
| Rockwell B (HR B) max Hardness | 95 |
| Brinell (HB) max Hardness | 201 |
| Element | SS 321 |
| Ni | 0.75 |
| C | 0.15 |
| Mn | 1.00 max |
| P | 0.04 max |
| S | 0.03 max |
| Si | 1.00 max |
| Cr | 11.5 – 13.5 |
| Mo | – |
| N | – |
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Stainless Steel 321 bolts are high-performance fasteners known for their excellent oxidation and corrosion resistance at elevated temperatures. Ideal for aerospace, chemical processing, and industrial applications, they ensure durability and reliability.
Custom Stainless Steel 321 Hex Bolt is a conformable fastener with a hexagonal head, providing excellent resistance to temperature rise and corrosion, ideal for precision applications in aerospace and industrial applications
Stainless Steel 321 leg bolt features a unique leg design for enhanced stability, providing excellent high-temperature and corrosion resistance. It is ideal for securing components in demanding industrial and aerospace environments.
Stainless Steel 321 expansion anchor bolt is designed for anchoring in concrete or masonry, offering superior high-temperature and corrosion resistance. It expands upon installation, ensuring secure and reliable fastening in harsh conditions.
Stainless Steel 321 hex flange head bolt features a hexagonal head with an integrated flange, providing high-temperature and corrosion resistance. Ideal for secure clamping in industrial and aerospace applications.
Stainless Steel 321 full threaded bolts are high-temperature resistant fasteners with continuous threading. They offer excellent corrosion and oxidation resistance, making them suitable for demanding industrial and aerospace applications.
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Stainless Steel 321 bolts are widely used in applications requiring strength and corrosion resistance at high temperatures. Common industries include aerospace, petrochemical processing, power generation, and chemical manufacturing. These bolts are ideal for exhaust systems, heat exchangers, furnace components, and refinery equipment. SS 321 bolts are also used in pharmaceutical, food processing, and oil and gas industries where thermal stability, cleanliness, and durability are essential. Their long service life and dependable performance make them a preferred choice for critical fastening applications.
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