Stainless Steel 321 Bolts are robust fastening components crafted for situations that demand outstanding corrosion resistance, durability under high temperatures, and long-lasting reliability. Thanks to their titanium stabilization, these bolts are resistant to intergranular corrosion, making them perfect for use in boilers, heat exchangers, pressure vessels, and industrial piping systems that face extreme temperatures and harsh chemical conditions.
The makeup of Stainless Steel 321 Bolts includes iron, chromium, nickel, and titanium. Chromium offers corrosion resistance, while nickel boosts toughness and ductility. Titanium plays a crucial role in stabilizing the microstructure, ensuring that the bolts maintain their mechanical integrity even at elevated temperatures. With their impressive tensile strength, thermal stability, and resistance to creep, these bolts are well-suited for high-stress and high-temperature 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.
All the required documentation, which are commercial invoice, packaging list, heat treatment chart, and quality assurance plan are given with Our Stainless Steel 321 Bolts. Furthermore, NABL-approved lab test reports, MTC, PMI Test Certificates, radiography test reports, and Third-Party Inspection Certificates also accompany to guarantee international standards for quality and satisfaction of our valued customers.
You’ll find Stainless Steel 321 Bolts in a variety of settings, including power plants, petrochemical industries, chemical processing equipment, and high-temperature industrial pipelines. Their unique blend of mechanical strength, corrosion resistance, and heat tolerance guarantees secure and enduring fastening. In critical industrial, structural, and engineering projects, Stainless Steel 321 Bolts deliver durable, cost-effective, and reliable solutions.
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