Welcome to Mbemba Stainless, your trusted partner in Kinshasa for industrial-grade fastening solutions. We take pride in supplying the local market with high-integrity Stainless Steel 321 bolts, engineered to meet the demanding conditions of our region’s growing industries. Our commitment is to provide not just a product, but a reliable component that ensures the safety and longevity of your critical projects, backed by our deep understanding of the specific needs within the Congolese industrial landscape.
The strength of these bolts comes from their unique composition, which includes chromium and nickel for corrosion resistance, along with titanium for enhanced stability. This specific addition allows the bolts to maintain their mechanical strength and resist degradation under high temperatures, making them exceptionally durable. They are designed to perform reliably under stress, offering excellent tensile strength and good ductility, which prevents them from becoming brittle even in challenging thermal cycles.
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 | – |
Contact us to get a quick quote for your requirement.
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 these bolts are indispensable in environments where heat and corrosion are constant challenges. They are a perfect fit for the petrochemical industry, used in refinery piping systems and heat exchangers. They also play a crucial role in power generation plants, aircraft exhaust systems, and high-temperature processing equipment within the food and pharmaceutical sectors. Essentially, any application demanding long-term reliability under thermal stress benefits from the exceptional properties of Stainless Steel 321 bolts.
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