Walid Stainless, based in Tunis, Tunisia, is a trusted manufacturer and supplier of high-quality stainless steel products. Among their offerings are Stainless Steel 440B Fasteners, engineered for applications requiring high hardness, wear resistance, and moderate corrosion resistance. These fasteners are ideal for industrial, mechanical, and precision assemblies where durability and strength are critical, including tooling, machinery, and high-load equipment. Each fastener is manufactured with precision and undergoes strict quality control to ensure consistent performance. Clients rely on 440B Fasteners from Walid Stainless for secure, long-lasting, and dependable fastening solutions in demanding industrial and mechanical projects.
Stainless Steel 440B Fasteners are made from a high-carbon martensitic stainless steel alloy containing approximately 16–18% chromium and 0.6–0.75% carbon. This composition provides excellent hardness, wear resistance, and moderate corrosion resistance. These fasteners typically exhibit tensile strength between 750–900 MPa and hardness around 58–60 HRC after heat treatment. The martensitic structure ensures mechanical durability, wear resistance, and dimensional stability under heavy loads and mechanical stress. 440B Fasteners are suitable for precision machinery, tooling, industrial, and high-load applications where strength, hardness, and long-term reliability are essential.
| Properties | Metric | Imperial |
|---|---|---|
| Density | 7.74 g/cm3 | 0.280 lb/in³ |
| Melting point | 1482°C | 2700°F |
|
C
|
Si
|
Mn
|
P
|
S
|
N
|
Cr
|
Cu
|
Mo
|
Ni
|
Ti
|
V
|
|---|---|---|---|---|---|---|---|---|---|---|---|
|
0,85 – 0,95
|
–
|
–
|
–
|
–
|
–
|
17,00 – 19,00
|
–
|
0,90 – 1,30
|
–
|
–
|
0,07 – 0,12
|
| Tempering Temperature (°C) | Tensile Strength (MPa) | Yield Strength 0.2% Proof (MPa) | Elongation (% in 50mm) | Hardness Rockwell (HR C) | Impact Charpy V (J) |
|---|---|---|---|---|---|
| Annealed* | 758 | 448 | 14 | 269HB max | – |
| 204 | 2030 | 1900 | 4 | 59 | 9 |
| 260 | 1960 | 1830 | 4 | 57 | 9 |
| 316 | 1860 | 1740 | 4 | 56 | 9 |
| 371 | 1790 | 1660 | 4 | 56 | 9 |
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Highly resistant to corrosion, Stainless Steel 440B Nuts are designed for high-strength applications. Available in sizes ranging from M3 to M24, they are precision-manufactured to ensure reliable performance and durability.
Stainless Steel 440B Stud Bolts offer excellent corrosion resistance and are ideal for demanding environments. Typically available in lengths from 50mm to 500mm and diameters from M6 to M30, they provide robust fastening solutions for various industrial applications.
Stainless Steel 440B Bolts exhibit superior corrosion resistance and are suitable for harsh conditions. They come in sizes from M6 to M30 and lengths ranging from 10mm to 300mm. Their high strength and durability make them ideal for critical applications.
With excellent corrosion resistance, Stainless Steel 440B threaded rods are used in heavy-duty applications. They are available in lengths from 100mm to 2000mm and diameters ranging from M6 to M30, offering versatility and strength in fastening solutions.
Stainless Steel 440B screws provide high corrosion resistance and are used in various applications. Sizes range from M3 to M20, with 10mm to 150mm lengths. They are known for their strength and reliability in tough environments.
Stainless Steel 440B washers offer exceptional corrosion resistance, crucial for distributing loads and reducing friction. They are available in sizes from M3 to M30, with standard thicknesses that ensure durability and performance in high-stress applications.
Here at Walid Stainless, Tunis, Tunisia, our primary concern is a faultless customer experience by providing comprehensive documentation for our premium Stainless Steel 440B Fasteners. This includes all the necessary documents like commercial invoice, packaging list, heat treatment chart, quality assurance plan and the NABL-approved lab test report. Additional offerings include MTC, PMI Test Certificate, radiography test reports, and Third-Party Inspection Certificates, assuring you of quality and customer satisfaction.
Stainless Steel 440B Fasteners are widely used in industries requiring high-strength, wear-resistant, and corrosion-resistant fastening solutions. They are ideal for industrial machinery, tooling, pumps, valves, and high-load mechanical systems. The martensitic structure provides superior hardness, mechanical durability, and wear resistance, making these fasteners reliable in demanding environments. Engineers and technicians rely on 440B Fasteners for secure, precise, and durable fastening performance. Walid Stainless ensures that each fastener meets strict quality standards, providing dependable materials for industrial, mechanical, and precision engineering projects requiring strength, wear resistance, and long-term reliability.
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