Aditya Stainless, located in Kolkata, India, is a well-respected manufacturer and supplier of Stainless Steel 440B Fasteners. They provide top-notch fastening solutions that are built for strength, hardness, and a decent level of corrosion resistance. These high-carbon martensitic stainless steel fasteners are perfect for applications that require exceptional wear resistance and durability, especially under high mechanical stress. Crafted with precision and adhering to international standards, Aditya Stainless ensures that their 440B fasteners are known for their dimensional accuracy, heat-treatability, and long-lasting performance. You’ll find these fasteners widely used in sectors like tooling, automotive, defense, and mechanical engineering, where high performance is essential in semi-corrosive and abrasive environments.
Stainless Steel 440B Fasteners are made with a high carbon content (0.75–0.95%) and chromium (16–18%), striking a great balance between hardness and corrosion resistance. After undergoing heat treatment, 440B can achieve a tensile strength of around 700–950 MPa and a Rockwell hardness of up to 55–58 HRC. These fasteners offer moderate corrosion resistance, impressive edge retention, and excellent wear resistance. While they may be slightly less hard than 440C, they provide better toughness. 440B fasteners are perfect for applications that demand high strength, thermal stability, and precision under mechanical stress, particularly in environments where moderate corrosion resistance is adequate.
| 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 Aditya Stainless, Kolkata India, 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 designed for high-stress applications that require outstanding hardness, wear resistance, and mechanical strength. They find common use in industries such as automotive, tooling, aerospace, defense, machinery, and industrial equipment manufacturing. These fasteners are ideal for securing components in pumps, valves, precision instruments, and high-speed mechanical assemblies. Additionally, they are utilized in knife manufacturing, gear systems, and heavy-duty locking mechanisms. Thanks to their moderate corrosion resistance, they are well-suited for various applications where durability and reliability are key.
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