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The Fasteners Mart, Mumbai, India, is a well-known industrial fastener supplier that is recognized for reliability, quality, and precision-engineered solutions. We supply products to a broad array of industries such as automotive, aerospace, oil & gas, and construction with products designed to endure harsh conditions. One of our high-performance products is Stainless Steel 440B Stud Bolts. Made of Grade 440B stainless steel, these round-threaded fasteners provide high hardness, strength, and mild corrosion resistance—perfect for demanding, high-load situations in challenging or high-temperature conditions.
440B Stainless Steel Stud Bolts are made up of carbon (0.75–0.95%), chromium (16–18%), and trace elements such as manganese, silicon, and molybdenum. They provide a maximum tensile strength of 760 MPa and can reach a Rockwell hardness of about 58 HRC through heat treatment. The density is about 7.8 g/cm³ and they have a melting range between 1480–1530°C. All this makes them extremely suitable for high-wear applications that need both strength and moderate corrosion resistance.
| 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 |
To satisfy our clients needs by providing high quality products at competitive price as per the schedule and to maintain long term relationship with our clients.
Stainless Steel 440B Stud Bolts find extensive application in situations where wear resistance and high hardness are essential. Typical applications include valve parts, pump shafts, industrial tooling, and mechanical assemblies subject to stress and friction. The stud bolts are best suited for application in automotive parts, chemical processing equipment, and manufacturing machinery. They function well in conditions involving moderate corrosion, high mechanical load, or varying temperatures, and are thus well-suited for static and dynamic load-bearing operations.
The Fasteners Mart offers safe and timely delivery of Stainless Steel 440B Stud Bolts globally. Our packaging consists of moisture-proof wraps, bubble sheets, wooden boxes, or export-grade cartons, depending on the size of the order and destination. Each shipment is properly labeled for traceability and handled carefully to ensure the bolts reach the destination in pristine condition.
The Fasteners Mart is a leading manufacturer and supplier of high-quality fasteners in Mumbai, India, with over 8 years of experience serving global industries.
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