Weston Stainless, based in Midland, UK, is one of the prominent distributors of high-performance stainless steel fasteners renowned for their strength and great performance. Among its wide product range, Stainless Steel 440B Fasteners are very popular for their great hardness and abrasion resistance. These fasteners are produced from Grade 440B stainless steel, a martensitic stainless steel with high carbon content, providing strength and corrosion resistance. Available in different shapes like bolts, nuts, washers, and screws, the fasteners find widespread use where there is high strength, accuracy, and durability to wear requirements, and so find extensive applications in industrial, automotive, and tooling segments.
Stainless Steel 440B Fasteners contain mainly carbon (0.75-0.95%), chromium (16-18%), manganese (1% max), silicon (1% max), and molybdenum (0.75% max) with the trace elements increasing the corrosion resistance. Mechanically, they possess tensile strength between 735-1000 MPa, 450 MPa yield strength, and hardness up to 58 HRC upon heat treatment. They have a physical property of density 7.7 g/cm³, thermal conductivity of 24.2 W/m·K, and coefficient of thermal expansion of 10.1 µm/m·°C and are thus apt for high-wear conditions under extreme temperatures.
| 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, Designed for high-strength applications. Available in sizes ranging from M3 to M24, they are precision-manufactured to ensure reliable performance and durability.
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.
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.
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.
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.
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.
Stainless Steel 440B Fasteners are extensively used in industries such as automotive, aerospace, defense, and industrial machinery where strength and resistance to wear are critical. They are especially useful in cutting tools, bearings, surgical instruments, and high pressure applications because they possess superior hardness and resistance to deformation. They are also corrosion-resistant, making them ideal for marine, chemical processing, and food processing industries where they provide long service life in harsh conditions involving exposure to moisture, chemicals, and mechanical stress.
Stainless Steel 440B Fasteners are supplied with mill test certificates (MTC) according to EN 10204 3.1/3.2 to ensure quality compliance. They are properly packed in wooden boxes, bubble wrap, and plastic covers to avoid damage during shipping. With quick and effective global shipping, these fasteners are supplied to fulfill the needs of diverse industries, guaranteeing high performance and reliability in critical applications.
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