Kyaw Stainless is a well-respected manufacturer and supplier located in Naypyidaw, Myanmar, specializing in top-notch Stainless Steel 440B Fasteners. These fasteners are designed to deliver high strength, impressive hardness, and outstanding resistance to wear and corrosion, making them perfect for tough industrial and mechanical tasks. At Kyaw Stainless, they prioritize precise manufacturing and rigorous quality testing to ensure their products meet international standards. Renowned for their durability and reliability, the Stainless Steel 440B Fasteners from Kyaw Stainless are a go-to choice in industries that demand high-performance fastening solutions capable of handling stress, friction, and harsh environments. Kyaw Stainless, based in Naypyidaw, Myanmar, 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.
The composition of Stainless Steel 440B Fasteners mainly includes iron, 16–18% chromium, 0.75–0.95% carbon, along with small amounts of manganese, silicon, and molybdenum. This martensitic blend strikes a great balance between hardness, strength, and moderate corrosion resistance. After heat treatment, these fasteners boast a tensile strength of around 760 MPa and a yield strength of about 450 MPa. They also offer high wear resistance, excellent mechanical stability, and impressive dimensional accuracy, making them perfect for high-stress and wear-intensive applications.
| 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.
You’ll find Stainless Steel 440B Fasteners widely used in the automotive, aerospace, and marine sectors for assembling machinery and components that face wear and vibration. They’re also found in valves, pumps, molds, and precision instruments where strength and hardness are essential. Plus, these fasteners are ideal for food processing and chemical equipment thanks to their hygienic properties and corrosion resistance. With Kyaw Stainless’s 440B Fasteners, you can expect long-lasting performance, precise dimensions, and durability, making them suitable for both heavy-duty and precision industrial applications.







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