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Mira Fasteners, located in Kuala Lumpur, Malaysia, has earned a solid reputation as a reliable manufacturer and supplier of Duplex Steel Bolts S31803. These bolts are celebrated for their remarkable strength, resistance to corrosion, and impressive longevity. Crafted from top-notch Duplex 2205 (UNS S31803) stainless steel, they cleverly blend the advantages of both austenitic and ferritic microstructures. This special combination gives them outstanding protection against pitting, crevice corrosion, and stress corrosion cracking, making them perfect for tough environments like marine, chemical, and offshore industries.
The chemical makeup of Duplex Steel Bolts S31803 is well-balanced, featuring around 22% chromium, 5–6% nickel, 3% molybdenum, and some nitrogen, all of which boost their mechanical properties and resistance to corrosion. With a high tensile strength of about 620 MPa and a yield strength of around 450 MPa, they easily surpass many standard stainless steels.
|
Grade |
Tensile Strength
(MPa) min |
Elongation
(% in 50mm) |
Yield Strength
0.2% Proof (MPa) min |
Hardness
Rockwell C (HR C) |
|---|---|---|---|---|
| Duplex Steel Bolts S31803 |
621 |
25 |
448 |
21 max |
|
Material |
Specification |
Standards |
Size
|
Length |
|
Duplex Steel S31803
|
IS
BS
ASTM
|
ASTM / ASME – A/ SA 479 / 479 |
3 mm
to
200 mm
|
M02 to M30
|
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.
Duplex Steel Bolts S31803 are widely used in demanding industries due to their high strength and corrosion resistance. They are ideal for applications in marine environments, chemical processing, oil and gas industries, and construction. These bolts are commonly employed in critical structures like pipelines, pressure vessels, and marine equipment. Their durability and resistance to stress corrosion cracking make them suitable for high-pressure and high-temperature environments, ensuring reliable performance and longevity in challenging conditions.
These bolts find their way into various demanding applications, including desalination plants, chemical processing, heat exchangers, and oil and gas platforms, where high mechanical strength and excellent corrosion resistance are essential for ensuring safety and reliability.
Mira Fasteners is a leading manufacturer and supplier of high-quality fasteners in Kuala lumpur, Malaysia, with over 8 years of experience serving global industries.
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