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Aria Fasteners, located in Hamilton, New Zealand, is your go-to source for top-notch ASTM A193 B8 CL5 fasteners, which include bolts, nuts, stud bolts, and washers. These fasteners are designed with strength, durability, and corrosion resistance in mind, making them perfect for high-pressure, high-temperature, and demanding industrial settings. At Aria Fasteners, we take pride in ensuring that each fastener meets rigorous quality standards, so you can count on them to maintain structural integrity, resist wear, and perform reliably even under heavy loads and vibrations. They’re especially suited for critical assemblies where long-term reliability, safety, and performance are non-negotiable.
Made from austenitic stainless steel, typically 316, ASTM A193 B8 CL5 fasteners boast excellent corrosion resistance, impressive tensile strength, and outstanding toughness. The CL5 grade offers extra protection against chlorides, stress corrosion cracking, and oxidation, making these fasteners ideal for use in chemical, petrochemical, offshore, and marine environments. Their mechanical stability under heavy loads, vibrations, and temperature fluctuations ensures that they provide secure fastening and long-lasting performance.
| Element | B8 CL5 | B8 CL5 | B8M CL5 |
| Carbon | 0.37 – 0.49% | 0.08% max | 0.08% max |
| Manganese | 0.65 – 1.10% | 2.00% max | 2.00% max |
| Phosphorus, max | 0.035% | 0.045% | 0.045% |
| Sulfur, max | 0.040% | 0.030% | 0.030% |
| Silicon | 0.15 – 0.35% | 1.00% max | 1.00% max |
| Chromium | 0.75 – 1.20% | 18.0 – 20.0% | 16.0 – 18.0% |
| Nickel | 8.0 – 11.0% | 10.0 – 14.0% | |
| Molybdenum | 0.15 – 0.25% | 2.00 – 3.00% |
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Material
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Specification
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Standards |
Size
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Length
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ASTM A193 B8 CL5 Fasteners
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IS BS ASTM |
DIN, ISO, JIS, GB, IS, BS, ASTM |
M 02 to M 160 |
3 mm to 200 mm |
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.
ASTM A193 B8 CL5 fasteners are widely used in high-temperature and high-pressure environments, making them ideal for the petrochemical, power generation, and aerospace industries. They are commonly employed in applications such as pressure vessels, gas turbines, and steam generators where durability and resistance to extreme conditions are critical. Their robust properties also make them suitable for use in chemical processing plants and other demanding industrial settings, ensuring reliable performance and safety.
These fasteners find their place in various industries, including oil and gas, chemical processing, power generation, marine engineering, and high-pressure piping systems. They are particularly well-suited for flange connections, pressure vessels, and other critical bolted assemblies where strength, corrosion resistance, and reliability are paramount. When you choose ASTM A193 B8 CL5 fasteners from Aria Fasteners, you’re opting for long-term durability, structural integrity, and reduced maintenance, making them the preferred choice for industries that demand high-performance, corrosion-resistant fastening solutions.
Aria Fasteners is a leading manufacturer and supplier of high-quality fasteners in Hamilton, New Zealand, with over 8 years of experience serving global industries.
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