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Aria Fasteners, located in Hamilton, New Zealand, is a well-regarded manufacturer and supplier of high-precision ASTM A193 B8 CL4 Stud Bolts, designed for the most demanding industrial settings. The company prides itself on adhering to strict international standards, leveraging advanced production techniques, and delivering products that are exceptionally reliable. Catering to sectors like petrochemical, energy, construction, and marine engineering, Aria Fasteners provides stud bolts that promise long-lasting durability and consistent performance. Their dedication to customer service, technical know-how, and dependable delivery has made them a go-to partner for top-notch stainless-steel stud bolt solutions, both in New Zealand and around the world. *(≈100 words)*
Manufactured from 304 stainless steel, ASTM A193 B8 CL4 Stud Bolts undergo a solution-annealing process and advanced strain-hardening, resulting in mechanical strength that surpasses lower classes. Their chemical makeup features 18–20% chromium, 8–11% nickel, minimal carbon, and carefully controlled levels of manganese, silicon, phosphorus, and sulfur, which together provide excellent corrosion resistance. Class 4 bolts benefit from enhanced tensile and yield strength due to rigorous hardening processes. These characteristics ensure the bolts exhibit remarkable hardness, stress resistance, and reliability, even in high-temperature, high-pressure, and chloride-rich environments. *(≈90 words)*
| Element | B8 CL3 | B8 CL3 | B8M CL3 |
| 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% |
| Grade | Size | Tensile ksi, min | Yield, ksi, min | Elong, %, min | RA % min |
| B8 CL3 | Up to 2-1/2 | 125 | 105 | 16 | 50 |
| 2-5/8 – 4 | 115 | 95 | 16 | 50 | |
| 4-1/8 – 7 | 100 | 75 | 18 | 50 | |
| B8 CL3 Class 1 | All | 75 | 30 | 30 | 50 |
| B8M CL3 Class 1 | All | 75 | 30 | 30 | 50 |
| B8 CL3 Class 2 | Up to 3/4 | 125 | 100 | 12 | 35 |
| 7/8 – 1 | 115 | 80 | 15 | 35 | |
| 1-1/8 – 1-1/4 | 105 | 65 | 20 | 35 | |
| 1-3/8 – 1-1/2 | 100 | 50 | 28 | 45 | |
| B8M CL3 Class 2 | Up to 3/4 | 110 | 95 | 15 | 45 |
| 7/8 – 1 | 100 | 80 | 20 | 45 | |
| 1-1/8 – 1-1/4 | 95 | 65 | 25 | 45 | |
| 1-3/8 – 1-1/2 | 90 | 50 | 30 | 45 |
Material | Specification | Standards | Size | Length |
ASTM A193 B8 CL4 Stud Bolt
| IS BS ASTM | DIN, ISO, JIS, GB, IS, BS, ASTM | M 02 to M 160 | 3 mm to 200 mm |
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ASTM A193 B8 CL4 stud bolts are widely used in high-pressure and high-temperature environments, such as in the oil and gas, petrochemical, and power generation industries. They are essential for securing flanges, valves, and other critical components in reactors, turbines, and pipelines. Their superior strength and corrosion resistance make them suitable for demanding applications where reliability and durability are crucial. These stud bolts ensure the integrity and performance of machinery and infrastructure under extreme conditions.
ASTM A193 B8 CL4 Stud Bolts are essential in settings where exceptional strength, corrosion resistance, and long-term stability are crucial. Their superior mechanical performance makes them perfect for high-pressure and high-temperature applications found in refineries, chemical processing plants, power generation facilities, and offshore platforms. You’ll find them commonly used in pressure vessels, boiler units, reactors, heat exchangers, and flanged joints, ensuring safety and efficiency in demanding operations. *(≈90 words)*
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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