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Aria Fasteners, located in Hamilton, New Zealand, has built a solid reputation as a reliable manufacturer and supplier of top-notch industrial fastening solutions. Their ASTM A193 B8 CL5 Stud Bolts are designed to deliver exceptional strength, corrosion resistance, and durability, making them perfect for critical applications that involve high temperatures. With a commitment to strict quality control, these stud bolts guarantee secure and long-lasting performance in assemblies that demand precise and dependable fastening. Aria Fasteners caters to various industries, including petrochemical, oil and gas, power generation, and chemical processing, providing components that can handle extreme pressures and tough service conditions.
Crafted from austenitic stainless steel with a high content of chromium and nickel, ASTM A193 B8 CL5 Stud Bolts excel in resisting oxidation, corrosion, and pitting, whether in mildly or highly corrosive environments. These bolts boast impressive tensile strength, toughness, and durability, while their precision threading ensures a proper fit with compatible nuts and washers, delivering reliable clamping force. Their mechanical properties make them ideal for both static and dynamic loading in high-pressure and high-temperature assemblies.
| 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% |
| Grade | Size | Tensile ksi, min | Yield, ksi, min | Elong, %, min | RA % min |
| B8 CL5 | 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 CL5 Class 1 | All | 75 | 30 | 30 | 50 |
| B8M CL5 Class 1 | All | 75 | 30 | 30 | 50 |
| B8 CL5 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 CL5 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 CL5 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 CL5 stud bolts are widely used in critical industrial applications requiring high strength and corrosion resistance. They are ideal for pressure vessels, heat exchangers, and piping systems in the oil and gas, chemical, and power generation industries. Their ability to withstand extreme temperatures and aggressive environments makes them suitable for applications like steam turbines, reactor vessels, and high-pressure valves. These stud bolts ensure secure and reliable connections in demanding operational settings.
These stud bolts find extensive use in industries that require high-performance, corrosion-resistant, and heat-tolerant fastening solutions. They are particularly well-suited for flanged joints, pipelines, chemical reactors, heat exchangers, and industrial machinery that face elevated temperatures and pressures. ASTM A193 B8 CL5 Stud Bolts are also utilized in offshore platforms, power plants, and petrochemical facilities, where secure and long-lasting fastening is essential. Their unique combination of strength, corrosion resistance, and thermal endurance makes them a trustworthy choice for demanding industrial applications.
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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