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Aria Fasteners, located in Hamilton, New Zealand, is your go-to source for top-notch ASTM A193 B8 stud bolts. These bolts are crafted for high performance and reliability, built to handle extreme pressures, high temperatures, and tough industrial environments. At Aria Fasteners, we take pride in ensuring that each stud bolt meets rigorous quality standards, delivering fasteners that boast impressive mechanical strength, precise dimensions, and long-lasting durability. They’re perfect for critical applications in industries where safety, performance, and reliability are non-negotiable.
Made from austenitic stainless steel (usually 304), ASTM A193 B8 stud bolts offer outstanding corrosion resistance, high tensile strength, and remarkable toughness. They’re designed to thrive in high-temperature settings and resist oxidation, pitting, and stress corrosion cracking. These bolts maintain their structural integrity even under heavy loads and vibrations, guaranteeing secure fastening and dependable performance in demanding situations.
| Element | B7 | B8 | B8M |
| 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 |
| B7 | 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 Class 1 | All | 75 | 30 | 30 | 50 |
| B8M Class 1 | All | 75 | 30 | 30 | 50 |
| B8 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 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 StudBolt
|
IS
BS
ASTM
|
DIN, ISO, JIS, GB, IS, BS, ASTM |
M 02 to M 160
|
3 mm to 200
|
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 Stud Bolts are widely used in industries requiring high-strength and corrosion-resistant fastening solutions. Key applications include petrochemical plants, oil and gas refineries, and power generation facilities. These bolts are essential for securing pressure vessels, flanges, valves, and pipeline assemblies in high-temperature and high-pressure environments. Their superior durability and reliability make them ideal for critical operations, ensuring safety and stability in demanding conditions. Choose ASTM A193 B8 Stud Bolts for dependable performance in challenging industrial applications.
You’ll find ASTM A193 B8 stud bolts commonly used in chemical processing plants, the oil and gas sector, power generation, petrochemical equipment, and high-pressure piping systems. They’re ideal for flange connections, pressure vessels, and critical bolted assemblies where strength, durability, and resistance to corrosion and heat are crucial. Their sturdy design ensures long-term reliability, minimizes maintenance needs, and optimizes performance in essential 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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