Home >ASTM A193 B8 CL3 Stud Bolts
Majid Fasteners is a reputable producer and supplier of superior industrial fasteners in Dubai, United Arab Emirates, with a reputation for producing goods that adhere to global standards. With a focus on ASTM A193 B8 Class 3 stud bolts, we offer high-strength, corrosion-resistant fasteners that are perfect for the chemical, petrochemical, oil and gas, and marine industries. Majid Fasteners guarantees dependable fastening solutions that support the safe, effective, and long-lasting performance of vital industrial equipment in demanding and corrosive environments. The company is dedicated to precision, durability, and customer satisfaction.
ASTM A193 B8 Class 3 stud bolts are manufactured using austenitic stainless steel that has superior resistance against corrosion due to the presence of Chromium (18-20), Nickel (8-11), Molybdenum (2-3), Carbon (up to 0.08), Manganese (less than 2), Phosphorus (up to 0.045) and Sulfur (up to 0.03). It has a base Iron content. This alloy composition offers outstanding performance when exposed to the effects of chlorides, acids and high-temperature environments. The mechanical property specification for these stud bolts is as follows: minimum tensile strength is 515 MPa; yield strength is 205 MPa; elongation is 40%. These stud bolts demonstrate dependable performance when used in high-pressure/high-temperature/corrosive industrial applications and provide long-lasting durability and safety when used in critical assemblies.
|
Material |
Specification |
Standards |
Size
|
Length |
|
ASTM A193 B8 CL3 StudBolt
|
IS
BS
ASTM
|
DIN, ISO, JIS, GB, IS, BS, ASTM |
M 02 to M 160
|
3 mm to 200 mm
|
| 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 |
ASTM A193 B8 Class 3 studs and bolts have a broad application across all industries where high-strength, durable, and reliable fasteners are necessary for extreme or hostile operating conditions. Typical applications include industries such as petroleum, high-temperature chemical plants, and marine. Fasteners manufactured from ASTM A193 B8 Class 3 stud bolts provide reliable and durable connections for assembling flanges, valves, pumps, pressure vessels, and piping systems to ensure continued operation of highly critical industrial equipment while under extreme pressure, high temperatures, and exposure to corrosive or aggressive chemicals.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
