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Hamad Fasteners, a top-notch manufacturer and supplier based in Riyadh, Saudi Arabia, is well-known for delivering high-quality fastening solutions tailored for tough industrial applications. Among their standout products, ASTM A193 B8M Bolts are designed to offer exceptional corrosion resistance, strength, and durability, making them perfect for critical environments like chemical plants, offshore platforms, petrochemical facilities, and power generation industries. Built to meet international standards, these bolts guarantee secure and long-lasting fastening even in harsh conditions, ensuring reliable performance and safety across all applications.
Crafted from stainless steel Grade 316, ASTM A193 B8M Bolts include chromium, nickel, and molybdenum in their composition. The molybdenum boosts their resistance to pitting, crevice corrosion, and stress corrosion cracking caused by chlorides. On the mechanical side, these bolts provide high tensile and yield strength, toughness, and stability at elevated temperatures, making them ideal for high-pressure and corrosive settings. Their alloy composition ensures they maintain durability and structural integrity in critical industrial applications over time.
| 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 B8M Bolt
|
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.
These bolts find extensive use in pipelines, pressure vessels, heat exchangers, chemical processing equipment, marine installations, and refineries. They’re also a great fit for power generation systems, offshore structures, and other industrial setups where corrosion resistance, mechanical strength, and reliability are key. With their impressive combination of strength, durability, and resistance to harsh environments, ASTM A193 B8M Bolts deliver secure and trustworthy fastening solutions for essential applications.
Hamad fasteners contain careful packages of ASTM A193 B8M bolts to ensure safe delivery and optimal quality. Each bolt is individually inspected and carefully wrapped to prevent damage during transport. We use durable protective coatings and fasteners to keep the bolt intact. Custom packaging is available to meet specific needs. Our commitment to quality extends through our packaging, ensuring that your fasteners arrive in perfect condition, ready for immediate use.
Hamad Fasteners is one of the Industrial suppliers and manufacturers of quality fasteners in Riyadh, Saudi Arabia, that has spent more than 12 years serving various industries.
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