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Punit Fasteners is a reputable manufacturer and supplier of top-notch ASTM A193 B8M Bolts, proudly based in Delhi, India. With a strong focus on precision engineering and ensuring customer satisfaction, this company provides durable, corrosion-resistant bolts that are perfect for critical industrial applications. By utilizing advanced manufacturing techniques and maintaining strict quality control, Punit Fasteners guarantees that each product adheres to international standards. Their vast inventory and prompt delivery services have made them a go-to choice for clients in various sectors, including construction, petrochemicals, power plants, and marine industries. Known for their excellence, Punit Fasteners continues to reliably serve both domestic and global markets.
ASTM A193 B8M Bolts are crafted from austenitic stainless steel, specifically Type 316, which is enriched with molybdenum to boost corrosion resistance. The typical chemical makeup includes 16-18% chromium, 10-14% nickel, and 2-3% molybdenum. These bolts showcase impressive mechanical properties, featuring a minimum tensile strength of 75 ksi and a yield strength of 30 ksi. They also maintain excellent ductility and toughness, even in low temperatures. The processes of heat treatment and strain hardening further bolster their strength and durability, making them ideal for demanding applications in harsh environments.
| 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.
You’ll find ASTM A193 B8M Bolts widely used in industries that require high corrosion resistance and strength, such as chemical processing, marine, oil and gas, and power generation. These bolts excel in high-temperature and high-pressure settings, providing reliable performance in heat exchangers, pressure vessels, and reactors. Their outstanding resistance to chlorides and acidic conditions makes them perfect for offshore and coastal installations. Additionally, they are utilized in pharmaceutical and food processing equipment, where hygiene and durability are paramount. The blend of strength, corrosion resistance, and reliability ensures their extensive use across various applications.
Sheetal 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.
Punit Fasteners is a leading manufacturer and supplier of high-quality fasteners in Delhi, India, with over 15 years of experience serving global industries.
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