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Punit Fasteners is a well-respected manufacturer and supplier of ASTM A193 B8M Stud Bolts, proudly based in Delhi, India. We’re dedicated to quality and precision engineering, providing high-performance fastening solutions that cater to both industrial and commercial needs. Our ASTM A193 B8M Stud Bolts are made from top-notch materials and utilize advanced manufacturing techniques to guarantee exceptional strength, durability, and resistance to corrosion. We serve clients not just across India but around the globe, strictly adhering to industry standards while ensuring prompt deliveries, competitive pricing, and customizable options to fit specific project requirements, especially in critical and demanding environments.
These ASTM A193 B8M Stud Bolts are crafted from AISI 316 stainless steel, which includes chromium, nickel, and molybdenum to boost corrosion resistance. They boast a minimum tensile strength of 75 ksi and a yield strength of 30 ksi, along with impressive elongation and hardness properties that make them perfect for high-pressure and high-temperature applications. The inclusion of molybdenum enhances their resistance to pitting and crevice corrosion in chloride environments, making them a great choice for marine and chemical applications. They undergo solution annealing and strain hardening, meeting the mechanical and chemical specifications outlined in ASTM A193 standards for Grade B8M Class 1 and Class 2.
| Element | B8 | 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 |
|
Material |
Specification |
Standards |
Size
|
Length |
|
ASTM A193 B8M 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 B8M Stud Bolts find their place in a variety of critical applications where corrosion and high-temperature resistance are vital. You’ll see them in chemical processing plants, refineries, marine settings, power generation facilities, and food processing units. Their robust strength and durability make them ideal for flanged connections, pressure vessels, piping systems, and heat exchangers. In offshore and petrochemical industries, B8M bolts provide reliable sealing and long-lasting performance even under extreme conditions. Their outstanding performance in harsh environments makes them essential for securing equipment in safety-critical and high-performance industries.
Punit Fasteners ensures that ASTM A193 B8M stud bolts are meticulously packaged to maintain their quality and integrity. Each bolt is individually inspected and then securely packed in robust, moisture-resistant materials to prevent damage during transit. Packaging options include sturdy cartons or wooden crates, depending on order size and customer specifications. The packaging also features clear labeling for easy identification and traceability, ensuring that the bolts reach their destination in optimal condition.
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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