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Rinku Fasteners offers high-quality ASTM A193 B9 stud bolts, engineered for superior performance in high-temperature and high-pressure environments. These bolts, made from chromium-molybdenum alloy steel, ensure exceptional strength and durability. Ideal for use in the oil, gas, and petrochemical industries, ASTM A193 B9 fasteners are designed to withstand harsh conditions while maintaining integrity. Trust Rinku Fasteners for reliable, precision-engineered solutions that meet the most stringent industrial standards.
Rinku Fasteners is able to keep up with the demand of the power, petrochemical, and engineering industries, among others, through the support of its modern production plant and highly qualified engineers.
| Element | B9 | B9 | B9M |
| 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 |
| B9 | 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 | |
| B9 Class 1 | All | 75 | 30 | 30 | 50 |
| B9M Class 1 | All | 75 | 30 | 30 | 50 |
| B9 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 B9 Stud Bolt
|
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 B9 stud bolts are made of alloy steel with the main components being chromium (around 9%), molybdenum, carbon, and trace elements that enhance the strength and heat resistance of the material. The bolts are subjected to a proper heat treatment that results in increased hardness, tensile strength, and creep resistance at high temperatures. They possess good mechanical properties, for instance, high tensile strength, high yield strength, and good hardness, which make them very resistant even at elevated temperatures. Being free of corrosion and oxidation, they are thus very suitable for tough industrial environments. Also, being very stable when they undergo thermal stress, they are still safe for use in pressure vessels and other high-temperature assemblies for a long time.
ASTM A193 B9 stud bolts are made from alloy steel which contains carbon, chromium (about 9%), molybdenum, and some trace elements for strength and heat resistance. These fasteners are heat treated properly, which results in improved hardness, tensile strength, and resistance to creep, at elevated temperatures. They have outstanding mechanical properties, such as very high tensile strength, excellent yield strength, and remarkable hardness, which make them very tough even in high-temperature environments. The non-corroding and non-oxidizing features of the bolts make them good working in severe industrial settings, and their stable behavior under thermal stress gives them long-term use in pressure vessels and temperature-resistant assemblies.
Rinku Fasteners is a leading manufacturer and supplier of high-quality fasteners in Kolkata, India, with over 8 years of experience serving global industries.
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