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Mira Fasteners is your go-to manufacturer and supplier of ASTM A453 Grade 660 Class B Stud Bolts, proudly based in Kuala Lumpur, Malaysia. These robust, high-temperature fasteners are essential in various industries, including power generation, oil & gas, petrochemical, and aerospace. At Mira Fasteners, every stud bolt is crafted with precision, rigorously quality-tested, and meets international standards. Built to withstand the toughest conditions, these bolts excel in applications that require both mechanical strength and thermal stability. With a commitment to timely delivery and engineering excellence, Mira Fasteners caters to clients throughout Malaysia and Southeast Asia.
The ASTM A453 Grade 660 Class B Stud Bolts are made from austenitic stainless steel, featuring a blend of nickel (24–27%), chromium (13–17%), and molybdenum (1.5–2.5%). This combination offers outstanding resistance to oxidation, stress rupture, and creep. These bolts undergo solution treatment and precipitation hardening to achieve a minimum tensile strength of 860 MPa and a yield strength of 550 MPa. Class B is specifically designed for prolonged high-temperature applications, enduring temperatures up to 704°C (1300°F) while maintaining structural integrity over time. The double-ended threaded design of these stud bolts makes them perfect for flanged joints and critical bolting tasks that require disassembly and reassembly.
Material | Dimensions | Standards | Size | Length |
ASTM A453 GR 660 CLASS B Stud Bolts | ASME B18.2.1, B18.3 | ASTM, ASME | M 02 to M 160 | 3 mm to 200 mm |
|
Element |
Content |
|---|---|
|
Carbon |
0.08 max |
|
Manganese |
2.00 max |
|
Phosphorus, max |
0.040 max |
|
Sulfur, max |
0.030 max |
|
Silicon |
1.00 max |
|
Nickel |
24.0-27.0 |
|
Chromium |
13.5-16.0 |
|
Molybdenum |
1.00-1.50 |
|
Tungsten |
– |
|
Titanium |
1.9-2.35 |
|
Aluminum |
0.35 max |
|
Vanadium |
0.10-0.50 |
|
Boron |
0.001-0.010 |
| Tensile Strength/Ultimate Tensile Stress (UTS) – (Mpa) | 895 min |
| Yield Strength/Proof Stress(0.2% Offset) (YS) – (Mpa) | 585 min |
| Elongation in 4D (El) | 15 |
| Reduction | 18 |
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 A 453 GR 660 Class B Stud Bolts are used in high-pressure applications where strength and reliability are important. These fibers are commonly found in the aerospace, automotive, and industrial industries, and are ideal for packaging in high-temperature environments. They are used in gas turbines, compressors and structural assemblies, where their high tensile strength and oxidation resistance ensure durability and performance Their ability to withstand extreme conditions makes them suitable for critical applications in commercial and military contexts.
You’ll find ASTM A453 Grade 660 Class B Stud Bolts commonly used in steam turbines, boilers, heat exchangers, pressure vessels, and other high-pressure, high-temperature systems. In petrochemical plants and refineries, they play a crucial role in securing flanged connections and reactor equipment that experience thermal cycling. Their strength and resistance to oxidation make them a reliable choice for aerospace components, industrial furnaces, and power plant infrastructure. These stud bolts are vital for maintaining system integrity under extreme mechanical and thermal stress, helping to reduce the risk of failure and minimize maintenance needs. They are a trusted option for engineers seeking durable, high-performance solutions.
Mira Fasteners is a leading manufacturer and supplier of high-quality fasteners in Kuala lumpur, Malaysia, with over 8 years of experience serving global industries.
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