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Ramu Fasteners stands out as a top manufacturer and supplier of ASTM A453 Grade 660 Class D Stud Bolts in Hyderabad, delivering high-performance fastening solutions designed for the toughest service conditions. Crafted with cutting-edge techniques and rigorous quality checks, these stud bolts comply with international standards for high-temperature and high-pressure applications. Known for their remarkable strength, excellent creep resistance, and long-lasting stability at elevated temperatures, Ramu Fasteners’ ASTM A453 GR 660 Class D Stud Bolts are widely utilized in power generation, petrochemical, refinery, and heavy engineering sectors, ensuring dependable and safe bolting performance in critical assemblies.
ASTM A453 Grade 660 Class D Stud Bolts are made from a precipitation-hardened austenitic iron–nickel–chromium alloy, enhanced with molybdenum and nitrogen. This unique composition grants them exceptional high-temperature strength, oxidation resistance, and creep resistance. On the mechanical side, these stud bolts showcase impressive tensile and yield strength, outstanding fatigue resistance, and solid toughness, even under high temperatures. Their ability to maintain mechanical properties under prolonged heat and stress makes them perfect for demanding service environments.
Material | Dimensions | Standards | Size | Length |
ASTM A453 GR 660 CLASS D 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 A453 GR 660 Class D Stud Bolts find extensive use in scenarios that involve extreme temperatures, pressures, and mechanical loads. You’ll commonly see them in gas and steam turbines, boilers, heat exchangers, pressure vessels, and high-temperature flanged joints. They are heavily relied upon in power plants, petrochemical facilities, oil and gas refineries, and aerospace-related thermal systems. These stud bolts are particularly suited for critical joints that demand exceptional creep resistance and long-term stability. Their superior performance guarantees safety and reliability in even the most challenging applications.
At Ramu Fasteners, our ASTM A 453 GR 660 Class D stud bolts are carefully installed to ensure authenticity and quality. Each stud bolt is individually inspected and clamped to prevent corrosion. They are neatly packaged in hard labeled boxes that provide important production information and quantities. Our packaging system protects fasteners during transit, ensuring they arrive in excellent condition, ready to be used in high-stress and high temperature applications.
Ramu Fasteners is a leading manufacturer and supplier of high-quality fasteners in Hyderabad, India, with over 8 years of experience serving global industries.
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