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Punit Fasteners, a well-known manufacturer and supplier located in Delhi, India, specializes in top-notch ASTM A453 GR 660 Class D stud bolts, crafted for high-temperature and high-stress settings. These bolts are made from precipitation-hardened austenitic stainless steel, providing outstanding mechanical strength, resistance to stress rupture, and excellent oxidation resistance. Punit Fasteners adheres to strict quality control protocols and international ASTM standards to guarantee reliability and performance. They cater to various industries, including power generation, aerospace, petrochemical, and nuclear energy, offering robust fastening solutions that prioritize safety, durability, and efficiency in the most demanding industrial applications.
The ASTM A453 GR 660 Class D stud bolts are made from precipitation-hardened austenitic stainless steel, containing 24–27% nickel, 13–17% chromium, 1–1.5% molybdenum, along with trace amounts of titanium, aluminum, and manganese. These bolts undergo a process of solution annealing and aging to achieve their impressive strength and heat resistance. They boast a minimum tensile strength of 125 ksi (860 MPa) and a yield strength of 105 ksi (725 MPa). With remarkable resistance to creep, stress rupture, and oxidation, these fasteners can maintain their structural integrity even at elevated temperatures of up to 704°C.
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 industries that function under high-temperature and high-pressure conditions. In power generation, they are crucial for turbine casings, heat exchangers, and boiler assemblies. In the aerospace sector, they are employed in engine components and thermal shielding applications. The chemical and petrochemical industries rely on them for reactors, flanges, and pressure vessels due to their exceptional stress rupture resistance. Their durability and high mechanical strength make them perfect for nuclear power plants, marine engineering, and other critical infrastructures where safety and long-term performance are essential.
At Punit 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.
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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