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Punit Fasteners, a reputable manufacturer and supplier based in Delhi, India, focuses on creating ASTM A453 GR 660 Class C bolts that are built to perform exceptionally well in tough conditions. These bolts are made from precipitation-hardened austenitic stainless steel, which gives them remarkable strength, thermal stability, and resistance to oxidation. Committed to meeting ASTM standards, Punit Fasteners guarantees precision and quality in every single batch. They cater to various industries, including aerospace, power generation, petrochemical, and industrial processing, providing reliable fastening solutions that are perfect for high-temperature and high-pressure situations where durability and safety are paramount.
The ASTM A453 GR 660 Class C bolts are crafted from austenitic stainless steel, featuring around 24–27% nickel, 13–17% chromium, 1–1.5% molybdenum, along with trace amounts of titanium and aluminum. These bolts undergo a process of solution treatment and age hardening to enhance their mechanical properties. They boast a minimum tensile strength of 115 ksi (790 MPa) and a yield strength of 95 ksi (655 MPa). With outstanding resistance to creep, stress rupture, and oxidation at elevated temperatures up to 704°C, these bolts are perfect for challenging thermal and mechanical environments.
Material | Dimensions | Standards | Size | Length |
ASTM A453 GR 660 CLASS C 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.
You’ll find ASTM A453 GR 660 Class C bolts in various applications that demand both high strength and thermal resistance. In the power generation sector, they’re utilized in steam turbines, heat exchangers, and boiler systems. In aerospace, these bolts are integral to engine assemblies and airframe structures that face extreme heat and stress. Petrochemical facilities rely on them for pressure vessels, flanged joints, and reactors, thanks to their durability under high pressure and temperature. Additionally, these bolts are well-suited for nuclear power, marine, and industrial processing systems, ensuring long-lasting reliability even in harsh conditions.
At Punit Fasteners, we ensure that our ASTM A 453 GR 660 Class C bolts are packaged with the utmost care to preserve their quality during transportation. Each bolt is meticulously inspected and packaged in sturdy, protective containers to prevent damage. Our packaging solutions include tamper-evident seals and clearly labeled boxes to ensure easy identification and handling. Whether in bulk or customized quantities, our packaging guarantees that the bolts reach you in pristine condition, ready for your high-demand 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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