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Ramu Fasteners, located in Hyderabad, has built a solid reputation as a reliable manufacturer and supplier of high-performance industrial fasteners, including ASTM A453 Grade 660 Class C Bolts. With a focus on precision engineering and rigorous quality standards, Ramu Fasteners provides fastening solutions that can withstand extreme service conditions. Their ASTM A453 Grade 660 Class C Bolts are crafted to deliver outstanding strength, creep resistance, and reliability even at high temperatures. Made from advanced alloy materials and subjected to controlled heat treatment processes, these bolts comply with international specifications. They are widely utilized in critical industrial applications, ensuring durability, safety, and long-lasting performance in challenging environments.
ASTM A453 Grade 660 Class C Bolts are made from a precipitation-hardened iron-nickel-chromium alloy, often referred to as Alloy A-286. This composition features nickel, chromium, molybdenum, titanium, and aluminum, which together provide excellent high-temperature strength and corrosion resistance. These bolts boast a tensile strength of about 130–150 ksi, a yield strength of around 85–100 ksi, and commendable ductility. Class C fasteners undergo solution treatment and aging to achieve superior creep and stress-rupture resistance, ensuring they maintain mechanical stability at temperatures reaching up to 1,300°F (700°C).
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.
ASTM A453 Grade 660 Class C Bolts find extensive use in applications that demand high strength and stability under elevated temperatures. They are particularly well-suited for aerospace components, gas turbines, power generation systems, petrochemical equipment, and high-temperature pressure vessels. These bolts are frequently employed in exhaust systems, flanges, heat exchangers, and other critical assemblies where reliability is paramount. Their ability to perform under extreme conditions makes them a go-to choice for engineers and manufacturers looking for dependable fastening solutions in demanding environments.
At Ramu 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.
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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