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Punit Fasteners, based in Delhi, India, stands out as a top manufacturer and supplier of ASTM A453 GR 660 Class C fasteners, known for their impressive strength and reliability in high-temperature and high-stress situations. Crafted from precipitation-hardened austenitic stainless steel, these fasteners are designed to deliver exceptional mechanical strength, thermal stability, and oxidation resistance. Punit Fasteners adheres strictly to ASTM specifications, ensuring dependable fastening solutions for critical applications. They cater to various industries, including power generation, aerospace, chemical processing, and oil & gas, providing durable and precisely engineered fasteners that can withstand extreme service conditions.
The ASTM A453 GR 660 Class C fasteners are made from precipitation-hardened austenitic stainless steel, which contains about 24–27% nickel, 13–17% chromium, 1–1.5% molybdenum, along with trace amounts of titanium and aluminum. These fasteners undergo solution treatment and aging to achieve remarkable strength and heat resistance. They typically boast a minimum tensile strength of 115 ksi (790 MPa) and a yield strength of 95 ksi (655 MPa). With outstanding resistance to oxidation, creep, and stress rupture at temperatures reaching up to 704°C, these fasteners are perfect for demanding high-temperature environments.
Material | Dimensions | Standards | Size | Length |
ASTM A453 GR 660 CLASS C Fasteners | 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 fasteners widely used in industries that need high-performance fastening under elevated temperatures and mechanical stress. In the power generation field, they play a crucial role in turbines, boilers, and pressure vessels. The aerospace sector depends on them for jet engines and structural applications that face thermal cycling. In chemical and petrochemical facilities, they’re utilized in reactors, flanged joints, and heat exchangers. These fasteners are also well-suited for nuclear and marine applications, thanks to their excellent resistance to oxidation, creep, and thermal fatigue over extended service periods.
Sheetal fasteners contain ASTM A 453 GR 660 Class C fasteners carefully installed to ensure authenticity during transportation and storage. Each binder is individually inspected and securely wrapped with protective coatings to prevent corrosion. They are then packed in sturdy labeled boxes designed to withstand rigorous handling and the environment. This careful packaging assures that our high quality fasteners reach you in optimal condition, ready for immediate use in demanding 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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