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The Mumbai, India-based Fasteners Mart is a well-known manufacturer and exporter of high-performance industrial fasteners to numerous industries. One of its specialized products is the ASTM A453 Grade 660 Class C Bolts, produced using high-temperature austenitic stainless steel. The bolts come in several shapes, including hex bolts, heavy hex bolts, and stud bolts, and provide superior strength and excellent performance in harsh environments. Well suited for high-pressure and high-temperature applications, these bolts find extensive use in aerospace, power generation, and petrochemical processes.
ASTM A453 GR 660 Class C Bolts contain primarily Nickel (24–27%), Chromium (13–17%), Molybdenum (1–1.5%), and smaller quantities of Titanium, Aluminum, and Iron. These bolts exhibit superior mechanical properties with a tensile strength of at least 895 MPa, yield strength of at least 585 MPa, and elongation of at least 15%. They have a density of approximately 7.9 g/cm³ and are able to sustain temperatures up to 704°C. With extreme resistance to oxidation, thermal stress, and creep, these bolts are designed for performance and durability in the most severe high-temperature conditions.
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 GR 660 Class C Bolts find widespread application in industries like aerospace, thermal power generation, oil and gas, chemical processing, and nuclear power. These bolts are best suited for bolting in turbines, exhaust systems, boilers, pressure vessels, and heat exchangers, where there is a need for high mechanical strength and thermal stability. Their resistance to oxidation and durability under changing temperatures and mechanical stresses make them a first choice for critical assemblies demanding long-term reliability and safety in harsh conditions.
The Fasteners Mart provides trustworthy and timely shipping of ASTM A453 GR 660 Class C Bolts throughout the world. The products are carefully packed using long-lasting materials like wooden crates, bubble wrapping, and corrugated boxes to avoid damage during transit. Tailor-made packaging options can be provided in accordance with customers’ requirements.
The Fasteners Mart is a leading manufacturer and supplier of high-quality fasteners in Mumbai, India, with over 8 years of experience serving global industries.
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