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Mira Fasteners is a reliable manufacturer and supplier of ASTM A453 Grade 660 Class D Bolts, proudly based in Kuala Lumpur, Malaysia. They’ve built a solid reputation for providing high-temperature, high-strength bolting solutions, catering to demanding industries like power generation, oil & gas, petrochemical, and aerospace. These bolts are specifically designed to perform well over the long haul, even under elevated temperatures and pressures. With a focus on precision manufacturing, strict quality control, and compliance with international standards, Mira Fasteners delivers trustworthy bolting solutions for critical applications across Malaysia and Southeast Asia. Their dedication to reliability, consistency, and prompt service has earned them a strong reputation in the industry.
ASTM A453 Grade 660 Class D Bolts are crafted from an austenitic stainless steel alloy that includes nickel (24–27%), chromium (13–17%), molybdenum (1.5–2.5%), and iron, along with trace elements to boost performance. These bolts undergo solution treatment and precipitation hardening, achieving a minimum tensile strength of 895 MPa and a yield strength of 585 MPa. Class D is particularly optimized for enhanced stress rupture and creep resistance at high temperatures, reaching up to 704°C (1300°F). Their mechanical integrity and resistance to oxidation make them perfect for extended exposure to thermal cycling and fluctuating pressures in high-demand systems.
Material | Dimensions | Standards | Size | Length |
ASTM A453 GR 660 CLASS D 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 Grade 660 Class D Bolts widely used in high-temperature settings, including steam turbines, pressure vessels, heat exchangers, flanges, and reactor systems. In the oil and gas sector, they are essential for securing components that face thermal stress, high pressure, and corrosive environments. Their ability to maintain dimensional and structural stability under tough conditions makes them a go-to choice for power plants, refineries, and aerospace assemblies. These bolts ensure exceptional service life, reduce downtime, and provide safe, secure fastening in mission-critical applications where standard fasteners might not hold up.
At Mira Fasteners, we prioritize the safety and quality of our ASTM A 453 GR 660 Class D bolts during shipping. Each bolt is thoroughly inspected and individually tightened to prevent damage. We pack them in hard labeled boxes that clearly show product details and quantities. These meticulous packaging ensures that our bolts remain in pristine condition, ready to meet the demanding demands of high temperatures and high pressures upon arrival the solution of the.
Mira Fasteners is a leading manufacturer and supplier of high-quality fasteners in Kuala lumpur, Malaysia, with over 8 years of experience serving global industries.
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