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ASTM A453 GR 660 Class A Fasteners are robust, heat-treated alloy steel fasteners crafted for high-pressure and high-temperature industrial settings. Built to meet the rigorous ASTM A453 GR 660 Class A standards, these fasteners boast impressive tensile strength, toughness, and durability, even in the harshest conditions. Suppliers like Aria Fasteners in Hamilton, New Zealand, guarantee precise threading, consistent dimensions, and top-notch quality. These fasteners are perfect for securing pressure vessels, flanges, pipelines, and structural assemblies, ensuring reliable, long-lasting performance in power plants, chemical processing facilities, and other industrial environments that demand high mechanical integrity.
Made from alloy steel, ASTM A453 GR 660 Class A Fasteners include elements like chromium, molybdenum, and vanadium, which boost their tensile strength, toughness, and resistance to creep at elevated temperatures. They maintain their shape and resist deformation even under heavy loads. The heat treatment process further enhances their microstructure, allowing these fasteners to endure high-stress, high-temperature situations. This blend of mechanical strength and thermal resistance makes them ideal for critical industrial applications where standard carbon steel or stainless steel fasteners might not hold up.
Material | Dimensions | Standards | Size | Length |
ASTM A453 GR 660 CLASS A 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 |
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ASTM A 453 GR 660 Class A fasteners are widely used in high-temperature environments such as power plants, petrochemical plants, and aerospace applications Ideal for critical components requiring high strength and power under extreme conditions in. These fasteners are commonly used in steam turbine components, pressure vessels and high pressure valves. Resistance to thermal expansion and corrosion makes them suitable for demanding applications where reliability and performance are important.
You’ll find ASTM A453 GR 660 Class A Fasteners commonly used in petrochemical plants, power generation units, chemical processing facilities, and offshore platforms. They excel at securing flanges, heat exchangers, pressure vessels, pipelines, and heavy machinery that operate under extreme temperature and pressure. These fasteners ensure joint integrity, prevent loosening, and deliver long-lasting performance in aggressive industrial environments. They’re also utilized in industrial manufacturing, infrastructure projects, and high-temperature mechanical applications.
Aria Fasteners is a leading manufacturer and supplier of high-quality fasteners in Hamilton, New Zealand, with over 8 years of experience serving global industries.
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