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Aria Fasteners, located in Hamilton, New Zealand, is a reputable manufacturer and supplier of top-notch ASTM A453 GR 660 Class D Nuts, designed for high-strength, high-temperature, and critical industrial applications. With a strong focus on precision engineering and rigorous quality control, they adhere to international standards while serving various industries, including power generation, petrochemical, oil and gas, and chemical processing. Their nuts are known for outstanding mechanical performance, corrosion resistance, and long-lasting durability, even in the toughest environments. Thanks to their dedication to technical expertise, prompt delivery, and customer satisfaction, Aria Fasteners has earned a solid reputation as a reliable global supplier of premium ASTM fasteners.
ASTM A453 GR 660 Class D Nuts are crafted from high-strength alloy steel, specifically designed for applications that involve elevated temperatures and heavy loads. These nuts boast impressive tensile strength, hardness, and fatigue resistance, making them perfect for high-pressure and high-stress situations. The addition of alloying elements like chromium, molybdenum, and vanadium enhances their mechanical strength, thermal stability, and ability to resist deformation under load. Through heat treatment, these nuts achieve consistent properties, ensuring superior resistance to creep, stress corrosion, and thermal degradation. They are particularly well-suited for securing critical bolted connections in industries such as power generation, petrochemical, and chemical processing.
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.
ASTM A 453 GR 660 Class D nuts are crucial in high-stress, high-temperature applications. Commonly used in aerospace components, power generation equipment, and petrochemical processing, these nuts secure critical parts such as gas turbines, reactor vessels, and exhaust systems. Their exceptional strength and thermal resistance make them ideal for environments subject to extreme conditions. These nuts ensure reliable performance and safety in demanding industrial settings, maintaining structural integrity under severe operational pressures.
In various applications that demand high mechanical strength, corrosion resistance, and long-term reliability under extreme conditions, ASTM A453 GR 660 Class D Nuts are a popular choice. You’ll often find them installed in boilers, turbines, pressure vessels, flanged joints, heat exchangers, and structural assemblies within petrochemical plants, chemical processing units, and power generation facilities. Their remarkable resistance to creep, stress, and thermal degradation makes them an essential component in these demanding environments.
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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