ASTM A 453 GR 660 Class A Bolts Manufacturer and Supplier in Dubai, UAE
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Majid Fasteners is one of the largest manufacturers and suppliers of high-quality industrial fasteners based in Dubai, United Arab Emirates. Known for its high-quality and accuracy, Majid Fasteners manufactures ASTM-A453 grade 660 class A bolts specifically designed for extremely high strength, high corrosion resistance, and for use in very harsh environments. The company’s bolts are used in a variety of industries, including but not limited to power generation, petroleum, and heavy engineering. Because of their exceptional quality and ability to perform in the most demanding applications, Majid Fasteners’ bolts meet all international standards and provide the customer with the longest possible service life. The company prides itself on providing the highest quality of products available, as well as providing the best customer service.
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What is ASTM A 453 GR 660 Class A Bolts?
Grade 660, Class A bolts are made from high-strength alloy steel and designed for applications that require high-temperature, high-pressure fasteners. The chemical makeup of Grade 660, Class A bolts is typically composed of elements such as Carbon, Manganese, Chromium, Nickel and Molybdenum providing an excellent combination of corrosion resistance and service life. Grade 660, Class A Bolts have an expected tensile strength between 930 – 1080 MPa and yield strength of approximately 640 MPa, ensuring a successful performance when used under tension. Due to the good elongation, hardness and fatigue resistance, ASTM A453 Grade 660 Class A bolts are ideal for critical service applications in the power generation, petro-chemical and heavy engineering industries.
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ASTM A 453 GR 660 Class A Bolts Specifications
Material | Dimensions | Standards | Size | Length |
ASTM A453 GR 660 CLASS A Bolts | ASME B18.2.1, B18.3 | ASTM, ASME | M 02 to M 160 | 3 mm to 200 mm |
ASTM A 453 GR 660 Class A Bolts Chemical Composition
|
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 |
ASTM A 453 GR 660 Class A Bolts Mechanical Properties
| 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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Types of ASTM A 453 GR 660 Class A Bolts
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ASTM A 453 GR 660 Class A Bolts Uses
ASTM A453 Grade 660 Class A Bolts are utilized in various industries requiring heat-resistant/high-strength fasteners; among the industries that utilize ASTM A453 GR 660 Class A Bolts are: Power Generation, Petrochemical Industry, Chemical Processing, Heavy Engineering, and wherever parts are subjected to high temperatures/high pressures.The applications using ASTM A453 GR 660 Class A Bolts would be: Pressure Vessels, Heat Exchangers, Steam Turbines, and Nuclear Reactors. By utilizing ASTM A453 GR 660 Class A Bolts in critical applications, these applications are secured and remain connected over time; and provide excellent corrosion resistance, as well as mechanical strength are suitable for use on offshore platforms, industrial machinery, and on structures in extreme environments. ASTM A453 GR 660 Class A bolts are trusted to provide reliable, safe, and long-term performance in numerous critical industrial environments.
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