ASTM A 453 GR 660 Class B Fasteners Manufacturer and Supplier in Dubai, UAE
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Majid Fasteners is a leading manufacturer and supplier of high-performance ASTM A453 Grade 660 Class B fasteners in Dubai, UAE, serving diverse industries with precision-engineered solutions. Renowned for exceptional quality, durability, and reliability, our products are designed to withstand extreme temperatures, high pressure, and demanding operational environments. With advanced manufacturing capabilities and strict quality control, we deliver premium bolts, nuts, studs, and custom fastener solutions that meet global standards. Majid Fasteners is committed to timely delivery, competitive pricing, and unmatched customer support, making us a trusted partner for clients across the energy, petrochemical, marine, and construction sectors.
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What is ASTM A 453 GR 660 Class B Fasteners?
ASTM A453 Grade 660 Class B Fasteners are high-temperature alloy components engineered for superior strength and durability. Composition typically includes iron, chromium, nickel, titanium, and trace elements that enhance corrosion resistance and thermal stability. These fasteners exhibit excellent mechanical properties, including high tensile strength, superior yield strength, and exceptional stress-rupture performance, even in extreme environments. Designed to maintain integrity under elevated temperatures, they ensure long-lasting reliability. As precision-engineered products, ASTM A453 GR 660 Class B bolts, nuts, and studs are widely used in petrochemical, power generation, and high-pressure applications.
ASTM A 453 Gr 660 Heavy Hex B Fasteners, Gr 660 Class B Hex Fasteners, Gr 660 Lock B Fasteners, ASTM A453 Self Locking B Fasteners, ASTM A453 Grade 660 Class B Fasteners Stockist in Dubai, UAE.
ASTM A 453 GR 660 Class B Fasteners Specifications
Material | Dimensions | Standards | Size | Length |
ASTM A453 GR 660 CLASS B Fasteners | ASME B18.2.1, B18.3 | ASTM, ASME | M 02 to M 160 | 3 mm to 200 mm |
ASTM A 453 GR 660 Class B Fasteners 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 B 453 GR 660 Class A Fasteners 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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ASTM A 453 Gr 660 Heavy Hex B Fasteners, Gr 660 Class B Hex Fasteners, Gr 660 Lock B Fasteners, ASTM A453 Self Locking B Fasteners, ASTM A453 Grade 660 Class B Fasteners Stockist in Dubai, UAE.
ASTM A 453 GR 660 Class B Fasteners Uses
ASTM A453 Grade 660 Class B fasteners are widely used in high-temperature and high-pressure environments demanding exceptional strength and oxidation resistance. Common applications include gas turbines, steam turbines, heat exchangers, pressure vessels, and petrochemical processing units. Their stability at elevated temperatures makes them ideal for power generation, aerospace assemblies, and refinery equipment. They are also used in flanged joints, valve components, and bolting systems exposed to thermal cycling. Because they resist creep, stress relaxation, and corrosion, these fasteners ensure long-term reliability in critical operations across various demanding industries.
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