ASTM A 453 GR 660 Class B Bolts

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ASTM A 453 GR 660 Class B Bolts Manufacturer and Supplier in Kinshasa, Congo

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MUKAU FASTENERS, located in Kinshasa, Congo, stands out as a top manufacturer and supplier of ASTM A 453 GR 660 Class B Bolts, specifically designed for high-performance industrial applications. These bolts are built to deliver outstanding strength, durability, and reliability even in the toughest conditions. Made in line with ASTM standards, they guarantee precise threading, accurate dimensions, and excellent mechanical performance. Perfect for high-temperature and high-pressure settings, MUKAU FASTENERS’ Class B bolts are the go-to choice for industries like petrochemical, power generation, and heavy engineering. Their sturdy design ensures secure fastening and long-lasting performance in critical applications.

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ASTM A 453 GR 660 Class B Bolts are made from premium alloy steel, with carefully controlled amounts of chromium, molybdenum, and carbon. They undergo heat treatment to achieve impressive tensile strength, usually around 950 MPa, along with high hardness and toughness. These bolts show exceptional resistance to fatigue, wear, and high-temperature stress, making them reliable performers in demanding industrial settings.

ASTM A 453 GR 660 Class B Bolts Specifications

Material	Dimensions	Standards	Size	Length
ASTM A453 GR 660 CLASS B Bolts	ASME B18.2.1, B18.3	ASTM, ASME	M 02 to M 160	3 mm to 200 mm

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ASTM A 453 GR 660 Class B 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 B 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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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 often find these bolts in pressure vessels, boilers, heat exchangers, and essential piping systems within the petrochemical, oil and gas, and power plant sectors. Their high strength and corrosion resistance make them perfect for high-temperature and high-pressure applications. Plus, they’re great for structural assemblies, heavy machinery, and industrial equipment where secure, long-lasting fastening is vital for safety and efficiency.

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Types of ASTM A 453 GR 660 Class B Bolts

At Mukau Fasteners ASTM A 453 GR 660 Class B Bolts are carefully fastened for quality and protection during movement. Each bolt is securely wrapped with protective coatings to prevent corrosion. They are packaged in sturdy waterproof boxes or boxes labeled for easy identification and handling. Customized packaging is available to meet specific requirements, ensuring a safe and convenient delivery to our customers in Kinshasa, the Congo, and beyond.