ASTM A 453 GR 660 Class A Fasteners

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ASTM A 453 GR 660 Class A Fasteners Manufacturer and Supplier in Tunis, Tunisia

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Lina Fasteners is a trusted name in the manufacturing and supply of premium ASTM A453 Grade 660 Class A fasteners, based in Tunis, Tunisia. They cater to critical industrial applications with top-notch production facilities and a strong commitment to quality control. This ensures that their products deliver consistent performance, precise dimensions, and meet international standards. Designed to handle high temperatures, heavy loads, and tough service conditions, Lina Fasteners’ offerings are all about reliability. Their expertise and dedication to timely delivery make them a go-to partner for industries in need of high-strength, heat-resistant fastening solutions.

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The ASTM A453 Grade 660 Class A fasteners are crafted from a specialized precipitation-hardening iron-nickel-chromium alloy, which includes around 24–27% nickel and 13–16% chromium, along with some molybdenum, titanium, aluminum, and controlled carbon. This unique blend gives them impressive tensile and yield strength, outstanding toughness, and decent ductility. Mechanically, Class A fasteners are known for their reliable strength, oxidation resistance, and stability at high temperatures, plus they offer good creep and stress-rupture resistance for prolonged high-temperature use.

ASTM A 453 GR 660 Class A Fasteners Specifications

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

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ASTM A 453 GR 660 Class A 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 A 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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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 find ASTM A453 GR 660 Class A fasteners in applications that demand strength and corrosion resistance at elevated temperatures. They’re typically used in power generation equipment, steam and gas turbines, boilers, heat exchangers, and high-temperature piping systems. Additionally, they’re widely utilized in petrochemical plants, refineries, and chemical processing units where thermal cycling, oxidation resistance, and long-term reliability are essential. These fasteners play a crucial role in ensuring secure joint integrity and dependable performance, even in the harshest operating environments.

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Types of ASTM A 453 GR 660 Class A Fasteners

At Lina Fasteners, our ASTM A 453 GR 660 Class A Fasteners are meticulously packaged to ensure they arrive in optimal condition. Each fastener is individually inspected and packaged in durable, protective materials to prevent damage during transit. Our packaging includes clear labeling and handling instructions to ensure ease of use and compliance with safety standards. We offer various packaging options, including bulk and custom-sized packages, tailored to meet our clients’ specific needs and preferences.