ASTM A 453 GR 660 Class A Fasteners

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Mumbai-based Fasteners Mart is a well-known industrial fasteners manufacturer and exporter that offers high-grade industrial fasteners, providing effective fastening solutions for critical uses globally. One of its premium products is ASTM A453 Grade 660 Class A Fasteners, which is produced using high-strength austenitic stainless steel. It is available in different shapes like bolts, nuts, washers, screws, and stud bolts. Astm a453 gr 660 class a fasteners are suitable for applications in high-temperature and high-pressure settings with enhanced mechanical properties and oxidation resistance. Their applications include aerospace, power generation, and petrochemicals.

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ASTM A453 GR 660 Class A Fasteners contain Nickel (24–27%), Chromium (13–17%), Molybdenum (1–1.5%), and traces of Titanium, Aluminum, and Iron. They have a tensile strength of about 760 MPa and a yield strength of about 450 MPa with elongation of about 18%. They have good mechanical stability at high temperatures up to 704°C and a density of about 7.9 g/cm³. These characteristics render them extremely long-lasting and suitable to operate under efficiently in thermal cycling and industrious high-stress conditions.

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

ASTM A 453 Gr 660 Heavy Hex A Fasteners, Gr 660 Class A Hex Fasteners, Gr 660 Lock A Fasteners, ASTM A453 Self Locking V Fasteners, ASTM A453 Grade 660 Class A Fasteners Stockist in Mumbai, India.

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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ASTM A453 GR 660 Class A Fasteners are widely utilized in industries that function under extreme pressure and temperature, such as aerospace, thermal power plants, petrochemicals, oil and gas, and refinery operations. They are best suited for critical parts like turbines, pressure vessels, boilers, exhaust systems, and heat exchangers. These fasteners are specially designed to resist creep, thermal fatigue, and oxidation, providing long-term stability and performance in mission-critical systems where durability and reliability are critical.

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Types of ASTM A 453 GR 660 Class A Fasteners

The Fasteners Mart provides safe and timely delivery of ASTM A453 GR 660 Class A Fasteners worldwide. Products are packaged carefully with high-quality materials such as wooden crates, bubble wrap, and corrugated boxes to prevent transit damage. Custom packaging is also available according to client requirements.