ASTM A 453 GR 660 Class C Bolts

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ASTM A 453 GR 660 Class C Bolts Manufacturer and Supplier in Muscat, OMAN

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Mazin Fasteners has made a name for itself as a reliable manufacturer and supplier of ASTM A453 Grade 660 Class C Bolts in Muscat, Oman. They cater to essential industrial sectors throughout the Middle East and beyond. Specializing in high-performance fasteners, these products are built to withstand high temperatures and intense stress. With state-of-the-art manufacturing facilities and strict quality control measures in place, Mazin Fasteners guarantees top-notch product reliability. Their commitment to precision, material traceability, and consistent supply has made them a go-to partner for industries like power, petrochemicals, and heavy engineering.

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ASTM A453 Grade 660 Class C Bolts are crafted from a unique precipitation-hardened iron-nickel-chromium alloy, enhanced with nickel, chromium, molybdenum, and aluminum. This carefully controlled composition provides outstanding high-temperature strength, oxidation resistance, and creep resistance. The bolts boast impressive tensile and yield strength, stable hardness, and good ductility even under prolonged heat exposure. Their mechanical properties hold steady under cyclic loading and high temperatures, ensuring secure fastening, dimensional stability, and a long service life in challenging operating conditions.

ASTM A 453 GR 660 Class C Bolts Specifications

Material	Dimensions	Standards	Size	Length
ASTM A453 GR 660 CLASS C 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 C 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 C 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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You’ll find ASTM A453 Grade 660 Class C Bolts in a variety of applications where high strength and resistance to elevated temperatures are essential. They’re commonly used in gas and steam turbines, boilers, heat exchangers, pressure vessels, and power generation equipment. Additionally, these bolts are prevalent in petrochemical plants, refineries, aerospace assemblies, and high-temperature industrial machinery. They excel in joints that face continuous thermal stress, vibration, and heavy loads. Thanks to their excellent creep resistance and long-term stability, they’re a reliable choice for demanding environments.