ASTM A193 B8 CL3 Stud Bolts

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ASTM A193 B8 CL3 Stud Bolts Manufacturer and Supplier in Tunis, Tunisia

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Lina Fasteners is a well-respected manufacturer and supplier located in Tunis, Tunisia, specializing in high-quality ASTM A193 B8 Class 3 Stud Bolts designed for tough high-temperature and corrosive environments. These stud bolts are crafted in line with ASTM standards, undergoing solution annealing and strain hardening to maximize strength within the B8 grade. Lina Fasteners prioritizes precision threading, strict dimensional control, and comprehensive quality inspections to ensure consistent performance. Their products are widely used in the oil and gas, petrochemical, chemical processing, and power generation sectors, providing reliable stud bolt solutions, exceptional durability, and prompt support for critical industrial applications.

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ASTM A193 B8 Class 3 Stud Bolts are made from austenitic stainless steel, comparable to Type 304, with carefully controlled levels of chromium and nickel. Class 3 fasteners undergo significant strain hardening, resulting in higher tensile and yield strength compared to Class 1 and Class 2. They boast excellent toughness, good ductility, and strong resistance to oxidation and general corrosion. These stud bolts maintain their mechanical integrity even at elevated temperatures and perform reliably under high stress and pressure.

ASTM A193 B8 CL3 Stud Bolts Chemical Composition

Element	B7	B8	B8M
Carbon	0.37 – 0.49%	0.08% max	0.08% max
Manganese	0.65 – 1.10%	2.00% max	2.00% max
Phosphorus, max	0.035%	0.045%	0.045%
Sulfur, max	0.040%	0.030%	0.030%
Silicon	0.15 – 0.35%	1.00% max	1.00% max
Chromium	0.75 – 1.20%	18.0 – 20.0%	16.0 – 18.0%
Nickel		8.0 – 11.0%	10.0 – 14.0%
Molybdenum	0.15 – 0.25%		2.00 – 3.00%

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ASTM A193 B8 CL3 Stud Bolts Mechanical Properties

Grade	Size	Tensile ksi, min	Yield, ksi, min	Elong, %, min	RA % min
B7	Up to 2-1/2	125	105	16	50
	2-5/8 – 4	115	95	16	50
	4-1/8 – 7	100	75	18	50
B8 Class 1	All	75	30	30	50
B8M Class 1	All	75	30	30	50
B8 Class 2	Up to 3/4	125	100	12	35
	7/8 – 1	115	80	15	35
	1-1/8 – 1-1/4	105	65	20	35
	1-3/8 – 1-1/2	100	50	28	45

ASTM A193 B8 CL3 Stud Bolts Specifications

Material	Specification	Standards	Size	Length
ASTM A193 B8 CL3 StudBolt	IS BS ASTM	DIN, ISO, JIS, GB, IS, BS, ASTM	M 02 to M 160	3 mm to 200 mm

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You’ll find ASTM A193 B8 Class 3 Stud Bolts commonly used in high-strength, high-temperature, and moderately corrosive settings. Typical applications include flanged joints, pressure vessels, boilers, valves, and heat exchangers. They are extensively utilized in oil refineries, petrochemical plants, chemical processing units, and power generation facilities. Their enhanced strength makes them ideal for high-pressure piping systems and critical equipment connections. These stud bolts ensure secure joints, a long service life, and dependable performance in demanding industrial conditions.

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Types of ASTM A193 B8 CL3 Stud Bolts

At Lina Fasteners, ASTM A193 B8 CL3 stud bolts are meticulously packaged to ensure optimal protection during transit and storage. Each bolt is individually wrapped in anti-corrosive material and securely placed in durable, custom-sized boxes to prevent damage. The packaging is clearly labeled with product specifications and handling instructions for easy identification. Our commitment to careful packaging helps maintain the integrity and quality of the fasteners, ensuring they arrive in perfect condition and ready for use.