ASTM A193 B8 CL2 Stud Bolts

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ASTM A193 B8 Class 2 stud bolts from Hazlewood Fasteners in Canberra, Australia, are designed for industries where uncompromising strength, resilience, and corrosion resistance are mission-critical. These premium stainless-steel studs undergo strain hardening to deliver significantly enhanced tensile strength and exceptional fastening stability. Built to thrive in aggressive operating environments, they offer dependable performance in high-pressure, high-temperature, and corrosive systems across petrochemical, refinery, water treatment, and power-generation sectors. For projects demanding a fusion of structural integrity, operational reliability, and long-term endurance, our ASTM A193 B8 Class 2 stud bolts stand as engineering-grade excellence you can trust.

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ASTM A193 B8 Class 2 stud bolts are crafted from strain-hardened 304 stainless steel, featuring elevated chromium and nickel levels for superior corrosion resistance. Their Class 2 hardening process boosts tensile strength, yield strength, and stress-rupture resistance, making them fit for extreme service conditions. These studs exhibit excellent oxidation resistance, reliable ductility, precise thread geometry, and dependable preload retention under cyclic thermal and pressure loads. Their metallurgical refinement ensures consistent performance in corrosive plant media, high-temperature piping networks, and critical-duty bolting systems.

ASTM A193 B8 CL2 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 CL2 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 CL2 Stud Bolts Specifications

Material	Specification	Standards	Size	Length
ASTM A193 B8 CL2 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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ASTM A193 B8 Class 2 stud bolts are trusted in critical mechanical and chemical processing systems requiring dependable, high-strength stainless fastening. Key applications include heat-exchanger assemblies, refinery piping, steam service lines, boiler equipment, pressure vessels, cryogenic systems, desalination plants, food-grade processing lines, and chemical tank flanges. They are frequently paired with stainless nuts and washers for durability in corrosive media and elevated temperatures. Whether reinforcing pressure-boundary joints, anchoring thermal systems, or securing industrial components in harsh service environments, these Class 2 studs deliver rock-solid performance where engineering reliability is the benchmark.

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Types of ASTM A193 B8 CL2 Stud Bolts

We ensure that the ASTM A193 B8 CL2 Stud Bolts are installed with the utmost care. Each bolt is thoroughly inspected and sealed with durable, waterproof material to prevent damage during transport. Our packaging includes clear labeling to make it easy to find and follow. Whether you need a bulk shipment or a customized packaging solution, we guarantee that your bolts will arrive in perfect condition, ready for immediate use in your application of the importance of the.