ASTM A193 B8T Nuts

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ASTM A193 B8T Nuts Manufacturer and Supplier in Delhi, India

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Punit Fasteners, a well-known manufacturer and supplier located in Delhi, India, specializes in high-performance ASTM A193 B8T Nuts that are perfect for tough applications in corrosive and high-temperature settings. Crafted from Type 321 stainless steel, this titanium-stabilized austenitic alloy provides exceptional resistance to intergranular corrosion. Our B8T nuts are precision-engineered and adhere to ASTM A193 specifications, making them ideal for bolted joints in industries like chemical processing, oil & gas, power plants, and marine applications. With a commitment to consistent quality, precise dimensions, and timely delivery, Punit Fasteners guarantees dependable fastening solutions for critical operations both locally and globally.

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ASTM A193 B8T Nuts are constructed from Type 321 stainless steel, which includes 17–20% chromium, 9–13% nickel, and titanium (at least five times the carbon content) for stabilization. This unique composition boosts resistance to carbide precipitation and intergranular corrosion, particularly during extended exposure to high temperatures. These nuts boast a minimum tensile strength of 515 MPa and a yield strength of 205 MPa. Their remarkable mechanical stability, oxidation resistance, and thermal endurance make them perfect for high-stress, high-temperature bolted connections, especially in flanged joints and critical pressure systems.

ASTM A193 B8T Nuts 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 B8T Nuts 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
B8M Class 2	Up to 3/4	110	95	15	45
	7/8 – 1	100	80	20	45
	1-1/8 – 1-1/4	95	65	25	45
	1-3/8 – 1-1/2	90	50	30	45

ASTM A193 B8T Nuts Specifications

Material	Specification	Standards	Size	Length
ASTM A193 B8T Nuts	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 B8T nuts are high-strength fasteners made of stabilized austenitic stainless steel, ideal for use in high-temperature corrosive environments. They are commonly used in electrical, petrochemical, and marine applications, including heating. Resistance to chemical stress is important. Their applications include protecting flanges, piping systems and pressure vessels. The B8T designation ensures superior abrasion and corrosion resistance, making these frames suitable for critical high-pressure assemblies that require reliable performance under demanding conditions.

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Types of ASTM A193 B8T Nuts

ASTM A193 B8T Nuts find their place in various industrial applications that require both corrosion resistance and high thermal stability. They are particularly suited for flanged connections, pipe fittings, pressure vessels, boilers, and reactors in industries such as petrochemical, oil & gas, power generation, pharmaceuticals, and marine engineering. These nuts excel in environments where heat and chemicals are present, making their resistance to intergranular attack essential. Punit Fasteners offers B8T nuts in a diverse range of sizes and thread configurations to meet your specific needs.