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Yasin Fasteners, located in Istanbul, Turkey, makes and supplies ASTM A193 B8 fasteners, known for their reliability, strength, and resistance to corrosion. Made from austenitic stainless steel, these fasteners are commonly used in environments with high temperatures and pressure. Yasin Fasteners guarantees that each B8 fastener meets ASTM standards, which ensures consistent performance and durability. With modern production technology and careful quality control, the company provides fastening solutions that endure tough conditions. Their ASTM A193 B8 fasteners are trusted in industries like petrochemical, construction, energy, and marine for their proven ability to maintain integrity under challenging mechanical and corrosive conditions.
ASTM A193 B8 fasteners are made from AISI 304 stainless steel, containing 18–20% chromium and 8–11% nickel. They have a tensile strength of about 515–750 MPa, yield strength of 205 MPa, and elongation of 30–40%. The austenitic structure offers excellent ductility, toughness, and corrosion resistance in oxidizing environments. They maintain stability at high temperatures, making them suitable for high-pressure bolting applications. B8 fasteners combine strength, weldability, and resistance to atmospheric corrosion, acids, and industrial chemicals, ensuring long-lasting durability in industries where secure fastening under stress is crucial.
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% |
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 |
Material |
Specification |
Standards |
Size |
Length |
ASTM A193 B8 Fasteners
|
IS
BS
ASTM
|
DIN, ISO, JIS, GB, IS, BS, ASTM |
M 02 to M 160
|
3 mm to 200 mm
|
To satisfy our clients needs by providing high quality products at competitive price as per the schedule and to maintain long term relationship with our clients.
ASTM A193 B8 fasteners from Yasin Fasteners are commonly used in petrochemical plants, power generation, and chemical processing industries. They find application in pressure vessels, piping systems, and flanges that handle corrosive fluids at high pressure. The construction sector uses them for bridges, infrastructure, and architectural structures. Marine industries depend on their corrosion resistance in saltwater, while food and pharmaceutical industries use them in sanitary equipment. Their reliability in high-stress and corrosive environments makes them essential for critical bolting applications that require long service life, consistent strength, and reliable fastening performance in mechanical and environmental challenges.
ASTM A193 B8 fasteners from Yasin Fasteners are commonly used in petrochemical plants, power generation, and chemical processing industries. They find application in pressure vessels, piping systems, and flanges that handle corrosive fluids at high pressure. The construction sector uses them for bridges, infrastructure, and architectural structures. Marine industries depend on their corrosion resistance in saltwater, while food and pharmaceutical industries use them in sanitary equipment. Their reliability in high-stress and corrosive environments makes them essential for critical bolting applications that require long service life, consistent strength, and reliable fastening performance in mechanical and environmental challenges.
Yasin Fasteners is a leading manufacturer and supplier of high-quality fasteners in Istanbul, Turkey, with over 8 years of experience serving global industries.
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