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Mira Fasteners is a well-respected manufacturer and supplier of ASTM A193 B8M Bolts, proudly based in Kuala Lumpur, Malaysia. These bolts are made from AISI 316 stainless steel, which is renowned for its exceptional resistance to corrosion, particularly in environments rich in chloride and marine conditions. They find their way into various industries, including oil and gas, chemical processing, power generation, and marine engineering. Mira Fasteners is committed to ensuring that every bolt adheres to rigorous international standards for quality, strength, and durability, serving clients across Malaysia and Southeast Asia.
The ASTM A193 B8M Bolts are crafted from molybdenum-enhanced austenitic stainless steel, providing outstanding resistance to pitting, crevice corrosion, and exposure to harsh chemicals. With a minimum tensile strength of 515 MPa, these bolts are reliable even in high temperatures and corrosive settings. The added molybdenum enhances their stability and strength in chloride environments, making B8M bolts perfect for demanding industrial applications that require both mechanical strength and corrosion resistance.
| 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 B8M Bolt
|
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.
You’ll often find these bolts in pressure vessels, heat exchangers, chemical reactors, and marine equipment, where durability and resistance to corrosion are essential. Typically, they are paired with ASTM A194 Grade 8M nuts, offering secure and long-lasting fastening solutions for critical assemblies. Mira Fasteners provides ASTM A193 B8M Bolts in a range of sizes, thread forms, and finishes, all tailored to meet various operational needs. Their strength, corrosion resistance, and reliability make them a top choice for challenging industrial bolting applications.
Sheetal fasteners contain careful packages of ASTM A193 B8M bolts to ensure safe delivery and optimal quality. Each bolt is individually inspected and carefully wrapped to prevent damage during transport. We use durable protective coatings and fasteners to keep the bolt intact. Custom packaging is available to meet specific needs. Our commitment to quality extends through our packaging, ensuring that your fasteners arrive in perfect condition, ready for immediate use.
Mira Fasteners is a leading manufacturer and supplier of high-quality fasteners in Kuala lumpur, Malaysia, with over 8 years of experience serving global industries.
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