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Mazin Fasteners is a reputable manufacturer and supplier of ASTM A453 Grade 660 Class C Stud Bolts, proudly based in Muscat, Oman. We specialize in providing high-performance fastening solutions tailored for demanding industries around the globe. Our focus is on precision manufacturing, rigorous quality control, and adherence to international standards. With state-of-the-art production facilities and a team of skilled technicians, we create stud bolts designed for high-stress and elevated-temperature applications. Our dedication to material traceability, consistent quality, and timely delivery has made us a go-to partner for projects in power generation, petrochemicals, and heavy engineering.
ASTM A453 Grade 660 Class C Stud Bolts are crafted from a specialized precipitation-hardened iron–nickel–chromium alloy, enhanced with controlled amounts of nickel, chromium, molybdenum, and aluminum. This unique blend offers impressive tensile and yield strength, along with excellent resistance to creep and oxidation at high temperatures. Class C stud bolts are designed to maintain stable hardness, good ductility, and dimensional stability even under prolonged thermal and mechanical stress. Their robust mechanical properties ensure reliable load-bearing performance and a long service life, even in the harshest operating conditions.
| Element | B6X |
| Carbon | 0 – 0.15% |
| Manganese | 0 – 1.00% |
| Phosphorus, max | 0 – 0.040% |
| Sulfur, max | 0 – 0.03% |
| Silicon | 0 – 1.00% |
| Chromium | 11.5 – 13.5% |
| Nickel | – |
| Molybdenum | – |
| Tensile Strength/Ultimate Tensile Stress (UTS) – (Mpa) | 620 |
| Yield Strength/Proof Stress(0.2% Offset) (YS) – (Mpa) | 485 |
| Elongation in 4D (El) | 15 |
| Reduction | 50 |
| Hardness – (BHN) | 0 – 262 |
|
Material |
Specification |
Standards |
Size
|
Length |
|
ASTM A193 B6X 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.
You’ll find ASTM A453 Grade 660 Class C Stud Bolts in a variety of high-temperature and high-pressure applications where maintaining strength over time is essential. They’re commonly used in steam and gas turbines, boilers, heat exchangers, pressure vessels, and power generation equipment. Additionally, these bolts are extensively utilized in petrochemical plants, refineries, and industrial processing systems that face thermal cycling, vibration, and sustained loads. They are particularly well-suited for critical flange connections and assemblies that demand exceptional creep and oxidation resistance.
Our ASTM A193 B6X Stud Bolts undergo thorough testing before dispatch, including Hardness, Chemical Analysis (Spectro Analysis), PMI Testing, Flattening, Micro and Macro Tests, Pitting Resistance, Flaring, and IGC Tests, ensuring exceptional performance. We also provide essential documentation such as commercial invoices, packing lists, Certificates of Origin, and Guarantee Letters. Additionally, third-party inspection certificates attest to the quality of our ASTM A193 B6X Stud Bolts for various applications, confirming their excellence and reliability.
Mazin Fasteners is a leading manufacturer and supplier of high-quality fasteners in Muscat, OMAN, with over 8 years of experience serving global industries.
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