Home > ASTM A 453 GR 660 Class A Stud Bolts
Majid fasteners is a top producer and distributor of quality industrial fasteners in Dubai, UAE, and has a reputation of producing precision-built products at international standards. Our specialists are specialized in the ASTM A453 Grade 660 Class A stud bolts, which are fasteners that can be used in high-temperature and high-stress applications in power generation as well as petrochemical and oil and gas industries. Majid Fasteners has a great emphasis on durability, accuracy, and customer satisfaction, thus, guaranteed quality fastening solutions to facilitate safe and efficient running of the important industrial machinery.
Fasteners (studs) manufactured in accordance with ASTM A453 Grade 660 Class A, are made from an austenitic, precipitation-hardened, high-strength alloy that has similarities to A-286. Typically contains Nickel (24–27%), Chromium (13.5–16%), Molybdenum (1–1.5%), Titanium (1.9–2.35%), very small quantities of Vanadium and Boron, with Iron making up the remainder. The alloying elements provide the Alloy with superior strength, good resistance to corrosion, and stability at elevated temperatures. Mechanical Properties: The Alloy has a minimum tensile strength of 895 MPa, yield strength of 585 MPa, elongation of 15% and a high degree of creep resistance to withstand the thermal and pressure environments encountered during use.
Material | Dimensions | Standards | Size | Length |
ASTM A 453 GR 660 Class A Studbolts | ASME B18.2.1, B18.3 | ASTM, ASME | M 02 to M 160 | 3 mm to 200 mm |
|
Element |
Content |
|---|---|
|
Carbon |
0.08 max |
|
Manganese |
2.00 max |
|
Phosphorus, max |
0.040 max |
|
Sulfur, max |
0.030 max |
|
Silicon |
1.00 max |
|
Nickel |
24.0-27.0 |
|
Chromium |
13.5-16.0 |
|
Molybdenum |
1.00-1.50 |
|
Tungsten |
– |
|
Titanium |
1.9-2.35 |
|
Aluminum |
0.35 max |
|
Vanadium |
0.10-0.50 |
|
Boron |
0.001-0.010 |
| Tensile Strength/Ultimate Tensile Stress (UTS) – (Mpa) | 895 min |
| Yield Strength/Proof Stress(0.2% Offset) (YS) – (Mpa) | 585 min |
| Elongation in 4D (El) | 15 |
| Reduction | 18 |
ASTM A453 Grade 660 Class A stud bolts are common in the activities that need high levels of strength, resistance to heat and long durability. These are designed to fit turbine housings, high-temperature flanges, boilers and steam systems and pressure vessels. Power generation, petrochemical, oil and gas, and chemical processing industries are some of the industries that use these bolts due to the critical operations that take place and are subjected to extreme thermal and mechanical stress. Their high resistance to oxidation, creep and corrosion thus make them ideal in fastening parts in a heat exchanger, reactor assemblies and refinery equipments to give safe, stable and efficient industrial operation.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
