Home > ASTM A 453 GR 660 Class D Stud Bolts
Majid Fasteners is a well-known producer and distributor of quality industrial fastener in Dubai, United Arab Emirates, with its products being of superior quality to the global engineering requirements. We are the producer of ASTM A453 Grade 660 Class D stud bolt, specialized heat resistant, high-strength fasteners that are used in the extreme temperature and pressure environment of the power generation, petrochemical, and refinery industries. Having a high level of attention to precision, durability, and customer satisfaction, the solutions of fastening offered by Majid Fasteners are reliable in terms of the safety and efficiency of the functioning of the essential industrial machinery.
Stud bolts that conform to ASTM A453 Class D (660) are made with a high-strength alloy based on austenitic precipitation-hardened materials (like A-286). The chemical makeup of these products is similar; they have 24%-27% Nickel, 13.5%-16% Chromium, 1%-1.5% Molybdenum, 1.9%-2.35% Titanium, and smaller amounts of Vanadium and Boron, with Iron as the main element. The nickel, chromium, molybdenum, titanium, and other alloying elements allow for exceptional high temperature, strength and corrosion resistance. The mechanical properties of these stud bolts include a minimum of 720 MPa (106 ksi) for tensile strength and 585 MPa (85 ksi) for yield strength and also good ductility with an elongation of 18%, as well as outstanding creep resistance, enabling reliable service life even in extreme conditions.
|
Material |
Dimensions |
Standards |
Size
|
Length |
|
ASTM A453 GR 660 CLASS D Stud Bolts
|
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 D stud bolts find wide application in high temperature, high pressure and corrosive conditions where the long term stability and strength is very important. They are used perfectly well in power generation systems such as gas turbines, steam turbines, boilers, heat exchangers, and in high-temperature flanges. These stud bolts are also extensively utilized in petro chemical plants, oil and gas refineries, chemical processing units and pressure vessels subject to thermal cycling and oxidation. They are good in creep resistance and durability and thus can be used in critical assemblies where to assure safe, reliable and efficient service, in the challenging operation of the industry.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
