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Hazlewood Fasteners is a reliable manufacturer and supplier of ASTM A453 Grade 660 Class B Bolts in Canberra, Australia, offering high-performance fastening solutions for extreme service conditions. These bolts are specially engineered from high-strength austenitic stainless steel designed to withstand high temperature and high pressure environments. ASTM A453 GR 660 Class B Bolts are widely used in turbines, power generation plants, pressure vessels, and petrochemical processing equipment, where superior strength and accuracy are crucial. We provide these bolts in various sizes, thread types, and finishes, ensuring consistent durability, corrosion resistance, and long operational life in demanding industrial environments.
ASTM A453 GR 660 Class B Bolts are composed of Nickel-Chromium-Iron alloy with a balanced addition of Titanium, Manganese, and Silicon which enhances stability and high-temperature endurance. These bolts offer high tensile strength, exceptional yield strength, and excellent creep resistance, making them ideal for service temperatures up to 700°C (1300°F). They exhibit strong resistance to oxidation, stress corrosion cracking, and scaling under prolonged heat exposure. This grade maintains its mechanical integrity under severe mechanical loads, making it dependable in applications requiring both thermal strength and corrosion protection.
Material | Dimensions | Standards | Size | Length |
ASTM A453 GR 660 CLASS B 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 |
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 A453 GR 660 Class B Bolts are primarily used in steam turbines, gas turbines, power generation boilers, pressure vessels, high-pressure flanges, turbine casings, heat exchangers, and refinery processing units. Their ability to retain strength at elevated temperatures makes them highly suitable for thermal power plants, nuclear power facilities, and petrochemical processing systems. They are also utilized in aerospace equipment and high-performance machinery where precision and reliability are vital. These bolts ensure secure fastening, minimal maintenance, and long-term stability, especially in systems exposed to continuous heat cycles, vibration, and mechanical stress.
At Hazlewood Fasteners ASTM A 453 GR 660 Class B Bolts are carefully fastened for quality and protection during movement. Each bolt is securely wrapped with protective coatings to prevent corrosion. They are packaged in sturdy waterproof boxes or boxes labeled for easy identification and handling. Customized packaging is available to meet specific requirements, ensuring a safe and convenient delivery to our customers in Canberra, the Australia, and beyond.
Hazlewood Fasteners is a leading manufacturer and supplier of high-quality fasteners in Canberra, Australia, with over 8 years of experience serving global industries.
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