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ASTM A453 Grade 660 Class B bolts are premium fasteners known for their exceptional strength and corrosion resistance. Made from a high-performance alloy containing nickel and chromium, these bolts are designed to excel in demanding environments such as petrochemical plants, offshore platforms, and power generation facilities. Adhering to stringent ASTM standards, they provide reliable and durable performance in critical applications where secure fastening is essential. ASTM A453 Grade 660 Class B bolts offer superior mechanical properties and stability at high temperatures, making them indispensable for projects requiring high tensile strength and long-lasting durability in harsh conditions.
Material |
Standards |
Size
|
Length |
ASTM A453 GR 660 CLASS B Hex Bolts
|
DIN975 , ASTM A307 |
M6 to M52 & 1/4″ to 2″
|
1000mm to 3000mm & 1feet to 12feet
|
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 |
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 |
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We offer These ASTM A 453 GR 660 Class B Bolts as per DIN, ISO, JIS or ANSI Standard.
ASTM A 453 GR 660 Class B Bolts applications are as diverse as the industries they serve driven primarily by the aerospace, railway, construction and automotive industries with petrochemical, nuclear, medical, Oil & Gas, Chemical, Pharmaceutical, Food & Beverage, Nuclear, Thermal Power plants, Paper and Pulp, marine and mining, etc.
ASTM A453 Grade 660 Class B bolts are generally resistant to galvanic corrosion due to their alloy composition, which includes corrosion-resistant elements like nickel and chromium. However, in environments prone to galvanic corrosion, such as marine settings, it’s advisable to use proper material pairing and surface treatments to further enhance their resistance and ensure long-term durability. Regular maintenance and adherence to industry standards also help maintain their resistance over time.
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