ASTM A453 Grade 660 Class C Bolts, A286, Square, Hex Bolts, Hex Cap Screws, Lag Screws, Hex Socket and Spline Socket Screws, Studs, Stud Bolts, Threaded Rod, DIN 2510/939/940, ASME B18.2.1, B18.3, B1.1 Inch Unified Threads
ASTM A453 Grade 660 Class C bolts are Iron Based Super Alloy bolts manufactured from iron-nickel-chromium alloy with additions of molybdenum and titanium. A453 660 Class C Bolts maintain good strength and oxidation resistance at temperatures up to 1300ºF. Torqbolt is a prominent A453 gr 660 Class C bolt supplier in India.
Precipitation Hardening Steel
Solution Annealed and Precipitation Hardened
– Finish: Pickling and Passivation
– Marking: TorqBolt | BEA 660C
– Type: Cold Forged, Hot Forged, Bar Stock Machined
|Dimensions||ASME B18.2.1, B18.3|
|Threads||Unless otherwise specified, the threads shall be rolled or cut at the option of TorqBolt|
|Threads Configuration||ASME B1.1 2A/3A Inch Unified Threads and B1.13M 6h Metric Coarse Threads|
|Melt Origin||East Europe/South America/Korea/Japan|
|Product Origin||Made in India|
|Certification||Dual Certified As per ASTM & ASME Codes|
|Additional Certifications||PED 97/23/EC Certified, Merkblatt AD 2000 W2 Certified|
|Additional Requirements||NACE MR0103/MR0175/ISO 15156 Compliance|
|Mandatory Requirements||Free from Mercury & Radioactive Contamination|
ASTM A453 660 Class C Bolts Specification
ASTM A453 Grade 660 Class C Bolts, Nuts, Screws and Studs consist of 24-27% nickel content with additions of 13.5-16% chromium content to sustain high temperature bolting with austenite stainless steel type Co-efficient of expansion. A453 660 Cl C Bolts are always oil quenched and double aged unlike Grade 660 A, B & D Bolting. To achieve higher tensile stress & yield strength A453 Grade 660 Class D Boltings are aged twice at around 70 degrees Celsius lower than the first ageing treatment. Unlike Gr 660 Class c Bolts, Class d Bolts are always liquid quenched to gain higher yield strength.Grade 660 Class d do not require stress-rupture and shall be stamped NR. The maximum permissible hardness for 660 D Bolting is 37 HRC.
Finishing Process for ASTM A453 Gr 660C Stud Bolts, Bolts, Screws Threads for studs, screws and bolts made of A453 Gr 660C can be formed by machining or rolling from Pitch Diameter. Keeping the heat treatment condition of A453 Grade 660C, Threads may be formed after precipitation hardening or after solution annealing but prior to precipitation age hardening.The following Type designations of A453 660C Studs & Bolts are as follows:
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TorqBolt is a well known stockist of Pitch Dia ASTM A453 Grade 660 Class C Round Bars from ¼-4 & 6mm 100mm in 1 meter, 3 meter & 6 Meter lengths. All Threaded Bars are Magnetic Particle Examined in accordance with ASTM E 709 with Indications & Cracks within 3% of The Diameter as specified in ASTM A453 Specification . ATI A286 is a registered trademark of ATI Metals.