ASTM A453 GR 660A Bolts, ASTM A453 GR 660A Stud Bolts, Heavy Hex Bolts & 660A Bolting Supplier in Mumbai, India
Unifit Metal Alloys is a manufacturer, supplier, stockist and exporter of ASTM A453 GR 660A Bolts in Mumbai, India, supplying high-performance stainless steel bolting components for elevated-temperature equipment, pressure assemblies, flanges, valves and industrial piping. Grade 660A is a precipitation-hardening austenitic stainless steel grade developed for applications where good mechanical strength and dependable performance are required at elevated temperatures. We supply different diameters, lengths, thread forms and configurations for standard and customized requirements.
ASTM A453 GR 660A Bolts are manufactured and heat-treated to develop the required mechanical properties for demanding fastening applications. The alloy provides a useful combination of strength, corrosion resistance and resistance to high-temperature service conditions. These bolts are commonly used in flanged connections and pressure-containing assemblies where maintaining reliable clamping force during prolonged operation is important.
ASTM A453 GR 660A Bolts, ASTM A453 GR 660A Stud Bolts, Heavy Hex Bolts & 660A Bolting Manufacturer and Supplier in Mumbai, India
Grade 660A bolting is suitable for power-generation equipment, turbines, petrochemical plants, refineries, chemical-processing systems, heat exchangers, pressure vessels, high-temperature piping and industrial machinery. Its precipitation-hardening characteristics make it suitable for applications where conventional stainless steel bolting may not provide the desired strength at elevated operating temperatures.
At Unifit Metal Alloys, we supply ASTM A453 GR 660A Bolts in various sizes, lengths, thread configurations and surface finishes. We cater to maintenance requirements, fabrication work, bulk orders and industrial projects.
Get the Best Quote for ASTM A453 GR 660A Bolts. We Stock ASTM A453 GR 660A Bolts in Various Diameters, Lengths, Thread Sizes, Specifications and Surface Finishes. Contact Us Today for a Competitive Quote.
ASTM A453 GR 660A Bolts Specification & Dimensions
| Material | Precipitation-Hardening Austenitic Stainless Steel |
|---|---|
| Grade | ASTM A453 Grade 660A |
| Standard | ASTM A453 / ASME SA453 |
| Equivalent Grade | UNS S66286 / Alloy A-286 / 660 |
| Product Type | Hex Bolts, Heavy Hex Bolts, Stud Bolts, Screws, Threaded Rods and Custom Fasteners |
| Size Range | M6 to M100 | 1/4″ to 4″ | Custom Sizes Available |
| Length | 10 mm to 1000 mm | Custom Lengths Available |
| Thread Standard | UNC, UNF, UNEF, Metric, BSW, BSF and Custom Threads |
| Manufacturing Process | Cold Forged, Hot Forged, Machined and Thread Rolled |
| Heat Treatment | Solution Treated and Precipitation Hardened |
| Finish | Plain, Passivated, Pickled, Polished and Custom Finishes |
| Corrosion Resistance | Excellent Resistance to Oxidation and Corrosive Environments |
| Temperature Resistance | Suitable for Elevated-Temperature Applications |
| Application | Aerospace, Gas Turbines, Power Generation, Petrochemical, Chemical Processing, Oil & Gas and High-Temperature Industrial Equipment |
| Packaging | Cartons, Wooden Cases, Pallets, Bulk and Custom Packaging |
Chemical Composition for ASTM A453 GR 660A Bolts
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.08 max. |
| Manganese (Mn) | 2.00 max. |
| Silicon (Si) | 1.00 max. |
| Phosphorus (P) | 0.040 max. |
| Sulfur (S) | 0.030 max. |
| Chromium (Cr) | 13.50 – 16.00 |
| Nickel (Ni) | 24.00 – 27.00 |
| Molybdenum (Mo) | 1.00 – 1.50 |
| Titanium (Ti) | 1.90 – 2.30 |
| Vanadium (V) | 0.10 – 0.50 |
| Aluminum (Al) | 0.35 max. |
| Boron (B) | 0.003 – 0.010 |
| Iron (Fe) | Balance |
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Mechanical Properties of ASTM A453 GR 660A Bolts
| Property | ASTM A453 Grade 660A |
|---|---|
| Tensile Strength | 930 MPa min. |
| Yield Strength (0.2% Offset) | 620 MPa min. |
| Elongation | 20% min. |
| Reduction of Area | 30% min. |
| Hardness | 285 HBW max. |
Ready Stock of ASTM A453 GR 660A Bolts
ASTM A453 GR 660A Bolts Application Industries
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