Astm A453 Grade 660 Class D Round Bar Manufacturer In India Supplying Industrial Grade Bars With Dimensional Accuracy
| Size Range | 5 mm to 600 mm diameter |
|---|---|
| Length | 3-200mm |
| Standards | Astm, Asme, Din, Nf, Jis, En, Ios |
| Finished | Black, Bright, Cold Drawn, Polish, Polished, Centreless Ground |
ASTM A453 Grade 660 Class D Round Bar Manufacturer in India Supplying Certified Alloy Bars for Heavy Duty Engineering
Neptune Alloy is a leading ASTM A453 Grade 660 Class D Round Bar Manufacturer in India providing high-performance alloy round bars that are created to suit applications that require high levels of strength at the high temperatures. Class D material has excellent stress rupture, creep resistance and finds used in power generation, petrochemical and heavy engineering application-critical components. We produce these round bars with controlled chemistry, precise heat treatment, and strict quality checks to ensure reliable performance under continuous thermal and mechanical loads.
Key advantages of Grade 660 Class D round bars include:
- Outstanding creep and stress rupture resistance at high temperatures
- High tensile and yield strength for critical load-bearing parts
- Uniform microstructure and fine surface finish
- Availability in wide diameter ranges for machining flexibility
- Supply in solution annealed or heat-treated condition as required
We also supply related materials such as Astm A453 Grade 660 Class B Round Bar and compatible alloys like A286 AMS 5732 Round Bar, allowing buyers to select the right grade for different operating conditions. The same alloy system is widely used for Hastelloy C226 Round Bar production, ensuring material consistency across fasteners and structural components used in high-temperature assemblies.
ASTM A453 Grade 660 Class D Round Bar – Material & Application Specifications
Standard | Grade / Class | Form | Diameter Range | Key Properties | Typical Applications |
ASTM A453 | Grade 660 Class D | Round Bar | 12 mm – 300 mm | Excellent creep & rupture strength | Turbines, boilers |
ASTM A453 | Grade 660 Class B | Round Bar | 10 mm – 250 mm | High heat resistance | Power plant components |
ASTM A453 | Grade 660 | Fastener | As per drawing | Heat & oxidation resistant | Astm A453 Grade 660 Fastener |
AMS | A286 AMS 5732 | Round Bar | 8 mm – 200 mm | High strength at temperature | Aerospace & turbines |
ASTM A453 Grade 660 Class D Round Bar – Product Supplied Quantity by City
Product Type | Supplied Quantity | City |
Grade 660 Class D Round Bar | 188 Pcs | Mumbai |
Grade 660 Class B Round Bar | 155 Pcs | Ahmedabad |
A286 AMS 5732 Round Bar | 195 Pcs | Chennai |
Astm A453 Grade 660 Fastener Material | 166 Pcs | Pune |
Type of Sub-products
Hot Rolled Astm A453 Grade 660 Class D Round Bar Hot Rolled Astm A453 Grade 660 Class D Round Bar
Hot rolled ASTM A453 Grade 660 Class D round bars are produced at high temperatures, resulting in improved formability and strength for heavy duty applications. These bars are well suited for use in turbine components, high temperature bolts, and flange connections where reliable performance under thermal stress is essential.
Cold Drawn Astm A453 Grade 660 Class D Round Bar Cold Drawn Astm A453 Grade 660 Class D Round Bar
Cold drawn round bars offer enhanced surface finish and greater dimensional precision. The cold working process increases the tensile strength and hardness, making these bars ideal for high pressure bolting, valve stems, and precision machined parts in energy and aerospace industries.