Neptune Alloys is a leading manufacturer of Nimonic round bars, engineered for use in the most demanding high-temperature and high-stress industrial environments. Nimonic is a nickel-chromium-based superalloy that offers outstanding resistance to oxidation, corrosion, and thermal fatigue. These round bars are ideal for turbine blades, heat treatment fixtures, exhaust systems, and gas turbine engine parts. With excellent mechanical properties retained at temperatures over 1000°C, they are a preferred material in aerospace, nuclear, and thermal power sectors. The material is available in various grades, including Nimonic 75, 80A, and 90, each tailored for specific stress and temperature ranges.

We supply as per international standards like ASTM B637 and EN specifications, every bar undergoes non-destructive testing, tensile strength verification, and grain structure examination to ensure performance and durability. We provide complete B2B customization in size, grade, tolerance, and finish depending on operational requirements. Supported by reliable supply logistics and advanced manufacturing capability, we deliver Nimonic round bars efficiently across India and export markets. These bars serve industries where performance under heat and stress cannot be compromised.