Alloy N-155 Round Bars are premium cobalt-nickel-chromium based superalloy bars manufactured from UNS R30155 / EN 1.4974 grade for demanding high-temperature and high-strength applications. These round bars offer exceptional resistance to oxidation, corrosion, creep, and thermal fatigue while maintaining excellent mechanical properties at elevated temperatures. Alloy N-155 is widely used in aerospace, gas turbines, combustion chambers, aircraft exhaust systems, petrochemical plants, power generation, and other critical engineering industries. Available in round, flat, square, hexagonal, and rectangular forms, our Alloy N-155 Round Bars are manufactured using advanced forging, hot rolling, cold drawing, and precision machining processes to meet international quality standards and customer specifications.
Grade: Alloy N-155 Round Bar
Square bar size : 4 to 100mm
Hollow Bar : 32mm OD x 16mm ID to 250mm OD x 200mm ID)
Hex Bar size : 2-100mm A/F
Rectangles Size : 33 x 30mm to 295 x 1066mm
Flat bar size : Thickness: 2 -100mm, Width: 10 to 500mm
Round bar size : Diameter: 3-~800mm
Surface: Bright, Hot Rolled Pickled, Cold Drawn, Sand Blasting Finished, Polished, Hairline
Tolerance : H8, H9, H10, H11, H12, H13K9, K10, K11, K12 or as per clients’ requirements
Technique : Hot Rolled, Cold Drawn, Cold Rolled, Forged Round Bar, Rod
Condition : Hardened & tempered, annealed
Finish : Cold (bright) drawn, centreless ground, hot rolled, smooth turned, peeled, slit rolled edge, hot rolled annealed, Rough Turned, Bright, Polish, Grinding, Centreless Ground & Black
Processing : Bar cutting to 650mm
Alloy N-155 Round Bars Equivalent Grades
STANDARD: Alloy N-155
Material No: 1.4974
UNS: R30155
EN Designation: X12CrCoNi21-20
AISI/SAE: 661
Alloy: N-155
Advantages
- Excellent high-temperature strength with superior oxidation, corrosion, and creep resistance for demanding industrial environments.
- Manufactured using advanced forging, heat treatment, and precision machining techniques for excellent dimensional accuracy and surface finish.
- Each batch undergoes comprehensive chemical, mechanical, ultrasonic, PMI, and dimensional inspections to ensure consistent quality with an extremely low defect rate.
- Available in customized diameters, lengths, finishes, heat treatment conditions, and machining options as per customer drawings and application requirements.
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