Stainless Steel 316 Round Bars

Inconel 925 Round Bars

Inconel 925 Round Bars Manufacturer, Supplier & Exporter in Mumbai, India

Virami Steel Hub is a trusted manufacturer, supplier, stockist, and exporter of premium Inconel 925 Round Bars in Mumbai, India. We supply Inconel 925 round bars across India and export worldwide, including the USA, Europe, Canada, Middle East, Australia, and Southeast Asia.

Inconel 925 is a nickel-iron-chromium alloy engineered to provide exceptional corrosion resistance, high strength, and excellent resistance to pitting, crevice, and stress corrosion cracking, even in extreme acidic and marine environments. Our Inconel 925 round bars are manufactured under strict quality control standards to ensure high performance in chemical, petrochemical, marine, and offshore applications.

Stainless Steel 316 Round Bars

What is Inconel 925 Round Bar?

Inconel 925 is a nickel-iron-chromium alloy strengthened with cobalt, molybdenum, and copper, combining the corrosion resistance of nickel alloys with the toughness of iron-based alloys. It is particularly designed to resist chloride-induced corrosion, stress corrosion cracking, and pitting in highly aggressive chemical environments.

Key characteristics of Inconel 925 round bars:

  • High resistance to pitting, crevice corrosion, and stress corrosion cracking
  • Exceptional performance in acidic and chloride-rich environments
  • Excellent mechanical properties at elevated temperatures
  • Weldable and formable for complex fabrication
  • Non-magnetic in annealed condition

Inconel 925 round bars are widely used in chemical reactors, heat exchangers, seawater systems, marine applications, and industrial process equipment where durability and corrosion resistance are critical.


Key Features of Inconel 925 Round Bars

  • Superior corrosion resistance in strong acids and chloride-rich media
  • High tensile and yield strength for heavy-duty applications
  • Outstanding resistance to stress corrosion cracking and pitting
  • Non-magnetic in annealed condition
  • Excellent mechanical properties at ambient and elevated temperatures
  • Weldable and formable for complex engineering applications
  • Suitable for long-term service in harsh environments

These properties make Inconel 925 round bars an ideal choice for chemical, marine, and offshore industries.


Chemical Composition of Inconel 925 Round Bars (%)

  • Nickel (Ni): 42 – 46%
  • Iron (Fe): 27 – 31%
  • Chromium (Cr): 19 – 23%
  • Copper (Cu): 1 – 2%
  • Molybdenum (Mo): 2.5 – 3.5%
  • Cobalt (Co): 1.5 – 2.5%
  • Manganese (Mn): ≤ 1%
  • Silicon (Si): ≤ 0.8%
  • Carbon (C): ≤ 0.10%
  • Phosphorus (P): ≤ 0.03%
  • Sulfur (S): ≤ 0.015%

Role of Alloying Elements

  • Nickel: Provides excellent corrosion resistance and toughness
  • Iron: Adds structural strength and stability
  • Chromium: Enhances oxidation resistance and pitting protection
  • Molybdenum: Improves resistance to localized corrosion such as pitting and crevice corrosion
  • Copper: Enhances resistance to strong acids, particularly sulfuric acid
  • Cobalt: Provides high-temperature strength and stability

Mechanical Properties of Inconel 925 Round Bars

Inconel 925 exhibits excellent mechanical properties suitable for high-stress industrial applications:

  • Tensile Strength: 850 – 950 MPa
  • Yield Strength (0.2% Offset): 400 – 500 MPa
  • Elongation: 30 – 40%
  • Hardness: 200 – 250 HB

These properties ensure reliability under high load, temperature, and corrosive conditions, making Inconel 925 suitable for chemical reactors, pumps, valves, and marine hardware.


Physical Properties of Inconel 925 Round Bars

  • Density: 8.1 g/cm³
  • Melting Range: 1350 – 1400°C
  • Thermal Conductivity: 11 W/m·K
  • Electrical Resistivity: 1.2 μΩ·m
  • Modulus of Elasticity: 205 GPa
  • Magnetic: Non-magnetic in annealed condition

The combination of high strength, corrosion resistance, and excellent thermal stability makes Inconel 925 suitable for extreme operating environments.


Corrosion Resistance of Inconel 925 Round Bars

Inconel 925 round bars are specifically engineered for severe chemical environments, providing:

  • Exceptional resistance to pitting, crevice corrosion, and stress corrosion cracking in chloride-rich environments
  • Resistance to strong oxidizing and reducing acids, including sulfuric and hydrochloric acid
  • Stability in seawater and marine environments
  • Suitable for high-temperature chemical processing

This makes Inconel 925 round bars ideal for chemical processing, offshore platforms, and seawater systems.


Heat Treatment of Inconel 925 Round Bars

Inconel 925 is typically supplied in the solution-annealed condition for maximum corrosion resistance and mechanical strength:

Step 1: Solution Annealing

  • Heat to 1050 – 1150°C
  • Rapid water quenching

Step 2: Stress Relief (Optional)

  • Heat to 400 – 600°C to relieve residual stresses from welding or machining

Proper heat treatment ensures maximum corrosion resistance, mechanical strength, and dimensional stability.


Machinability of Inconel 925 Round Bars

Inconel 925 is moderately difficult to machine due to its high strength and work hardening:

  • Use carbide or high-performance cutting tools
  • Moderate cutting speed and feed rates
  • Continuous application of coolant is essential
  • Machining in annealed condition improves tool life and surface finish
  • Use anti-galling coatings or lubricants for threading

Weldability of Inconel 925 Round Bars

Inconel 925 can be welded using standard nickel alloy techniques:

  • TIG (GTAW), MIG (GMAW), and SMAW are recommended
  • Low heat input to prevent stress and preserve corrosion resistance
  • Filler metals: Inconel 625 or 925-compatible fillers
  • Post-weld solution annealing may be required for thick sections

Correct welding ensures the retention of corrosion resistance and mechanical properties.


Available Sizes & Specifications

Inconel 925 Round Bars are available in:

Standards:

  • UNS N09925
  • ASTM B637
  • ASTM B435

Size Range:

  • Diameter: 6 mm – 250 mm
  • Length: 3 m, 6 m, or customized cut lengths
  • Tolerances: As per ASTM / UNS standards

Surface Finish:

  • Hot Rolled / Bright
  • Polished
  • Centerless Ground

Applications of Inconel 925 Round Bars

Inconel 925 is widely used in industries where high corrosion resistance and mechanical strength are critical:

Chemical & Petrochemical Industry

  • Reactors and pressure vessels
  • Heat exchangers
  • Pumps and valves in highly corrosive media
  • Process equipment exposed to strong acids

Marine & Offshore Applications

  • Seawater pumps, valves, and piping
  • Offshore platform components
  • Desalination plant equipment

Industrial & High-Temperature Applications

  • Shafts, rods, and structural components in corrosive environments
  • Bearings, bushings, and rotating machinery
  • Components in high-temperature chemical processes

Advantages of Inconel 925 Round Bars

  • Superior corrosion resistance in strong acids and chloride-rich media
  • High tensile and yield strength for demanding applications
  • Excellent resistance to pitting, crevice corrosion, and stress corrosion cracking
  • Weldable and machinable under proper conditions
  • Non-magnetic in annealed condition
  • Long service life in harsh chemical and marine environments
  • Suitable for chemical, offshore, marine, and industrial applications

Quality Testing & Inspection

All Inconel 925 round bars undergo:

  • Chemical composition analysis
  • Mechanical property testing
  • Hardness testing
  • Dimensional inspection
  • Non-destructive testing (ultrasonic, dye-penetrant)
  • Surface finish verification

Mill Test Certificates (MTC) are provided as per ASTM / UNS standards. Third-party inspection is available upon request.

Why Choose Virami Steel Hub for Inconel 925 Round Bars?

  • Trusted stainless steel and nickel alloy manufacturer in Mumbai
  • High-performance chemical, marine, and industrial-grade materials
  • Competitive global pricing and fast delivery
  • Custom sizes, lengths, and heat treatment options
  • Certified quality assurance and MTC
  • Expertise in offshore, chemical, marine, and industrial applications

Conclusion

Inconel 925 Round Bars are high-performance nickel-iron-chromium alloy products offering exceptional corrosion resistance, stress corrosion cracking resistance, and mechanical strength. Ideal for chemical processing, marine, offshore, and industrial applications, Inconel 925 ensures durability, reliability, and long-term performance in highly aggressive environments.

Virami Steel Hub supplies premium-quality Inconel 925 Round Bars with certified testing and customizable sizes, making it the preferred choice for critical industrial applications.

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