Stainless Steel 316 Round Bars

Stainless Steel Nitronic 60 Round Bars Manufacturer, Supplier & Exporter in Mumbai, India

Stainless Steel Nitronic 60 Round Bars Manufacturer, Supplier & Exporter in Mumbai, India

Virami Steel Hub is a leading manufacturer, supplier, stockist, and exporter of high-quality Stainless Steel Nitronic 60 Round Bars in Mumbai, India. We supply SS Nitronic 60 round bars across India and export worldwide to the USA, Canada, Europe, Russia, Middle East, Australia, and Southeast Asia. Our Nitronic 60 round bars are produced under stringent quality controls, ensuring superior corrosion resistance, exceptional strength, wear resistance, and reliable performance in demanding environments.

SS Nitronic 60 Round Bars are widely used in chemical processing, pulp and paper, aerospace, marine, power generation, and heavy industrial applications due to their unique combination of corrosion resistance, galling resistance, and high mechanical strength.

Stainless Steel 316 Round Bars

What is Stainless Steel Nitronic 60 Round Bar?

Stainless Steel Nitronic 60 (UNS S21800) is a high-strength austenitic stainless steel alloyed with nitrogen and silicon to enhance corrosion resistance, galling resistance, and mechanical properties. It belongs to the Nitronic family, developed for applications requiring resistance to wear, seizing, and corrosive environments.

Key characteristics of SS Nitronic 60:

  • Nitrogen-strengthened austenitic stainless steel
  • Exceptional galling and wear resistance
  • Excellent corrosion resistance in oxidizing and reducing media
  • High strength and toughness at ambient and elevated temperatures
  • Non-magnetic in most conditions
  • Weldable and machinable under controlled conditions

SS Nitronic 60 Round Bars are used in high-performance pumps, valves, fasteners, shafts, and components in chemical plants, marine systems, and industrial machinery.


Key Features of SS Nitronic 60 Round Bars

  • Superior resistance to galling, wear, and seizing in threaded and sliding components
  • Excellent pitting, crevice, and stress corrosion resistance
  • High yield and tensile strength
  • Non-magnetic in annealed condition
  • High toughness at cryogenic and elevated temperatures
  • Good fabricability and weldability
  • Excellent dimensional stability and precision machining performance

This combination makes SS Nitronic 60 ideal for chemical, marine, and industrial applications where both mechanical strength and corrosion resistance are critical.


Chemical Composition of Stainless Steel Nitronic 60 Round Bars (%)

  • Chromium (Cr): 17 – 19
  • Nickel (Ni): 11 – 13
  • Manganese (Mn): 2 – 3
  • Silicon (Si): 0.5 – 1.0
  • Nitrogen (N): 0.25 – 0.35
  • Carbon (C): ≤ 0.03
  • Iron (Fe): Balance

Role of Alloying Elements

  • Chromium: Provides oxidation and general corrosion resistance
  • Nickel: Stabilizes austenitic structure and enhances toughness
  • Nitrogen: Improves yield strength, pitting resistance, and prevents sensitization
  • Silicon: Enhances oxidation resistance and galling resistance
  • Carbon: Low carbon reduces carbide precipitation, ensuring high corrosion resistance

Mechanical Properties of SS Nitronic 60 Round Bars

SS Nitronic 60 is a high-performance austenitic stainless steel. Typical mechanical properties include:

  • Tensile Strength: 860 – 950 MPa
  • Yield Strength (0.2% Offset): 550 – 700 MPa
  • Elongation: 40 – 50%
  • Hardness: 180 – 220 HB (Brinell)

Compared to conventional austenitic stainless steels like 304 or 316, Nitronic 60 offers higher yield strength and excellent galling resistance, making it ideal for threaded fasteners and rotating components.


Physical Properties of Stainless Steel Nitronic 60

  • Density: 7.9 g/cm³
  • Modulus of Elasticity: 193 – 200 GPa
  • Melting Range: 1390 – 1420°C
  • Thermal Conductivity: 15.6 W/m·K
  • Electrical Resistivity: 0.74 μΩ·m
  • Magnetic: Non-magnetic in annealed condition

Its combination of high strength, corrosion resistance, and non-magnetic nature makes it suitable for high-performance applications in chemical and marine environments.


Corrosion Resistance of SS Nitronic 60 Round Bars

SS Nitronic 60 provides:

  • Excellent resistance to oxidizing acids, including nitric and ferric acid
  • Resistance to moderate reducing acids such as hydrochloric and sulfuric acids
  • Superior resistance to pitting and crevice corrosion in chloride environments
  • Exceptional galling resistance, preventing thread and sliding component seizing

Nitronic 60 is widely used in chemical processing plants, seawater systems, desalination plants, marine hardware, and industrial machinery where corrosion and wear resistance are critical.


Heat Treatment of SS Nitronic 60

SS Nitronic 60 is primarily solution annealed to optimize corrosion resistance and mechanical properties:

Step 1: Solution Annealing

  • Heat to 1040 – 1120°C
  • Rapid water quenching

Step 2: Stress Relief (Optional)

  • Heat to 400 – 600°C to relieve internal stresses

No precipitation hardening is required, and proper solution annealing ensures maximum corrosion resistance and mechanical performance.


Machinability of SS Nitronic 60 Round Bars

Nitronic 60 is harder to machine than ferritic stainless steels, but controlled machining yields excellent results:

  • Use carbide cutting tools
  • Moderate cutting speeds and feeds
  • Apply sufficient coolant
  • Machining in solution-annealed condition recommended
  • Use lubrication for high-galling resistance components

Weldability of Stainless Steel Nitronic 60 Round Bars

SS Nitronic 60 is weldable using standard austenitic welding techniques:

  • TIG (GTAW), MIG (GMAW), and SMAW are suitable
  • Low carbon and nitrogen content prevents carbide precipitation
  • Post-weld stress relief recommended for thick sections
  • Compatible filler metals include ER2209 or ER316L

Proper welding ensures retention of corrosion resistance and mechanical properties.


Available Sizes & Specifications

SS Nitronic 60 Round Bars are supplied in:

Standards:

  • ASTM A276
  • ASTM A479
  • UNS S21800

Size Range:

  • Diameter: 6 mm to 300 mm
  • Length: 3 m, 6 m, or custom cut lengths
  • Tolerances: As per ASTM / UNS standards

Surface Finish:

  • Hot Rolled / Bright
  • Polished
  • Centerless Ground

Applications of Stainless Steel Nitronic 60 Round Bars

SS Nitronic 60 is widely used in high-strength, high-corrosion, and high-wear environments:

Chemical & Petrochemical Industry

  • Pumps and valves
  • Reactor shafts
  • Heat exchanger components
  • Mixer shafts

Marine & Offshore Applications

  • Propeller shafts
  • Offshore platform hardware
  • Seawater valves and fittings

Industrial & Heavy Machinery

  • High-strength fasteners and screws
  • Shafts and rods
  • Bearings, bushings, and couplings
  • Wear-resistant machinery parts

Aerospace Industry

  • Landing gear components
  • Aerospace fasteners
  • Rotating shafts

Advantages of Stainless Steel Nitronic 60 Round Bars

  • High mechanical strength and exceptional ductility
  • Excellent corrosion resistance, pitting resistance, and stress corrosion cracking resistance
  • Superior wear and galling resistance for threaded and sliding parts
  • Non-magnetic in annealed condition
  • Suitable for machining, welding, and fabrication
  • Long service life in harsh chemical and marine environments

Quality Testing & Inspection

All SS Nitronic 60 Round Bars undergo:

  • Chemical composition testing
  • Mechanical property verification
  • Hardness testing
  • Dimensional inspection
  • Ultrasonic testing
  • Surface finish inspection

Mill Test Certificates (MTC) are provided according to ASTM / UNS standards. Third-party inspection is available on request.


Why Choose Virami Steel Hub for SS Nitronic 60 Round Bars?

  • Trusted stainless steel supplier and manufacturer in Mumbai
  • High-performance chemical, marine, and aerospace-grade materials
  • Competitive pricing and global export network
  • Custom sizes, lengths, and heat treatment options
  • Strict quality assurance and certified testing
  • Experienced in chemical, marine, aerospace, and industrial sectors

Conclusion

Stainless Steel Nitronic 60 Round Bars are high-strength, austenitic stainless steel products offering superior corrosion resistance, galling resistance, and mechanical performance. With excellent properties for chemical processing, marine, aerospace, and industrial machinery applications, Nitronic 60 is a premium choice for demanding environments.

Virami Steel Hub supplies premium-quality SS Nitronic 60 Round Bars with certified testing, global delivery, and customizable sizes. Our products are engineered to deliver durability, wear resistance, and corrosion resistance for long-term reliability in critical applications.

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