Stainless Steel 316 Round Bars

Duplex/Super Duplex Stainless Steel Zeron 100 Round Bars Manufacturer, Supplier & Exporter in Mumbai, India

Duplex/Super Duplex Stainless Steel Zeron 100 Round Bars Manufacturer, Supplier & Exporter in Mumbai, India

Virami Steel Hub is a leading manufacturer, supplier, stockist, and exporter of premium Duplex/Super Duplex Stainless Steel Zeron 100 Round Bars in Mumbai, India. We supply Zeron 100 round bars across India and globally to the USA, Canada, Europe, Middle East, Australia, and Southeast Asia.

Our Zeron 100 round bars are engineered to deliver high corrosion resistance, exceptional mechanical strength, and outstanding stress corrosion cracking resistance in aggressive environments. These bars are widely used in chemical processing, petrochemical, marine, offshore, and industrial applications due to their unique duplex microstructure and high alloy content.

Stainless Steel 316 Round Bars

What is Duplex/Super Duplex Stainless Steel Zeron 100 Round Bar?

Duplex Stainless Steel Zeron 100 is a super duplex stainless steel (SDSS) designed for enhanced corrosion resistance and superior mechanical properties. It is an advanced alloy of iron, chromium, nickel, molybdenum, copper, and nitrogen, optimized to resist pitting, crevice corrosion, and stress corrosion cracking (SCC) in chloride-rich and aggressive environments.

Key characteristics of Zeron 100:

  • Super duplex microstructure (~50% ferrite, 50% austenite)
  • Exceptional resistance to chloride pitting and crevice corrosion
  • Superior stress corrosion cracking resistance
  • High tensile and yield strength
  • Non-magnetic in annealed condition
  • Weldable and formable under controlled conditions

SS Zeron 100 Round Bars are widely used in chemical reactors, offshore platforms, seawater pumps, valves, and oil & gas pipelines where high corrosion resistance and mechanical performance are essential.


Key Features of Duplex/Super Duplex Zeron 100 Round Bars

  • Exceptional resistance to chloride-induced pitting and crevice corrosion
  • High resistance to stress corrosion cracking in aggressive environments
  • Superior mechanical strength and toughness
  • Non-magnetic in annealed condition
  • Excellent dimensional stability for precision engineering
  • Weldable and suitable for fabrication in industrial applications
  • Resistant to erosion and wear in flowing corrosive media

These properties make Zeron 100 ideal for chemical processing, marine, oil & gas, and high-performance industrial equipment.


Chemical Composition of Duplex/Super Duplex Zeron 100 Round Bars (%)

Copper commercial grade bars typically conform to C11000 / ETP (Electrolytic Tough Pitch) copper with the following composition:

Role of Purity

  • Copper (Cu): Provides electrical and thermal conductivity, ductility, and corrosion resistance
  • Oxygen (O): Present in minimal amounts in ETP copper to aid mechanical processing
  • Trace Impurities: Kept minimal to maintain high conductivity and corrosion resistance

High-purity copper ensures reliable electrical performance and superior mechanical properties.


Mechanical Properties of Copper Commercial Grade Round Bars

Copper commercial grade round bars provide excellent mechanical and physical properties:

  • Chromium (Cr): 25 – 26
  • Nickel (Ni): 7 – 8
  • Molybdenum (Mo): 3.5 – 4
  • Copper (Cu): 0.5 – 1
  • Manganese (Mn): ≤ 2
  • Silicon (Si): ≤ 0.8
  • Nitrogen (N): 0.24 – 0.32
  • Carbon (C): ≤ 0.03
  • Iron (Fe): Balance

Role of Alloying Elements

  • Chromium: Enhances oxidation resistance and pitting protection
  • Nickel: Stabilizes austenitic structure and improves toughness
  • Molybdenum: Improves resistance to pitting, crevice corrosion, and chloride attack
  • Copper: Enhances resistance to sulfuric acid
  • Nitrogen: Strengthens the material and improves corrosion resistance
  • Carbon: Low carbon prevents carbide precipitation, maintaining duplex microstructure

Mechanical Properties of Zeron 100 Round Bars

Zeron 100 exhibits high-performance mechanical properties, making it ideal for high-stress applications:

  • Tensile Strength: 850 – 950 MPa
  • Yield Strength (0.2% Offset): 550 – 650 MPa
  • Elongation: 25 – 30%
  • Hardness: 280 – 330 HB

These mechanical properties are significantly higher than conventional austenitic stainless steels, ensuring reliability in critical applications exposed to corrosive environments.


Physical Properties of Duplex/Super Duplex Zeron 100

  • Density: 7.8 g/cm³
  • Modulus of Elasticity: 200 GPa
  • Melting Range: 1375 – 1400°C
  • Thermal Conductivity: 15 W/m·K
  • Electrical Resistivity: 0.75 μΩ·m
  • Magnetic: Slightly magnetic due to ferritic phase

The combination of high strength, corrosion resistance, and duplex microstructure allows Zeron 100 round bars to perform reliably in aggressive and high-stress environments.


Corrosion Resistance of Zeron 100 Round Bars

Zeron 100 exhibits exceptional corrosion resistance, making it suitable for harsh chemical and marine environments:

  • High resistance to chloride pitting and crevice corrosion
  • Superior stress corrosion cracking resistance in chloride-rich conditions
  • Resistance to oxidizing and reducing acids such as sulfuric and nitric acid
  • Excellent erosion-corrosion resistance in flowing seawater and brines

This makes Zeron 100 the material of choice for offshore platforms, desalination plants, chemical processing, and marine applications.


Heat Treatment of Zeron 100 Round Bars

Zeron 100 is supplied in the solution-annealed condition for optimal corrosion resistance and mechanical properties:

Step 1: Solution Annealing

  • Heat to 1050 – 1100°C
  • Rapid water quench

Step 2: Stress Relief (Optional)

  • Heat to 400 – 500°C to relieve stresses from welding or machining

Proper heat treatment ensures the duplex microstructure, maximizes corrosion resistance, and maintains mechanical strength.


Machinability of Duplex/Super Duplex Zeron 100

Machining Zeron 100 requires careful control due to high strength and work hardening tendencies:

  • Use carbide or high-performance cutting tools
  • Moderate cutting speeds and feed rates
  • Apply sufficient coolant to avoid tool overheating
  • Machining in annealed condition improves surface finish
  • Threaded components benefit from anti-galling coatings or lubrication

Weldability of Zeron 100 Round Bars

Zeron 100 can be welded effectively with proper procedures:

  • TIG (GTAW), MIG (GMAW), and SMAW welding techniques are suitable
  • Low heat input and interpass temperature control preserve duplex microstructure
  • Post-weld solution annealing recommended for thick sections
  • Filler metals: ER2594 or ER2209 for maximum corrosion resistance

Proper welding ensures retention of corrosion resistance, toughness, and dimensional stability.


Available Sizes & Specifications

Zeron 100 Round Bars are supplied in:

Standards:

  • UNS S32760
  • ASTM A276
  • ASTM A479

Size Range:

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

Surface Finish:

  • Hot Rolled / Bright
  • Polished / Machined
  • Centerless Ground

Applications of Duplex/Super Duplex Zeron 100 Round Bars

Zeron 100 is widely used in high-performance, corrosive, and high-strength applications:

Chemical & Petrochemical Industry

  • Reactors and vessels
  • Heat exchangers
  • Pumps, valves, and piping
  • Process equipment in highly corrosive environments

Marine & Offshore Applications

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

Oil & Gas Industry

  • Subsea pipelines and risers
  • Pump shafts and high-strength fasteners
  • Valves and fittings in aggressive chemical environments

Industrial Applications

  • Shafts, rods, and structural components
  • Bearings, bushings, and rotating equipment
  • Machinery parts exposed to erosion and wear

Advantages of Zeron 100 Round Bars

  • Superior corrosion resistance in chloride-rich and acidic environments
  • High yield and tensile strength for heavy-duty applications
  • Excellent resistance to stress corrosion cracking
  • Weldable and machinable with proper procedures
  • Non-magnetic in annealed condition
  • Long service life in aggressive environments
  • Suitable for chemical, offshore, marine, oil & gas, and industrial applications

Quality Testing & Inspection

All Zeron 100 Round Bars undergo:

  • Chemical composition verification
  • Mechanical property testing
  • Hardness testing
  • Dimensional inspection
  • Non-destructive testing (ultrasonic, dye-penetrant)
  • 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 Zeron 100 Round Bars?

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

Conclusion

Duplex/Super Duplex Stainless Steel Zeron 100 Round Bars are high-performance stainless steel products offering superior corrosion resistance, stress corrosion cracking resistance, and mechanical strength. Ideal for chemical, offshore, marine, oil & gas, and industrial applications, Zeron 100 ensures durability, long service life, and reliable performance in highly aggressive environments.

Virami Steel Hub supplies premium-quality Zeron 100 Round Bars with certified testing, customizable sizes, and global delivery, making it the trusted choice for demanding engineering applications.

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