Grades: Inconel 625 (UNS N06625), Monel 400 (UNS N04400)
Inox Steel India is a manufacturer, supplier, and exporter of nickel alloy hex bars, supplying to chemical processing, marine, offshore, power, and high-performance engineering industries across India, GCC countries, the Middle East, Africa, Europe, and the Americas.
Nickel alloy hex bars are supplied in Inconel 625 and Monel 400 grades, manufactured in accordance with ASTM / ASME standards. These alloys are selected for applications requiring exceptional corrosion resistance, high-temperature strength, and reliability in aggressive environments.
With controlled melting, solution annealing, and dimensional processing, nickel alloy hex bars supplied by Inox Steel India provide uniform microstructure, consistent mechanical properties, and dependable performance in critical service conditions.
Nickel alloy hex bars are solid long products with a hexagonal (six-sided) cross section, manufactured from nickel-based alloys engineered to withstand corrosive media, high pressure, and elevated temperatures. The hexagonal profile enables positive tool grip and torque transmission, making these bars suitable for fasteners, fittings, and precision-machined components.
Nickel alloy hex bars are produced from alloy billets using hot rolling, forging, or cold drawing, followed by solution annealing or annealing to achieve the required strength, ductility, and corrosion resistance.
Manufacturing Steps:
1️⃣ Billet Selection & Heating
Nickel alloy billets of Inconel 625 or Monel 400 are selected and heated under controlled conditions.
2️⃣ Hot Rolling / Forging
Billets are processed through rolling or forging to obtain accurate hexagonal dimensions.
3️⃣ Cold Drawing (Where Required)
Bars may be cold drawn to improve surface finish and dimensional tolerance.
4️⃣ Heat Treatment
Solution annealing or annealing is performed to restore corrosion resistance and mechanical properties.
5️⃣ Straightening & Cutting
Bars are straightened and cut to standard or custom lengths.
6️⃣ Final Inspection
Chemical analysis, mechanical testing, and PMI are conducted before dispatch.
These properties make nickel alloy hex bars suitable for severe service and high-performance environments.
🧩 Grades & Standards Available
Nickel alloy hex bars are supplied in the following grades:
Materials are supplied as per ASTM B446 / SB446 (Inconel 625) and ASTM B164 / SB164 (Monel 400) specifications.
👉 (Refer to the approved Master Technical Data Sheet for chemical composition, mechanical properties, and standard hex bar sizes in mm.)
When selecting nickel alloy hex bars, the following parameters should be evaluated:
1️⃣ Corrosive Media and Operating Environment
2️⃣ Temperature and Pressure Conditions
3️⃣ Mechanical Strength Requirements
4️⃣ Fabrication and Welding Needs
5️⃣ Compliance with Project Specifications
Correct grade selection ensures long service life, safety, and operational reliability.
🌍 Usage & Demand Overview
In India, nickel alloy hex bars are widely used by chemical plants, refineries, marine equipment manufacturers, and power sector suppliers, particularly for applications exposed to corrosive chemicals, seawater, and high temperatures.
Export demand is driven by offshore platforms, petrochemical facilities, power generation projects, and aerospace-related applications requiring ASTM- and ASME-compliant nickel alloy materials.
⚙ Applications and Technical Specifications by Grade
Nickel alloy hex bars supplied by Inox Steel India are selected for services involving corrosive media, high pressure, and elevated temperatures. Grade selection depends on chemical exposure, temperature range, and mechanical load requirements.
Inconel 625 (UNS N06625) Hex Bars
Service Use: Severe corrosion and high-temperature environments.
Typical Applications: Offshore fasteners, heat exchanger components, chemical processing equipment, aerospace fittings.
Industry Sectors: Chemical | Offshore | Power | Aerospace
Monel 400 (UNS N04400) Hex Bars
Service Use: Seawater and alkaline environments.
Typical Applications: Marine fasteners, pump shafts, valve components, condenser parts.
Industry Sectors: Marine | Oil & Gas | Chemical | Power
Nickel alloy hex bars are supplied in standard metric hex bar sizes in accordance with ASTM tolerances.
(Refer to standard hex bar sizes in mm PDF and hex bar size chart in mm India for detailed dimensions and weights.)
⚖ Nickel Alloy Hex Bar Weight Chart (Indicative)
| AF Size (mm) | Approx. Weight (kg/m) |
|---|---|
| 8 | 0.43 |
| 10 | 0.68 |
| 12 | 0.98 |
| 16 | 1.74 |
| 20 | 2.72 |
| 25 | 4.25 |
| 30 | 6.11 |
| 40 | 10.86 |
| 50 | 16.90 |
| 60 | 24.60 |
Weights are indicative and may vary based on tolerance and alloy density.
💰 Nickel Alloy Hex Bars Price (Indicative – India)
| Grade | Approx. Price Range (INR / kg) |
|---|---|
| Inconel 625 | ₹ 2,200 – ₹ 3,800 |
| Monel 400 | ₹ 1,600 – ₹ 2,800 |
Prices vary based on size, finish (black / bright / polished), quantity, and prevailing nickel market rates.
🔢 Nickel Alloy Hex Bar HSN / HS Code
HSN Code: 7505
Applicable for nickel and nickel-alloy bars and rods under Indian and international trade classification.
🧪 Testing & Quality Inspection
Nickel alloy hex bars are inspected and tested to ensure compliance with applicable standards.
Testing includes:
Material can be supplied with EN 10204 3.1 / 3.2 certification on request.
Inox Steel India supplies nickel alloy hex bars with controlled metallurgy, certified processing, and full traceability for critical-service applications. Material is processed and inspected to meet demanding requirements involving corrosion, temperature, and pressure.
Key supply features:
🧩 Industries Served
Nickel alloy hex bars are supplied to the following industries:
Grade selection is aligned with corrosion media, operating temperature, and mechanical load requirements.
Standard across-flat sizes range from 8 mm to 60 mm. Other sizes can be supplied on request. Yes. Inconel 625 offers excellent resistance to oxidizing and reducing media, while Monel 400 provides outstanding resistance to seawater and alkalis. The applicable HSN code is 7505. Yes, custom cut lengths are available as per requirement. Material can be supplied with EN 10204 3.1 / 3.2 test certification on request. What are the standard hex bar sizes in mm?
Are nickel alloy hex bars corrosion resistant?
What is the HSN code for nickel alloy hex bars?
Are custom cut lengths available?
Is test certification provided with supply?