Home > Square Bar > Nickel Alloy Square Bars
Grades: Inconel 625 & Monel 400 | High-Performance Nickel Alloy Square Bars
Inox Steel India is a trusted manufacturer, supplier, stockist, and exporter of nickel alloy square bars, supplying premium grades Inconel 625 (UNS N06625) and Monel 400 (UNS N04400) to industries operating under extreme corrosion, high temperature, and high-pressure conditions. These nickel alloy square bars are engineered for applications where conventional stainless steel and alloy steel fail to deliver long-term reliability.
Nickel alloy square bars are widely used in oil & gas, offshore platforms, chemical processing, aerospace, marine engineering, power generation, and heat exchanger systems, where resistance to aggressive chemicals, seawater, and thermal stress is critical.
All nickel alloy square bars supplied by Inox Steel India are manufactured in accordance with ASTM B446 / B564 (Inconel 625) and ASTM B164 (Monel 400) standards, ensuring consistent metallurgy, traceability, and global project compliance.
A nickel alloy square bar is a solid square-section bar manufactured from high-nickel alloys designed to offer exceptional corrosion resistance, mechanical strength, and stability at elevated temperatures.
Unlike carbon or stainless steels, nickel alloys retain their properties in environments involving:
The square geometry provides flat reference surfaces, high torsional rigidity, and fabrication flexibility, making nickel alloy square bars ideal for precision machining, structural supports, and critical components.
Inox Steel India follows controlled metallurgical and processing practices to ensure nickel alloy square bars meet stringent service requirements.
Manufacturing Process Overview:
This process ensures consistent corrosion resistance, dimensional accuracy, and reliable performance in severe operating environments.
Nickel alloy square bars offer performance advantages unmatched by conventional materials:
These properties make nickel alloy square bars indispensable in high-risk industrial applications.
Inox Steel India supplies two widely used nickel alloy grades in square bar form:
🔹 Inconel 625 Square Bars
Nickel-chromium-molybdenum alloy offering outstanding resistance to pitting, crevice corrosion, and high-temperature oxidation. Commonly used in aerospace, offshore oil & gas, chemical plants, and high-temperature equipment.
🔹 Monel 400 Square Bars
Nickel-copper alloy known for excellent resistance to seawater, alkalis, and hydrofluoric acid, making it ideal for marine engineering, heat exchangers, and chemical processing equipment.
MASTER TECHNICAL DATASHEET – NICKEL ALLOY SQUARE BARS
| Parameter | Inconel 625 | Monel 400 |
|---|---|---|
| Material Category | Nickel–Chromium–Molybdenum Alloy | Nickel–Copper Alloy |
| UNS Number | N06625 | N04400 |
| ASTM Specification | ASTM B446 / B564 | ASTM B164 |
| Density | 8.44 g/cm³ | 8.80 g/cm³ |
| Nickel Content | ≥ 58 % | ~63 – 70 % |
| Chromium (Cr) | 20 – 23 % | — |
| Molybdenum (Mo) | 8 – 10 % | — |
| Copper (Cu) | — | 28 – 34 % |
| Tensile Strength | ≥ 827 MPa | ≥ 550 MPa |
| Yield Strength | ≥ 414 MPa | ≥ 240 MPa |
| Elongation | ≥ 30 % | ≥ 35 % |
| Hardness | ≤ 220 HB | ≤ 180 HB |
| Corrosion Resistance | Exceptional (Acids, Chlorides) | Excellent (Seawater, Alkalis) |
| Oxidation Resistance | Excellent | Good |
| Temperature Resistance | Up to 980°C | Up to 480°C |
| Weldability | Excellent | Excellent |
| Magnetic Property | Non-Magnetic | Non-Magnetic |
| Heat Treatment | Solution Annealed | Annealed |
| Surface Finish | Black / Ground | Black / Ground |
| Manufacturing Process | Hot Rolled / Forged | Hot Rolled / Forged |
| Size Range (Square) | 8 mm – 120 mm | 8 mm – 120 mm |
| Length | Random / Fixed / Cut Length | Random / Fixed / Cut Length |
| Testing | Chemical, Mechanical, PMI | Chemical, Mechanical, PMI |
| Certification | EN 10204 3.1 / 3.2 | EN 10204 3.1 / 3.2 |
| NACE Compliance | MR0175 / MR0103 | MR0175 / MR0103 |
| HSN / HS Code | 7505.12.00 | 7505.12.00 |
| Typical Applications | Aerospace, Offshore, Chemical | Marine, Oil & Gas, Heat Exchangers |
Before selecting nickel alloy square bars, engineers and buyers should evaluate:
Correct grade selection ensures maximum durability, safety, and lifecycle cost efficiency.
This section provides procurement-ready and engineering-focused clarity for Nickel Alloy Square Bars, covering standard sizes, weight calculations, indicative pricing, testing requirements, and application mapping for Inconel 625 and Monel 400.
Inox Steel India supplies nickel alloy square bars in standard industry sizes and custom cut lengths for critical engineering and export projects.
Standard Square Bar Sizes (mm)
8 | 10 | 12 | 16 | 20 | 22 | 25 | 30 | 32 | 35 | 40 | 45 | 50 | 60 | 65 | 70 | 75 | 80 | 100 | 120
Length: Random (3–6 m) or fixed / cut lengths
Tolerance: As per ASTM B446 / B564 / B164
Finish: Hot Rolled (Black), Ground / Machined (on request)
Commonly demanded sizes include 20mm, 25mm, 40mm, and 50mm nickel alloy square bars for offshore and chemical applications.
The following steel square bar weight chart supports BOQ preparation and price estimation.
(Density considered: Inconel 625 ≈ 8.44 g/cm³, Monel 400 ≈ 8.80 g/cm³)
| Square Size (mm) | Inconel 625 (kg/m) | Monel 400 (kg/m) |
|---|---|---|
| 10 × 10 | 0.84 | 0.88 |
| 12 × 12 | 1.21 | 1.27 |
| 16 × 16 | 2.16 | 2.25 |
| 20 × 20 | 3.38 | 3.52 |
| 25 × 25 | 5.28 | 5.50 |
| 30 × 30 | 7.60 | 7.92 |
| 40 × 40 | 13.50 | 14.08 |
| 50 × 50 | 21.10 | 22.00 |
| 65 × 65 | 35.50 | 36.95 |
| 75 × 75 | 47.40 | 49.30 |
| 100 × 100 | 84.40 | 88.00 |
Addresses buyer queries such as:
nickel square bar weight
nickel alloy bar weight per meter
square bar steel weight calculation
Prices vary based on grade, size, finish, certification (NACE), and quantity. Below is an indicative nickel alloy square bar price range for reference.
Indicative Price Range (INR/kg – India)
| Grade | Approx. Price / Kg (INR) | Typical Use |
|---|---|---|
| Inconel 625 | ₹ 2,800 – ₹ 4,200 | Offshore, aerospace, chemical |
| Monel 400 | ₹ 1,900 – ₹ 3,200 | Marine, heat exchangers |
Prices are indicative and fluctuate with nickel prices, import duty, certification scope, and order volume.
HSN Code (India): 7505.12.00
HS Code (Export): 7505.12
Applicable to nickel alloy bars and rods, used for domestic billing and international export documentation.
All nickel alloy square bars supplied by Inox Steel India undergo stringent testing to ensure performance in extreme service environments.
Nickel alloy square bars are selected where corrosion resistance and high-temperature strength are critical.
Global buyers and EPC contractors choose Inox Steel India for material reliability, documentation strength, and export capability.
Key Advantages:
Our objective is to deliver nickel alloy products that perform reliably in the most aggressive service environments.
| Industry | Application | Preferred Grade |
|---|---|---|
| Oil & Gas / Offshore | Structural parts, clamps, subsea hardware | Inconel 625 |
| Chemical Processing | Reactors, heat exchangers | Inconel 625 |
| Marine Engineering | Seawater handling, ship components | Monel 400 |
| Power & Energy | High-temperature components | Inconel 625 |
| Aerospace | High-stress & heat-resistant parts | Inconel 625 |
| Heat Exchangers | Tubesheets, fasteners | Monel 400 |
All nickel alloy square bars are packed to meet international export and project standards.
Packing Standards:
Export Markets: UAE, Saudi Arabia, Oman, Qatar, Africa, Europe, Southeast Asia
Domestic Supply: Mumbai, Gujarat, Chennai, Visakhapatnam
Whether you need Inconel 625 for offshore & aerospace or Monel 400 for marine and chemical service, Inox Steel India delivers certified quality, competitive pricing, and reliable global supply.
52-A, Mulji Thackersi Bldg, Islampura Street, Shop No. 10, Near Alankar Cinema, Mumbai – 400 004
alloy@inoxsteelindia.in
+91 9930796690
Inconel 625 offers excellent high-temperature and oxidation resistance, while Monel 400 excels in seawater and alkaline environments.
Yes, both grades are widely used in offshore and marine applications.
Yes, nickel alloy square bars can be supplied as per NACE MR0175 / MR0103.
Standard sizes range from 8 mm to 120 mm, with custom cut lengths available.
The HSN code is 7505.12.00.
Yes, we export to GCC, Africa, Europe, and Southeast Asia.
Inox Steel India supplies nickel alloy square bars in Inconel 625 & Monel 400 grades. Get latest price per kg, sizes, weight chart & certified stock.