High Nickel Alloy Flat Bars
High Nickel Alloy Flat Bars are engineered to deliver exceptional strength, corrosion resistance, and thermal stability, making them ideal for use in demanding industrial environments. Composed of high-nickel materials such as Inconel, Monel, Hastelloy, and Nickel 200/201, these flat bars offer superior resistance to oxidation, pitting, stress corrosion cracking, and aggressive chemicals. They are widely used in petrochemical plants, marine engineering, power generation units, chemical processing equipment, aerospace components, and high-temperature furnace applications where durability and long service life are critical.
Due to their long service life, resistance to wear, and ability to maintain structural integrity under critical conditions, High Nickel Alloy Flat Bars are a cost-effective solution compared to conventional steel bars. Their durability reduces maintenance downtime and enhances overall equipment efficiency, making them indispensable in industries that operate under harsh conditions..
Quality High Nickel Alloy Flat Bars undergo rigorous testing, including tensile tests, hardness tests, PMI testing, and ultrasonic inspection, ensuring compliance with global standards like ASTM, ASME, DIN, EN, and JIS. They are supplied in customized thicknesses, widths, and lengths to suit application-specific needs, providing industries with reliable solutions for structural, mechanical, and high-temperature applications..
Manufacturers produce High Nickel Alloy Flat Bars in a variety of grades, such as Inconel, Monel, Hastelloy, and Nickel 200/201, each offering specific advantages depending on the operating conditions. Their ability to resist pitting, crevice corrosion, and stress corrosion cracking makes them a preferred choice in chloride-bearing environments and acidic process streams. These bars are available in hot-rolled, cold-drawn, and precision-ground conditions to meet diverse engineering requirements..
Specifications & Standards
| Property | Typical / Standard |
|---|---|
| Grades | Inconel 625, Monel 400, Hastelloy C-22, Hastelloy C-276 |
| Standards | ASTM B443, ASTM B446, ASTM B575, ASME/UNS |
| Forms | Hot-rolled flat bar, cold-rolled flat bar, turned & polished bar |
| Surface Finish | Hot-rolled, cold-rolled, polished |
| Testing | Dimensional, tensile, hardness, PMI, MTC |
Chemical Composition (typical ranges)
| Element | Inconel 625 (wt %) | Monel 400 (wt %) | Hastelloy C-22 (wt %) |
|---|---|---|---|
| Nickel (Ni) | 58 min | 63 min | 56 min |
| Chromium (Cr) | 20–23 | 1–2 | 20–22 |
| Molybdenum (Mo) | 8–10 | 0–0.3 | 12–14 |
| Iron (Fe) | 5 max | 28–34 | 6–8 |
| Cobalt (Co) | 0.5 max | 0.5 max | 1 max |
Mechanical Properties (typical)
| Property | Typical Value | Notes |
|---|---|---|
| Tensile Strength (UTS) | 550 – 900 MPa | Depends on grade and condition |
| Yield Strength | 240 – 500 MPa | Varies with grade and rolling |
| Elongation | 30–50% | High ductility |
| Hardness | HRB 85–95 | Varies with condition |
Equivalent Grades & Designations
| Common Name | ASTM / AISI | EN | UNS |
|---|---|---|---|
| Inconel 625 | ASTM B446 / B443 | N/A | UNS N06625 |
| Monel 400 | ASTM B165 / B444 | N/A | UNS N04400 |
| Hastelloy C-22 | ASTM B574 / B575 | N/A | UNS N06022 |
Dimension Chart — Flat Bar (Common sizes)
Standard widths and thicknesses supplied in mm & inch.
| Width (mm) | Thickness (mm) | Lengths (mm) | Tolerance |
|---|---|---|---|
| 20–200 | 5–25 | 1000–6000 | ±0.1–0.5 mm |
| 250–400 | 30–50 | 1000–6000 | Custom |
Typical Applications
- Chemical processing equipment
- Marine and offshore structures
- Power generation components
- Aerospace and defense parts
- Oil & gas and refinery pipelines
- Heat exchangers, valves, and pumps
These flat bars are widely used across industries such as petrochemical, marine engineering, pharmaceuticals, power generation, pollution control equipment, and aerospace. Their excellent mechanical strength, even at elevated temperatures, allows them to deliver consistent performance in furnaces, heat exchangers, chemical processing units, and offshore platforms. High Nickel Alloy Flat Bars also exhibit outstanding formability and weldability, making them suitable for complex fabrications and precision machining.
High Nickel Alloy Flat Bars are engineered for exceptional performance in environments where superior corrosion resistance, high strength, and excellent thermal stability are essential. These alloys contain a significantly high percentage of nickel, often combined with chromium, molybdenum, and iron, which enhances their ability to withstand extreme temperatures and aggressive media. Their unique metallurgical composition makes them ideal for applications that require resistance to oxidation, carburization, and corrosive chemicals..
Frequently Asked Questions (FAQ)
Q1: What are High Nickel Alloy Flat Bars commonly used for?
A: High Nickel Alloy Flat Bars are used in highly corrosive and high-temperature environments such as chemical processing units, marine equipment, offshore structures, power plants, heat exchangers, and oil & gas components due to their excellent strength and oxidation resistance.
Q2: Do you provide mill test certificates (MTC)?
A: Yes — Rose Metal Industries provides MTCs as per EN 10204 3.1 along with PMI, chemical analysis, mechanical test reports, and third-party inspection (TPI) on request.
Q3: Which standards do your High Nickel Alloy Flat Bars comply with?
A: Our products are supplied according to ASTM B446, ASTM B443, ASTM B575, ASME specifications, and UNS designations depending on the grade such as Inconel, Monel, and Hastelloy alloys.
Q4: Can you supply custom widths, thicknesses and special finishes?
A: Yes — we offer precision cutting, custom sizes, polished finishes, close tolerances, and tailor-made solutions based on project requirements for clients across Tamilnadu, Karnataka, Telangana, Andhra Pradesh, Puducherry and Andaman & Nicobar Islands.
Q5: How do I choose the right High Nickel Alloy grade for my application?
A: Selection depends on temperature, corrosion environment, media type, pressure, and mechanical load. Inconel 625 is preferred for high temperature, Monel 400 for marine and saltwater, while Hastelloy C-22/C-276 is ideal for severe chemical corrosion. Our team will guide you based on your application.