Alloy 602 CA Plates | UNS N06025 High-Strength Oxidation-Resistant Plates for Extreme Furnace & Process Duty
Table of Contents:
When the reliability and procurement teams rebuilt critical hardware with Alloy 602 CA Plates (UNS N06025, W.Nr. 2.4633), they moved to what multiple datasheets describe as one of the most oxidation‑resistant and high‑strength nickel alloys available, capable of service up to and beyond 2200°F (≈1200°C) with excellent high‑temperature creep behaviour, outstanding resistance to oxidation under cyclical conditions and very good corrosion resistance in carburising and oxidising/chlorinating media; typical plate data list tensile strength ≥680 MPa, yield strength ≥270 MPa, elongation ≥30% and approval for pressure containers from −10 to 1150°C by VdTÜV as well as use up to 982°C under ASME code, turning historically short‑lived furnace and kiln components into long‑life assets.
Alloy 602 CA is a high‑carbon nickel‑chromium‑iron alloy with aluminium and yttrium additions that form a tightly adhering chromium‑aluminium oxide scale, giving extremely low scaling rates at temperature and self‑healing behaviour when the surface is damaged. The high chromium content around 25% combined with approximately 2.2% aluminium and a microalloyed 0.1% yttrium enables a continuous alumina subscale whose adhesion and spall‑resistance are significantly better than conventional heat‑resistant alloys, making Alloy 602 CA a preferred material where product contamination from scale must be minimal, such as calciners and high‑purity rotary kilns.
For procurement heads, process and mechanical engineers, fabricators, OEMs and hardware or industrial supply stores serving chemical, oil & gas, marine, pharma and power generation, Alloy 602 CA plates answer a specific gap: stainless steels and many nickel alloys lose strength, carburise or shed scale in high‑load, cyclic high‑temperature service, whereas 602 CA combines very high creep strength with oxidation and carburisation resistance in methane, carbon monoxide and carbon‑rich gases. Technical notes explain that high‑nickel alloys like 602 CA show excellent resistance to carburisation because the tenacious oxide scale impedes carbon diffusion; creep‑rupture and creep‑limit data confirm that the alloy maintains useful creep resistance at temperatures where many grades have already exhausted design life, supporting its use in heat‑treating baskets, trays, hangers and long‑span radiant tubes.
Aurico Alloys LLP can help as an affordable, authentic Alloy 602 CA Plates supplier, manufacturer and stockist in India, providing UNS N06025 / 2.4633 plates to ASTM B168 / ASME SB168 and related standards with NABL‑approved EN 10204 3.1 Mill Test Certificates for radiant tubes, furnace muffles, rotary kiln shells and internals, superheater hangers, hazardous waste incineration chambers and high‑temperature reactor linings. This directly matches search intent such as “Alloy 602 CA plate suppliers in Mumbai for radiant tubes and furnace muffles”, “ASME SB168 Alloy 602 CA plates for superheater tube hangers in thermal power plants”, “High‑temperature oxidation resistant Alloy 602 CA plates for rotary kiln and shaft components”, “Alloy 602 CA plate price in Mumbai for high‑load heat‑treating baskets and trays”, “UNS N06025 Inconel plates for high‑purity alumina calciners in the Indian chemical industry” and “Alloy 602 CA plate stockist in Mumbai for hazardous waste incineration chambers”.
High-quality Alloy 602 CA Plates ready for industrial use.
Specification Overview
| Supplier & Role | Aurico Alloys LLP – Alloy 602 CA plate suppliers in Mumbai for radiant tubes, furnace muffles, rotary kilns, superheater hangers, incinerators and high‑temperature process equipment, with verified NABL‑approved MTCs for domestic and export projects. |
|---|---|
| Alloy Description | High‑temperature nickel‑chromium‑iron alloy with aluminium and yttrium additions, described as one of the most oxidation‑resistant and high‑strength nickel alloys, designed for long‑term service around 1200°C in oxidising, carburising and oxidising/chlorinating atmospheres. |
| UNS / Werkstoff / EN | UNS N06025, W.Nr. 2.4633; often designated Alloy 602 CA in EN/VDM datasheets and product catalogues. |
| Main Plate Standards | ASTM B168 / ASME SB168 for plate, sheet and strip; DIN EN 10302 for heat‑resisting steels and nickel alloys; ISO 6208 for plate, sheet and strip; VdTÜV material data sheet 540 approvals for pressure vessels from −10 to 1150°C and ASME Section I and VIII Div.1 approvals up to about 899–982°C. |
| Key Design Focus | Excellent high‑temperature creep behaviour, outstanding oxidation resistance under cyclical conditions and very good corrosion resistance in carburising and oxidising/chlorinating media. |
| Target Industries | Thermal power, steel and ceramics, chemical and petrochemical processing, oil & gas, marine exhaust and flare systems, pharma thermal processing, aerospace and molten‑glass vitrification systems. |
| Price | INR 4,500 – 10,000 per kg. Indicative USD 53 – 118 per kg; quoted against grade, form, size and quantity. |
UNS & Equivalent Grades
| Property | Value |
|---|---|
| UNS number | N06025 |
| Werkstoff / EN number | 2.4633 |
| EN designation | NiCr25FeAlY |
| Density | 7.93 g/cm3 |
| Melting range | 1340-1400 °C |
| Relative magnetic permeability (20 °C) | 1.01 (maximum) |
| Plate, sheet and strip specification | ASTM B168 |
Identifiers and physical constants for 602 CA. A dash means no such designation is published for this grade.
Stock & Product Availability
As ASME SB168 Alloy 602 CA plate stockist in Mumbai, Aurico Alloys LLP can offer plates rolled and solution‑annealed around 1220°C with oxidised or descaled surfaces for radiant tubes, furnace muffles, superheater tube hangers and high‑load heat‑treating baskets and trays, often in thicknesses from a few millimetres up to heavy plate sections depending on project demand. Typical published plate properties include minimum tensile strength ≥680 MPa, minimum 0.2% yield ≥270 MPa and minimum elongation ≥30%, which give generous design margins for pressure‑bearing hangers, supports and structural components in thermal power, petrochemical and waste‑incineration service.
This inventory and cutting capability supports search phrases like “Alloy 602 CA plate price in Mumbai for high‑load heat‑treating baskets and trays”, “Carburization resistant Alloy 602 CA plates for methanol and ammonia synthesis reformers”, “Alloy 602 CA plate exporters in Mumbai for hydrogen production and chemical reactor liners”, “UNS N06025 Inconel plates for high‑purity alumina calciners in the Indian chemical industry” and “Alloy 602 CA plate stockist in Mumbai for hazardous waste incineration chambers”, ensuring procurement heads and hardware or industrial supply stores can secure both standard sizes and custom‑cut plates with full documentation.
Chemical Composition
| Element | Min (%) | Max (%) |
|---|---|---|
| Nickel (Ni) | — | Balance |
| Chromium (Cr) | 24 | 26 |
| Iron (Fe) | 8 | 11 |
| Carbon (C) | 0.15 | 0.25 |
| Manganese (Mn) | — | 0.5 (UNS N06025 gives 0.15 max) |
| Silicon (Si) | — | 0.5 |
| Copper (Cu) | — | 0.1 |
| Aluminium (Al) | 1.8 | 2.4 |
| Titanium (Ti) | 0.1 | 0.2 |
| Yttrium (Y) | 0.05 | 0.12 |
| Zirconium (Zr) | 0.01 | 0.1 |
| Phosphorus (P) | — | 0.02 |
| Sulfur (S) | — | 0.01 |
Composition limits for 602 CA. These are specification limits for the grade, not measured values for a lot; the mill test certificate supplied with your order states the actual analysis.
Mechanical & Physical Properties
| Property (Solution-Annealed Plate) | Typical Value – Alloy 602 CA / UNS N06025 |
|---|---|
| Ultimate Tensile Strength (RT) | ≥680 MPa minimum; some data show values above this for plate and strip. |
| 0.2% Yield Strength (RT) | ≥270 MPa minimum for plate; high‑temperature creep‑limit curves are provided for long‑term design. |
| Elongation | ≥30% in 2 in (50 mm) per representative plate data. |
| Impact Toughness | Charpy impact energy often reported as >56 J/cm² transverse and >69 J/cm² longitudinal in solution‑annealed condition. |
| Maximum Recommended Temperature | “Extreme temperature use up to and beyond 2200°F (≈1200°C)” for oxidation‑limited service; ASME approvals up to ≈899–982°C for pressure design. |
| Oxidation Performance | Outstanding resistance to oxidation at high temperatures, even under cyclic heating and cooling, with scaling resistance better than Alloy 601 across the usable temperature range. |
| Carburisation & Chlorination Resistance | Very good resistance in carburising gases (CH₄, CO and other carbon‑rich mixtures) and oxidising/chlorinating media, aided by the tenacious oxide scale which slows carbon ingress. |
Applications & Benefits
- Thermal Power & Heat Treat: Alloy 602 CA plates are widely used for radiant tubes, furnace muffles, rotary kiln and shaft components, superheater tube hangers and high‑load heat‑treating baskets and trays, leveraging their superior creep strength and oxidation resistance compared with 601 and stainless steels.
- Chemical & Petrochemical Processing: Carburisation‑resistant Alloy 602 CA plates support methanol and ammonia synthesis reformers, hydrogen production units, high‑purity alumina calciners and hazardous waste incineration chambers where carburising and oxidising/chlorinating gases combine at very high temperature.
- Marine, Oil & Gas: Marine‑grade 602 CA plates can be used for high‑heat offshore exhaust systems, flare booms, flare tips and gas‑turbine components in the energy sector, with corrosion resistance in oxidising/chlorinating media making them suitable for some subsea and coastal tools.
- Pharma, Aerospace & Vitrification: Alloy 602 CA ferrule inserts and plates can be applied in high‑temperature pharmaceutical heat exchangers, custom cut plates for jet engine igniters and aerospace components and molten‑glass vitrification systems where minimal scaling and long‑term dimensional stability are critical.
FAQ & Search Trends
Global Export Destinations
We ship worldwide from Mumbai. See every destination we export to on our export markets page.
Domestic Supply Network
We deliver across India from our Mumbai stockyard. See every city we supply on our supply locations page.
Conclusion
Alloy 602 CA Plates from Aurico Alloys LLP, supplied to UNS N06025 / 2.4633 chemistry limits and ASTM B168 / ASME SB168 mechanical and high‑temperature requirements with EN 10204 3.1 NABL‑approved Mill Test Certificates, give chemical, oil & gas, marine, pharma and power‑generation users a nickel‑chromium‑aluminium‑yttrium alloy that combines exceptional oxidation and carburisation resistance up to about 1200°C, excellent creep strength and very good performance in oxidising/chlorinating media for radiant tubes, kilns, furnaces, flare systems, incinerators and advanced process plants are your most extreme high‑temperature and high‑load assets still relying on conventional furnace alloys instead of optimised Alloy 602 CA plates?