Alloy 602 CA (UNS N06025, ASTM B168) Foil: Extreme Oxidation and Carburization Resistance
Table of Contents:
A petrochemical reformer in the Middle East suffered rapid carburization failure of its alloy tubes at 1180°C, contaminating product and incurring $3 million in unscheduled downtime. Alloy 602 CA (UNS N06025, ASTM B168, W.Nr. 2.4633) foil prevents such catastrophes with unmatched high-temperature stability and self-healing oxide layers.
Specifications & Standards
Foil is flat product, so the specification that covers it is ASTM B168 / ASME SB 168 - the sheet, plate and strip standard. B166 / SB 166 covers rod, bar and wire in the same alloy and is the one to quote for those forms, not for foil. VDM Metals also lists DIN 17742 and 17750, DIN EN 10302, and VdTÜV material data sheet 540, which is what carries the pressure-container approval from -10 to 1150°C.
Rigorous validation includes ASTM G28 (corrosion), E8 (tensile), and cyclic oxidation per ISO 15547, supporting global exports with 3.2 certs.
Product Forms & Availability
Foil thicknesses 0.01-0.6 mm, widths up to 1200 mm, solution annealed at 1175°C per ASTM B168. High creep strength enables thin-gauge use in furnace muffles.
Mumbai-based supply chains provide slitting, plasma cutting for OEM fabricators in power and chemical plants.
Chemical Composition
| Element | Alloy 602 CA % |
|---|---|
| Nickel | Balance |
| Chromium | 23.0-26.0 |
| Iron | 8.0-11.0 |
| Aluminum | 2.0-2.7 |
| Manganese | 1.0 max |
| Titanium | 0.1-0.5 |
| Yttrium | 0.05-0.15 |
| Carbon | 0.10-0.20 |
Y+Ti+Zr stabilize carbides, enhancing creep; Al forms adherent Al2O3 scale.
Mechanical & Physical Properties
Density 8.0 g/cm³, melting 1340-1420°C, UTS 680 MPa, yield 270 MPa, 35% EL, HRB 90 max at RT. Exceptional creep: 100 MPa/10000h at 1100°C.
Thermal conductivity 11.3 W/m·K at 20°C, expansion 13.6 µm/m·°C to 1000°C, superior cyclic oxidation to 1250°C.
Frequently Asked Questions
Certifications & Compliance
ISO 9001/AS9100, NACE MR0175/ISO 15156 sour service, PED 97/23/EC. Includes IGA ASTM A262 E, hardness mapping, ready for AD2000 Merkblatt pressure certification exports.
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 (UNS N06025, ASTM B168) foil guarantees longevity in the harshest thermal environments, affirmed by rigorous standards and superior metrics. Procurement leaders achieve uptime with proven supply reliability. Ready to upgrade your high-temp components?