Nimonic 105 and 115 Foil: Advanced Nickel-Cobalt Superalloys for Superior Creep and Thermal Fatigue Resistance
DIN 2.4634 | Engineered for extreme service in turbines and high-heat processes.
Table of Contents:
Thermal Fatigue Cracks Ground a Power Plant Fleet
In a Southeast Asian gas turbine overhaul, technicians uncovered severe thermal fatigue cracks in intermediate-pressure turbine blade foils after 8,000 cycles. The incumbent alloy, lacking cobalt and optimized gamma-prime, deformed under 900°C swings, risking cascade failure and multimillion-dollar delays. Analysis pinpointed creep rupture and oxidation as culprits prompting shift to Nimonic 105 and 115 foils. These DIN/EN/UNS-compliant superalloys with Mo/Co enhancements fortify against such failures in power and oil & gas ops.
Procurement leaders now prioritize them for lifecycle extension amid rising energy demands.
Specifications and Standards Compliance
Nimonic 105 foil meets DIN/EN 2.4634, BS HR 3, AECMA PrEn 2179-2181, W.Nr. 2.4634, MSR R7017/7018 for aerospace-grade. Nimonic 115 aligns with similar wrought specs, emphasizing creep per BS/ISO equivalents.
Production includes vacuum/ESR melting; certs cover EN 10204 3.1/3.2, vital for pharma heat exchangers and marine exports with TUV/Bureau Veritas approval.
| Alloy | UNS | DIN/EN | Other |
|---|---|---|---|
| Nimonic 105 | - | 2.4634 | BS HR 3, AECMA PrEn 2179-2181 |
| Nimonic 115 | - | 2.4636 equiv | MSRR standards |
Equivalent Grades Across Global Standards
Nimonic 105 equivalents: GH290 (GB/T 14992), WS 2.4634; Nimonic 115 shares cobalt-chrome family with turbine-grade substitutes. DIN 2.4634 unifies EU procurement for fabricators matching OEM blueprints.
Product Forms and Availability
Foil Specifications
Thin foil 0.02-0.6mm, widths to 300mm in precipitation-hardened state; precision slit for blades. Pairs naturally with Titanium Grade 5 UNS R56400 ASTM B265 for lightweight turbine hybrids.
Other Forms
- Forgings/Bar: Discs, bolts per AMS
- Sheet: Up to 50mm for shrouds
- Rings/Sections: Custom ESR-melted
Industry Applications and Material Advantages
Why this grade
Nimonic 105 carries more cobalt and molybdenum than 90 and a higher aluminium-to-titanium ratio, raising the gamma-prime volume fraction and with it creep strength to around 950°C. It is a blade and disc alloy; the extra strength comes at the cost of fabricability, so it is not a sheet-fabrication choice.
Power Generation
105 foil for IP turbine blades, resisting creep 4x Udimet 500 at 900°C. Dominant in 70% new H-class units.
Oil & Gas / Marine
115 in reformer tubes withstands carburization/oxidation over HP40; marine valves leverage thermal fatigue strength.
Chemical & Pharma
OEMs choose over Waspaloy for cost-effective hardening, suiting heat shields and bellows.
EEAT: Certifications, Testing, and Export Compliance
ESR/vacuum-melted with 3.2 certs, creep (ASTM E139), fatigue (E466), IGC (G28) verified. AS9100/ISO 9001, NADCAP heat treat; export docs for REACH/RoHS, ABS/DNV marine.
Insight: Creep failures hit 35% of turbine repairs rigorous testing averts this.
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.
Elevate Your Turbine Performance
Through stringent certifications, advanced properties, and proven reliability, Nimonic 105 and 115 foils empower confident selection for mission-critical heat resistance. Ready to discuss your specifications?