Alloy 115 (UNS N06115 / 2.4636) is a precipitation-hardenable nickel-chromium-cobalt-molybdenum superalloy representing the peak of wrought superalloy development for turbine blading. With optimized aluminum (4.5-5.5%) and titanium (3.5-4.5%) additions for gamma-prime strengthening, it delivers exceptional creep rupture strength and oxidation resistance up to 1100°C (2012°F), surpassing all other Nimonic alloys in high-temperature capability .
1. Product Specifications & Physical Data ZYTC Alloy supplies UNS N07115 in mill forms suitable for gas turbine blades, nozzle guide vanes, and defense applications requiring the highest available creep strength in a wrought alloy. Available Forms: Round bar, flat bar, rod, plate, sheet, wire, and forgings . Specifications: Werkstoff Nr. 2.4635, DIN 17744, BS HR 5 .
| Chemical Composition (Weight %) | Alloy 115 Specification |
|---|
| Nickel (Ni) | 54 (Balance) | | Chromium (Cr) | 14.0 - 16.0 | | Cobalt (Co) | 13.0 - 15.5 | | Molybdenum (Mo) | 3.0 - 5.0 | | Aluminum (Al) | 4.50 - 5.50 | | Titanium (Ti) | 3.50 - 4.50 | | Carbon (C) | 0.12 - 0.20 | | Boron (B) | 0.010 - 0.025 | | Zirconium (Zr) | 0.15 max. | | Iron (Fe) | 1.0 max. | | Manganese (Mn) | 1.0 max. | | Silicon (Si) | 1.0 max. | | Copper (Cu) | 0.20 max. | | Sulfur (S) | 0.015 max. |
| Physical Properties | Metric | Imperial |
|---|
| Density | 7.85 g/cm³ | 0.284 lb/in³ | | Melting Range | 1304 - 1400°C | 2380 - 2552°F | | Modulus of Elasticity (RT) | 202 GPa | 29.3 × 10⁶ psi | | Thermal Conductivity (RT) | 11.8 W/m·K | 82 BTU·in/hr·ft²·°F |
| Mechanical Properties (Aged) | Temperature | Metric | Imperial |
|---|
| Tensile Strength | RT | ≥ 1300 MPa | ≥ 189 ksi | | Yield Strength (0.2% offset) | RT | ≥ 850 MPa | ≥ 123 ksi | | Elongation | RT | ≥ 25% | ≥ 25% | | Tensile Strength | 870°C (1600°F) | 965 MPa | 140 ksi | | Yield Strength | 870°C (1600°F) | 620 MPa | 90 ksi | | Elongation | 870°C (1600°F) | 20% | 20% |
2. Manufacturing, Processing & Competitive Comparison
Nimonic® 115 is a high-strength, work-hardenable alloy that requires robust processing equipment and strict thermal controls. Heat Treatment: A two-stage cycle is mandatory to develop full mechanical properties: Solution: 1190°C (2175°F) for 1.5 hours Precipitation: Cool to 1099°C (2010°F), hold for 6 hours, air cool
Hot Working: Requires powerful forging presses and precise temperature control within the working range. The alloy's high flow stress limits formability compared to lower-strength grades like Nimonic 75. Machining: Work-hardens rapidly. Requires heavy-duty rigid setups, sharp tooling, and high-pressure coolant to prevent surface tearing and maintain tool life. Water-based coolants for high-speed ops; heavy lubricants for drilling/tapping. Welding & Forming: Weldable via GTAW/GMAW with matching filler. Forming requires adequate power and thorough cleaning of lubricants post-forming to avoid contamination. Competitive Edge: Compared to Nimonic 90 and 91, Nimonic 115 delivers a significant increase in high-temperature creep strength and extends the service ceiling to 1100°C. It offers a wrought, forgeable alternative to cast superalloys in the most demanding turbine and aerospace applications.
Applications Gas Turbine Engines: Turbine blades (rotor and stator) for highest-temperature stages, nozzle guide vanes Aerospace: Advanced engine hot section components requiring maximum creep strength Defense: Missile and propulsion system components Automotive: Extreme-performance racing engine valves Nuclear: High-temperature reactor components
Contact ZYTC Alloy for certified Alloy 115 (UNS N06115 / 2.4636) materials with complete traceability, BS/AMS specifications, technical datasheets, and competitive pricing on standard sizes or custom-forged components. Email:daisy@zytcsteel.com WhatsApp/WeChat: +86 17335753350 |
