Inconel 718 is a precipitation hardening nickel-based superalloy with superior high temperature strength, excellent creep resistance, fatigue performance and comprehensive corrosion resistance. It keeps stable physical and mechanical properties under ultra-high temperature, high pressure and severe alternating load environment. Featuring reliable welding performance and fine machinability, it fully satisfies strict precision, safety and long service life standards of aviation industry, which is the core preferred material for various key aviation structural parts and engine components.
Basic Information
| Item | Details |
|---|---|
| Material Grade | Inconel 718, UNS N07718, W.Nr.2.4668 |
| Executive Standards | ASTM B637, ASTM B622, AMS 5662, AMS 5664, ASME SB637 |
| Available Products | Alloy bar, seamless tube, welded pipe, forging part, fastener, sheet plate |
Mechanical Properties (Solution Aging State)
| Property | Standard Value |
|---|---|
| Tensile Strength | ≥1275 MPa |
| Yield Strength | ≥1035 MPa |
| Elongation | ≥12% |
| Hardness | ≤44 HRC |
| High Temperature Fatigue Resistance | Excellent under 650℃ working environment |
Dimensional Tolerance
| Specification | Tolerance Standard |
|---|---|
| Outer Diameter | Meet aviation grade ASTM standard precision tolerance |
| Wall Thickness | Strict industrial deviation control |
| Length | Custom fixed length & random length acceptable |
| Shape Precision | High roundness and straightness for aviation precision processing |
Reason for Aviation Industry Adoption
| Advantage | Application Reason |
|---|---|
| Ultra High Temperature Resistance | Stable performance in long-time high temperature environment of aero-engine |
| Strong Anti-Fatigue Ability | Resist frequent vibration and alternating load during flight operation |
| Good Oxidation & Corrosion Resistance | Resist high temperature flue gas, fuel and atmospheric corrosion |
| High Structural Safety | Low failure rate, fully meet aviation safety inspection standards |
| Easy Deep Processing | Suitable for manufacturing complex aviation precision parts |
Applicable Working Conditions
| Application Scope | Working Condition |
|---|---|
| Aero Engine Parts | High temperature, high pressure, high speed rotating working condition |
| Aviation High Strength Fasteners | Large load, temperature difference alternation, long-term stable use |
| Aircraft Structural Components | High altitude low temperature, atmospheric corrosion, heavy bearing environment |
| Aviation Hydraulic & Fuel Pipeline | High pressure delivery, anti-leakage, medium corrosion resistant condition |
| Aerospace Precision Accessories | Extreme temperature change, high precision assembly scene |
Aviation Industry User Demands
| Demand Direction | Core Requirement |
|---|---|
| Safety Priority | Strict material inspection, zero hidden danger for aviation equipment |
| Standard Compliance | Conform to international aviation material certification and industry norms |
| Stable Performance | Consistent mechanical properties in mass production |
| Customized Production | Support non-standard size, special heat treatment customization |
| Complete Documents | Provide full set of inspection reports and export certification |
Certification Support
Available with EN10204 3.1, MTR material report, PMI component detection, UT nondestructive testing, hydrostatic test and aviation industry qualified certification. We support global standard customization and one-stop supply service.