In the aerospace and power generation sectors, the integrity of turbine engines depends on the structural reliability of their hot-end components. While standard Inconel 713C alloy can withstand high-temperature environments of 1800°F (982°C), its ductility is often insufficient for the requirements of large, monolithic rotors and complex geometries.
Gnee Alloy, as a Tier 1 supplier of high-temperature alloys, focuses on Inconel 713LC (UNS N07713)-an optimized "low-carbon" version designed to achieve optimal thermal fatigue strength and impact toughness.
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Inconel 713LC Alloy: Composition, Properties, and Uses
Inconel 713LC Alloy: Composition, Properties, and Uses
Inconel 713LC (Low Carbon) is a precipitation-hardening nickel-based cast superalloy designed to provide exceptional strength and creep resistance at temperatures up to 980°C (1800°F). It is an improved version of Inconel 713C with a lower carbon content, resulting in enhanced ductility, impact resistance, and thermal fatigue resistance, making it an ideal material for turbocharger impellers and aerospace turbine blades.
What are the properties of Inconel 713 LC material?
Inconel 713LC alloy is a high-performance nickel-based alloy with excellent high-temperature performance, oxidation resistance, creep resistance, and corrosion resistance. These properties make it widely used in high-temperature and corrosive environments such as aerospace, petrochemical, and nuclear energy.
Alloy 713LC chemical composition
1. Inconel 713C Chemical Composition and Standards (AMS 5377)
| Element | Carbon (C) | Nickel (Ni) | Aluminum (Al) | Titanium (Ti) | Chromium (Cr) | Zirconium (Zr) |
| 713LC (AMS 5377) | 0.05% Max | Balance | 5.5 - 6.5% | 0.5 - 1.0% | 11.0 - 13.0% | 0.05 - 0.15% |
Main specifications: AMS 5377 (precision casting, low carbon).
Click to download the Inconel 713C alloy PDF file now
2. Key Characteristics of Inconel 713C
High-Temperature Strength: Excellent creep rupture strength and tensile strength, maintaining structural stability even under high temperature and high stress.
Thermal Fatigue Resistance: Compared to 713C, the lower carbon content significantly improves its resistance to cyclic thermal stress (thermal fatigue) and creep resistance.
Excellent Casting Performance: Insensitive to casting dimensions and cooling rates, suitable for large, complex, and precision castings.
Oxidation Resistance: High chromium and aluminum content provides excellent corrosion and oxidation resistance at temperatures up to 980°C.
Improved Plasticity: Compared to its predecessor, Inconel 713C, it offers better room temperature toughness and impact resistance.
3. Inconel 713LC room temperature mechanical properties (casting + heat treatment)
| Property | Typical Value | Test Standard |
|---|---|---|
| Tensile Strength, Ultimate | 830 – 950 MPa (120-138 ksi) | ASTM E8 / ASTM E21 |
| Tensile Strength, Yield (0.2% Offset) | 650 – 760 MPa (94-110 ksi) | ASTM E8 / ASTM E21 |
| Elongation at Break | 3 – 6% | ASTM E8 / ASTM E21 |
| Reduction of Area | 3 – 6% | ASTM E8 |
| Hardness (Rockwell C) | 34 – 39 HRC | ASTM E18 |
| Modulus of Elasticity | ~205 GPa | ASTM E111 |
| Density | 7.90 g/cm³ | - |
4. Stress fracture and creep characteristics of Inconel 713LC
| Temperature | Stress | 713LC Rupture Life | Comparison to 713C |
|---|---|---|---|
| 700°C / 100h | 350 MPa | ~100 hours | Similar |
| 700°C / 1000h | 280 MPa | ~950 hours | ~5% lower |
| 800°C / 100h | 250 MPa | ~100 hours | Similar |
| 800°C / 1000h | 200 MPa | ~900-950 hours | ~5-10% lower |
| 850°C / 100h | 180 MPa | ~95 hours | Slightly lower |
| 900°C / 100h | 150 MPa | ~95 hours | Slightly lower |
| 950°C / 100h | 100 MPa | ~90-95 hours | Slightly lower |
Creep Strength:
| Temperature | 713LC Creep Strength (0.1% / 100h) |
|---|---|
| 800°C | ~190-195 MPa |
Click to view key data for Gnee Alloy Inconel 713LC alloy
5. Inconel 713LC Applications and Uses
The Inconel 713LC is primarily used in applications requiring high structural integrity at extreme temperatures, such as:
Aerospace Industry: Aircraft engine turbine blades and guide vanes
Automotive Industry: Turbocharger rotors and impellers
Power Generation: Gas turbine components
Industrial Processes: High-Temperature Casting Components
6. 713C vs 713LC Selection Guide
| Property | 713C | 713LC | Recommendation |
|---|---|---|---|
| Carbon Content | 0.05-0.15% | 0.05-0.10% | - |
| Elongation | 2-5% | 3-6% | 713LC |
| Weldability | Poor | Improved | 713LC |
| Castability | Excellent | Good | 713C |
| Creep Strength | Higher | 5-10% lower | 713C |
| Tensile Strength | Slightly higher | Similar | Similar |
| Recommended Section | All | > 25mm | Per need |
| Large Castings | Fair | Recommended | 713LC |
| Weld Repair | Difficult | Feasible | 713LC |
Contact us now to get the latest export price for 713C in 2026
7. Why choose to partner with Gnee Alloy?
As a leading global sourcing center for high-temperature alloys, Gnee Alloy offers more than just materials; we offer a stable supply chain.
✅️Factory-Direct Wholesale Pricing: Bypass middleman markups and secure competitive ROI for large-scale projects.
✅️Annual Supply Contracts: Hedge against Nickel price volatility with our stable long-term supply agreements.
✅️Full Traceability: Every shipment includes a comprehensive MTC 3.1 Certified report with detailed chemical and gas analysis (O, N < 10ppm).
Gnee Alloy inconel 713C certificate
FAQ
Q: Can I replace Inconel 713C with Inconel 713LC for my current project?
A: In most high-stress turbine applications, yes. Inconel 713LC maintains the same high-temperature creep strength as 713C while offering a much higher safety margin against cracking. Consult our technical sales team for a specific data comparison.
Q: Why is 713LC preferred for large integral rotors?
A: Larger castings cool more slowly, which can cause excessive carbide precipitation in high-carbon alloys. The "Low Carbon" chemistry of AMS 5377 ensures the rotor remains ductile enough to withstand centrifugal stresses without brittle failure.
Q: What forms of 713LC do you supply?
A: We primarily supply Master Alloy Sticks (standard Φ75mm/Φ80mm) specifically sized for vacuum induction casting furnaces.