In the high-temperature alloy industry, a common misconception is viewing "corrosion resistance" as a singular category. For engineers designing turbocharger rotors or gas turbine nozzles, the real enemy is not acid, but high-temperature oxidation and sulfidation.
Inconel 713C (UNS N07713) is not just any nickel alloy bar; it is a special corrosion-resistant high-temperature alloy designed to maintain structural integrity and a stable surface throughout its service life at 1000°C. As a leading supplier of vacuum ion melting (VIM) master alloys, Gnee Alloy can provide the data you need to ensure your thermal components do not fail prematurely.
Contact our professionals to recommend the right alloy for your project
Inconel 713C Corrosion Resistance Bar: Advantages in oxidizing environments up to 1000°C
Inconel 713C Corrosion Resistance Bar: Advantages in oxidizing environments up to 1000°C
Inconel 713C is a nickel-based superalloy bar with excellent oxidation and corrosion resistance at temperatures up to 1000°C, making it a key material for high-stress, high-temperature components. It is primarily used in casting (vacuum investment casting) to manufacture components such as turbine blades, guide vanes, and turbochargers. In these applications, it is a more cost-effective alternative to more complex alloys while maintaining structural stability and resistance to thermal fatigue.
What are the properties of Inconel 713C material?
Inconel 713C has extremely high corrosion resistance. Upon heating, a thick, stable oxide layer forms on the surface, providing protection. This material maintains its strength over a wide temperature range. This metal alloy is particularly suitable for applications with temperatures up to 900°C.
1. Inconel 713C chemical composition (AMS 5391)
To ensure the formation of a perfect protective oxide layer, the chromium-aluminum ratio must be precisely controlled. All 713C steel bars supplied by Gnee Alloy are produced using a strictly controlled vacuum induction melting (VIM) process.
| Element | Content (Wt. %) | Role in Performance |
| Nickel (Ni) | Balance | Provides the heat-resistant austenitic matrix. |
| Chromium (Cr) | 12.00 - 14.00 | Key for resistance to hot corrosion (Sulfidation). |
| Aluminum (Al) | 5.50 - 6.50 | Essential for forming the 1000°C Alumina scale. |
| Molybdenum (Mo) | 4.00 - 5.00 | Provides solid solution strengthening. |
| Niobium (Nb) | 1.80 - 2.80 | Enhances high-temperature stability. |
| Titanium (Ti) | 0.50 - 1.00 | Works with Al for Gamma-Prime strengthening. |
| Iron (Fe) | 2.50 Max | Controlled to maintain high-temp purity. |
Click to download the Inconel 713C alloy PDF file now
3. Inconel 713C Mechanical Properties: Strength at 1800°F (982°C)
Oxidation resistance is useless if the metal deforms under load. Inconel 713C combines surface protection with elite creep rupture strength.
| Property | Typical Value (at Room Temp) | Typical Value (at 1800°F / 982°C) |
| Tensile Strength (UTS) | 827 MPa (120 ksi) | 345 MPa (50 ksi) |
| Yield Strength (0.2% Offset) | 758 MPa (110 ksi) | 276 MPa (40 ksi) |
| Elongation (%) | 5% | 10% |
| Stress Rupture Life | - | 290 MPa for 30+ Hours |
4. Inconel 713C alloy technology comparison: high-temperature oxidation performance
| Performance Metric | Inconel 713C | Inconel 718 | Stainless Steel 310S |
| Max Scale Stability Temp | 1100°C (2012°F) | 700°C (1292°F) | 950°C (1742°F) |
| Oxidation Type | Internal & External (Alumina) | External (Chromia) | External (Chromia) |
| Resistance to Sulfidation | Excellent | Moderate | Low |
| Rotor Centrifugal Load | Superior | Moderate | Very Low |
5. Advantages of Inconel 713C Alloy Rods in Oxidizing Environments (Up to 1000°C)
Stable Protective Oxide Layer: Inconel 713C forms a stable, continuous, and non-porous alumina (Al₂O₃) layer on its surface at high temperatures, exhibiting excellent oxidation resistance.
Low Oxidation Rate: This alloy exhibits a low parabolic growth constant (K₁) in oxidation tests, meaning that the oxide growth rate is slow even at temperatures up to 1000°C.
High Temperature Strength: Under continuous use conditions from 980°C to 1000°C, this alloy maintains excellent mechanical integrity (tensile strength up to 1240 MPa) and resists creep and fatigue.
Corrosion resistance in corrosive media: In addition to pure oxidizing environments, 713C also exhibits strong corrosion resistance in oxidizing atmospheres, including sulfur-containing (SO₂) atmospheres, with a corrosion resistance temperature range of 800°C to 1100°C.
Rhenium improvement: Studies have shown that rhenium doping (Inconel 713C:Re) can reduce oxide layer growth at 1000°C, thereby improving oxidation resistance.
Click to view our professional certificates for Inconel 713C alloy
6. Typical applications of the Inconel 713C
Aerospace: Gas turbine blades, guide vanes, and jet engine combustion chambers.
Automotive: Turbocharger rotors and high-performance exhaust systems.
Industrial: Heat exchanger and reactor components.
Why choose Gnee Alloy's master alloy wheels manufactured using the VIM melting process?
✅️High-Purity VIM Feedstock: Our bars are produced in a deep vacuum to eliminate trace sulfur and silicon, which can "poison" the protective oxide scale.
✅️AMS 5391 Compliance: Every shipment includes a Full Traceability MTC 3.1, ensuring your aerospace-grade project meets all global safety standards.
✅️Strategic Bulk Pricing: As a direct exporter, Gnee Alloy provides wholesale prices and annual supply contracts to turbocharger manufacturers worldwide.
Gnee Steel inconel 713C Certificate
📦 Packaging and Shipping
All Nickel Based Alloy products are packaged using the following methods:
Wooden pallets or crates
Moisture-proof packaging
Labels with furnace number, standard, and size labels
Shipped worldwide by sea, air, or express
Gnee Steel 713C Product Packing
Contact us for the latest export price quote for 713C Alloy
FAQ
Q: Why is 713C better for "Hot Corrosion" than standard stainless steels?
A: "Hot Corrosion" usually involves molten salts or sulfur at 1000°C. Stainless steels rely on Chromium, which can react with salts and disappear. Inconel 713C's high Nickel and Aluminum content creates a barrier that is far more resistant to this specific chemical attack.
Q: Can your 713C bars improve our turbocharger service life?
A: Yes. By using our ultra-low gas content master alloy, your castings will have fewer surface inclusions, allowing the protective Alumina scale to form more uniformly, extending the 1000°C service life by up to 25%.
Q: What is the PREN value for Inconel 713C?
A: PREN is typically used for aqueous (wet) corrosion. For 713C, the focus is on its Al/Cr ratio, which is optimized for high-temperature oxidation rather than chloride pitting.
