Gnee Alloy, a trusted nickel-based alloy supplier with 18 years of experience, offers expert alternatives: precision-machined hollow profiles and custom-sized cast components. Our solutions are designed for high-temperature environments up to 1000°C, ensuring your turbine's core hot-end components meet the most stringent global safety standards.
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Inconel 713C Tube: Machining and Casting Guide for Core Hot-End Components
Inconel 713C Tube: Machining and Casting Guide for Core Hot-End Components
Inconel 713C tubing is a precipitation-hardening nickel-chromium cast high-temperature alloy tubing designed for high-stress, high-temperature (up to 1800°F/980°C) applications, particularly suitable for the hot ends of gas turbines and aero engines. Its superior creep strength and oxidation resistance make it ideal for precision-cast components such as turbine blades, guide vanes, and nozzle guide vanes.
What are the differences between Inconel 718 and 713C?
Inconel 713C is a precipitation-hardening nickel-chromium alloy. Inconel 718 is an age-hardening nickel-chromium alloy. Inconel 713C has superior mechanical properties at high temperatures compared to Inconel 718. Inconel 713C also has better corrosion resistance than Inconel 718.
1. Alloy 713C Chemical Composition (Wt. %)
| Element | Content (%) | Engineering Role |
| Nickel (Ni) | Balance | Base for thermal stability. |
| Chromium (Cr) | 12.00 - 14.00 | Oxidation & Hot Corrosion resistance. |
| Aluminum (Al) | 5.50 - 6.50 | Primary Gamma-Prime (γ′) strengthener. |
| Molybdenum (Mo) | 4.00 - 5.00 | Solid solution strengthening. |
| Niobium (Nb) | 1.80 - 2.80 | Improves dimensional stability at heat. |
| Titanium (Ti) | 0.50 - 1.00 | Facilitates precipitation hardening. |
2. Mechanical properties of Inconel 713C at 1800°F (982°C)
| Property | Room Temp | at 1800°F (982°C) |
| Tensile Strength (UTS) | 860 MPa | 345 MPa |
| Yield Strength (0.2%) | 760 MPa | 275 MPa |
| Stress Rupture (152 MPa) | - |
≥30 Hours Life |
Click to download the Inconel 713C alloy PDF file now
3. Features of Inconel 713C Nickel-Based Tubes
Features of Inconel 713C Nickel-Based Tubes
Excellent High-Temperature Performance: Inconel 713C nickel-based tubes can operate continuously above 800°C and withstand short-term high temperatures up to 1000°C. They exhibit excellent creep resistance and fatigue resistance.
Strong Corrosion Resistance: Inconel 713C nickel-based tubes possess high resistance to oxidation, sulfidation, and salt spray corrosion. They are suitable for applications involving sulfur-containing fuels and acidic media.
Stable Mechanical Properties: Reinforced by the γ' phase, Inconel 713C nickel-based tubes maintain high tensile strength and hardness at high temperatures and exhibit good thermal shock resistance.
High Processing Difficulty: Due to its high degree of alloying, Inconel 713C nickel-based tubes require specialized welding techniques (e.g., electron beam welding) and heat treatment processes (e.g., solution treatment + aging treatment).
4. Applications of Inconel 713C Nickel-Based Tubes
In Aerospace: Inconel 713C nickel-based tubes are used in turbine engine combustion chamber components, exhaust nozzles, and high-temperature piping.
In the Energy Industry: Inconel 713C nickel-based tubes are used in hot-end piping of gas turbines, heat exchanger tubes in nuclear reactors, and furnace tubes in petrochemical cracking furnaces.
In Industrial Heating: Inconel 713C nickel-based tubes are used as radiant tubes in high-temperature heat treatment furnaces and heat-resistant components in sintering equipment.
5. Common dimensions and properties of Inconel 713C pipes
|
Parameter |
Typical Range / Value |
Remarks |
|
Outer Diameter (OD) |
6 mm – 150 mm |
Custom sizes available |
|
Wall Thickness (WT) |
1 mm – 15 mm |
Adjustable for pressure/temperature needs |
|
Length |
1 m – 6 m (standard) |
Custom lengths or coiled tubing possible |
|
Standard |
ASTM B163 / AMS 5381 |
Common in aerospace & petrochemical industries |
|
Temperature Range |
-200°C to 1000°C (short-term) |
Long-term use recommended ≤ 850°C |
|
Tensile Strength |
≥ 850 MPa (room temp.) |
Maintains high strength at elevated temps |
|
Yield Strength (0.2%) |
≥ 550 MPa (room temp.) |
|
|
Elongation |
≥ 20% |
Indicates material ductility |
|
Surface Finish |
Pickled, Polished, or Machined |
Selected based on corrosion/assembly needs |
6. Inconel 713C Alloy Machining and Inspection Methods
To ensure your Core Hot-End Parts perform under extreme pressure, we employ advanced Precision Machining and rigorous NDT testing.
| Process Type | Method | Purpose |
| Manufacturing | Vacuum Induction Melting (VIM) | Ultra-low gas content (O, N < 10ppm). |
| Shaping | Deep Hole Drilling / CNC Turning | Creating precision hollow dimensions. |
| Surface Finish | Centerless Grinding | Achieving Ra 0.8 or better. |
| NDT Testing | FPI (Fluorescent Penetrant) | Detecting surface micro-cracks. |
| NDT Testing | X-Ray / Radiography | Ensuring zero internal porosity. |
Why Choose Gnee as Your Nickel-Based Alloy Supplier
✅️Technical Sales Team: We don't just take orders; we help you optimize your drawings for the unique machining properties of 713C.
✅️Comparative RFQs: We provide side-by-side cost analysis between machined blanks and cast-to-size parts to fit your budget.
✅️Aerospace Grade Quality: Every component comes with a Full Traceability MTC 3.1, ensuring compliance with global engine manufacturer specs.
Gnee Steel 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 inconel 713C Product Packing
Contact us for the latest export price quote for 713C Alloy
FAQ
Q: Can I get Inconel 713C "tubes" in 6-meter lengths?
A: No. Since they must be machined from cast bars or individually cast, the maximum length is typically limited to 1000mm - 1200mm. For longer requirements, we recommend a modular design using mechanical couplings.
Q: Why use machined 713C instead of Inconel 625 pipes?
A: Inconel 625 pipes are great for corrosion, but they will fail (creep) at 1000°C under load. Inconel 713C hollow sections are mandatory for rotating or high-stress core parts.
Q: Do you offer wholesale pricing for annual supply?
A: Yes. We specialize in Annual Supply Contracts for OEM partners, providing fixed Wholesale Prices and dedicated production slots for your hollow blanks.
