How does Inconel 713C compare with Inconel 718 in additive manufacturing applications?

How does Inconel 713C compare with Inconel 718 in additive manufacturing applications?

Inconel 713C and Inconel 718 are both nickel-based superalloys, but they are suited to different additive manufacturing priorities. In general, Inconel 718 is more widely used in superalloy 3D printing because it offers a more balanced combination of printability, strength, toughness, and post-processing maturity. Inconel 713C is more specialized for high-temperature service where oxidation resistance and elevated-temperature stability are more important than broad manufacturability.

1. Core Difference in Application Focus

The main difference is their engineering role in additive manufacturing:

• Inconel 718 is typically preferred for structurally loaded AM parts that require high strength, good toughness, and reliable post-heat-treatment performance

• Inconel 713C is more suitable for components exposed to sustained high temperatures, oxidation, and thermal cycling

This means Inconel 718 is often selected for broader industrial use, while Inconel 713C is considered when the thermal environment becomes more severe.

2. Printability and Process Window

For additive manufacturing, Inconel 718 generally has the advantage in processability. It is better known for stable parameter development in Powder Bed Fusion systems and is commonly used for production-grade metal AM.

As a result, Inconel 718 is usually the easier and lower-risk choice when a project needs proven AM process stability.

3. High-Temperature Performance Comparison

Inconel 713C becomes attractive when the operating environment is dominated by heat exposure. Compared with Inconel 718, it is more oriented toward:

• Elevated-temperature strength retention

• Oxidation resistance in hot gas environments

• Thermal stability in heat-exposed components

Inconel 718, by contrast, is extremely strong and versatile, but it is often chosen for parts where the balance between strength, manufacturability, and service temperature matters more than maximum hot-section capability.

4. Mechanical Performance Priority

In additive manufacturing applications, the two alloys are often separated by the type of loading they are expected to handle:

• Inconel 718: Better for general high-strength structural parts, brackets, housings, supports, and highly loaded hardware

• Inconel 713C: Better for thermally exposed parts where oxidation and creep resistance are more important than room-temperature toughness

This makes Inconel 718 a more versatile engineering alloy, while Inconel 713C is more of a heat-service specialist.

5. Post-Processing Requirements

Both alloys benefit from post-processing, but Inconel 718 has a more standardized additive manufacturing workflow. Typical routes include Heat Treatment, Hot Isostatic Pressing (HIP), and CNC Machining.

• Inconel 718 responds very well to strengthening heat treatments and is widely optimized for AM densification and finishing

• Inconel 713C also requires careful post-processing, but its heat-treatment route is usually more dependent on the final thermal-service target

For very harsh thermal environments, both may also require Thermal Barrier Coatings (TBC), especially in aerospace and energy applications.

6. Best-Fit AM Applications

7. Summary

In summary, Inconel 718 is generally the more versatile and widely adopted alloy for additive manufacturing because it offers better process maturity, balanced strength, and proven post-processing routes. Inconel 713C is more specialized and better suited for components that must survive more aggressive high-temperature and oxidation-heavy environments. If the priority is broad manufacturability and structural performance, Inconel 718 is usually the better choice. If the priority is hot-section thermal service, Inconel 713C may be more suitable.

For related information, see superalloy 3D printing, Inconel 718, Inconel 718 3D printing, and superalloy additive manufacturing technologies.