What Makes In738LC Alloy Powder a Top Choice for High-Temperature Turbine Components

Published by HUAXIAO TECH manufacturer

As turbine efficiency demands continue to rise, the need for materials with superior high-temperature performance becomes critical. In738LC alloy powder stands out as a nickel-based superalloy engineered for durability in hot-section components of gas turbines and jet engines.

Proven High-Temperature Capability

In738LC (low-carbon version of Inconel 738) is strengthened through a γ′ (gamma prime) precipitation mechanism and optimized for long-term performance at temperatures up to 980°C. Key features include:

• Excellent creep and stress rupture resistance

• Stable mechanical properties at elevated temperatures

• Resistance to hot corrosion and oxidation

This makes it a preferred choice for turbine vanes, nozzles, and combustor hardware in both industrial and aerospace gas turbines.

Composition and Metallurgical Benefits

In738LC typically contains:

• Nickel (Ni), Chromium (Cr), and Cobalt (Co) as the matrix

• Aluminum (Al) and Titanium (Ti) to promote γ′ strengthening

• Tungsten (W), Molybdenum (Mo), and Tantalum (Ta) for solid-solution hardening

• Lower carbon content for improved weldability and reduced cracking during additive manufacturing

Optimized for Additive Manufacturing

HUAXIAO TECH produces In738LC alloy powder through vacuum gas atomization, ensuring:

• High sphericity and clean surface morphology

• Controlled particle size distribution (typically 15–53 μm for AM)

• Low oxygen and nitrogen content for better mechanical reliability

The powder supports laser powder bed fusion (LPBF), electron beam melting (EBM), and direct energy deposition (DED).

Application Scenarios

• Industrial and aerospace gas turbine hot-section parts

• Turbine vanes and blades

• Combustor liners and shrouds

• Components requiring resistance to hot corrosion and cyclic thermal loads

Key Advantages

• Outstanding performance in long-term high-temperature service

• High strength and oxidation resistance up to 980°C

• Optimized composition for additive manufacturing and welding

• Reliable microstructure with minimal risk of hot cracking

Frequently Asked Questions (FAQ)

Q1: What differentiates In738LC from In738?
A1: In738LC has a lower carbon content, which improves weldability and makes it more suitable for AM applications with reduced risk of cracking.

Q2: Can this powder be used in LPBF systems?
A2: Yes, In738LC is compatible with LPBF, EBM, and other metal AM systems, and shows excellent printability with post-heat treatment.

Q3: What is the typical particle size range?
A3: Standard particle sizes are 15–53 μm for AM. Customized ranges are available upon request.

Conclusion

In738LC alloy powder is a trusted solution for manufacturing turbine components that operate in extreme heat and stress environments. Its mechanical strength, corrosion resistance, and AM compatibility make it a top choice for engineers and manufacturers.

To source high-quality In738LC alloy powder or request technical consultation, contact HUAXIAO TECH today.