Why 800H Alloy Powder Is Ideal for High-Temperature Additive Manufacturing

Published by HUAXIAO TECH manufacturer

In demanding environments such as power generation, chemical processing, and aerospace, material stability at high temperatures is vital. 800H alloy powder provides outstanding heat resistance, mechanical strength, and metallurgical stability, making it a top-tier material for 3D printing and metal injection molding in extreme-service components.

Engineered for Elevated Temperature Applications

800H is an iron-nickel-chromium alloy designed to withstand long-term exposure to temperatures above 600°C. Its powder form enables advanced manufacturing techniques with the following key characteristics:

• Excellent strength and oxidation resistance up to 1100°C

• Stable austenitic structure, resisting thermal fatigue and creep

• Good weldability and low risk of cracking during processing

This alloy is specifically suitable for heat exchangers, superheaters, reformer tubes, and turbine parts.

Consistency and Reliability in Additive Manufacturing

800H alloy powder produced by gas atomization offers:

• High sphericity and low oxygen content

• Excellent powder flow for laser powder bed fusion (LPBF) and electron beam melting (EBM)

• Uniform microstructure after sintering or printing

These features allow precise control of dimensional accuracy and surface finish for components subjected to thermal cycling.

Resistant to Corrosive and Oxidizing Environments

The high chromium and nickel content in 800H provides:

• Excellent resistance to oxidation, carburization, and nitridation

• Long-term mechanical stability in sulfur-bearing atmospheres

• Reduced scaling and material degradation in high-temperature furnaces and reactors

This performance makes 800H ideal for chemical industry parts, heat treatment fixtures, and exhaust manifolds.

Application Scenarios

• Furnace components and radiant tubes

• Steam reformer and cracker tubes

• Aerospace engine insulation and seals

• Petrochemical heat exchangers

Benefits Summary

• Outstanding thermal strength and oxidation resistance

• Compatibility with laser and electron beam AM processes

• Excellent surface quality and sinterability

• Reliable structural integrity in cyclic thermal conditions

Frequently Asked Questions (FAQ)

Q1: How does 800H differ from 800 and 800HT?
A1: 800H contains stricter control over carbon and grain size, improving its creep resistance at high temperatures compared to alloy 800. Compared with 800HT, it has a similar structure but lower aluminum and titanium levels.

Q2: Is 800H powder suitable for metal injection molding (MIM)?
A2: Yes, with appropriate particle size distribution (typically 5–25 μm), it supports MIM and produces dense, corrosion-resistant parts.

Q3: What particle sizes are available?
A3: HUAXIAO TECH offers standard 15–53 μm for AM and 5–25 μm for MIM. Custom sizing is available upon request.

Conclusion

800H alloy powder provides the perfect combination of high-temperature performance, mechanical durability, and corrosion resistance. It empowers engineers to manufacture reliable components for the harshest environments using advanced metal powder technologies.

For customized solutions and technical consultation, contact HUAXIAO TECH — your trusted high-performance alloy powder manufacturer.