Why 13Cr5Al0.5Y Alloy Powder Is Ideal for High-Temperature Filtration Applications

Published by HUAXIAO TECH manufacturer

In demanding high-temperature environments such as waste gas filtration and industrial kilns, material stability and oxidation resistance are essential. 13Cr5Al0.5Y alloy powder provides excellent high-temperature strength and oxidation protection, making it the ideal candidate for sintered metal filters and porous structures used in extreme applications.

Engineered for Oxidation Resistance

The alloy's key composition—13% chromium, 5% aluminum, and trace 0.5% yttrium—forms a dense and adherent alumina (Al₂O₃) layer on the surface during service. This enables:

• Long-term oxidation resistance up to 1200°C

• Protection against corrosive gases like SO₂ and CO

• Self-healing surface under thermal cycling

Such oxidation performance is critical in environments like diesel particulate filters and flue gas purification.

Excellent Sintering Behavior

13Cr5Al0.5Y alloy powder is optimized for powder metallurgy (PM) and metal injection molding (MIM):

• Stable particle morphology ensures uniform sintering

• Narrow size distribution (typically 15–53 μm or finer) allows for tight porosity control

• High green strength and dimensional stability

This enables the production of sintered filter elements with tailored permeability and mechanical integrity.

Reinforced by Reactive Element Effect (REE)

Yttrium, though present in only 0.5%, significantly improves performance by:

• Enhancing alumina scale adhesion

• Slowing diffusion rates of oxygen and metal ions

• Reducing spallation under thermal shock

This makes the alloy suitable for cyclic operations in harsh combustion environments.

Application Scenarios

• High-temperature sintered metal filters

• Diesel and gas turbine exhaust purification

• Catalyst carrier supports in chemical processing

• Porous structural components for energy systems

Benefits Summary

• Excellent high-temperature oxidation resistance

• Stable performance under thermal cycling

• Good sinterability and formability in PM/MIM

• Resistance to corrosive industrial gases

Frequently Asked Questions (FAQ)

Q1: What sintering conditions are recommended?
A1: Vacuum or controlled atmosphere sintering at 1200–1250°C is generally used for optimal porosity and strength.

Q2: Is the powder compatible with additive manufacturing?
A2: For laser-based AM, finer and spherical grades are available upon request, but it is mainly used in sintered PM forms.

Q3: What porosity levels can be achieved?
A3: Porosity can be tailored between 30–60% depending on powder size and sintering profile.

Conclusion

13Cr5Al0.5Y alloy powder is a high-performance solution for high-temperature applications that require both mechanical stability and oxidation resistance. Its sintering characteristics and protective alumina-forming capability make it an ideal material for next-generation filtration and catalytic systems.

For custom particle size, technical support, or bulk supply, contact HUAXIAO TECH to learn how this alloy can enhance your application.