Mar-m-247

Dong-A Special Metals, Inc. introduces MAR-M247, a precision-cast, nickel-based superalloy designed for extreme high-temperature environments. Known for its exceptional oxidation resistance, creep resistance, and mechanical strength, MAR-M247 is a trusted material in the aerospace and power generation industries.


What is MAR-M247?

Developed by General Electric (GE), MAR-M247 is a nickel-based superalloy engineered for long-term performance in conditions ranging from 980°C to 1100°C. It features a complex alloy composition:

- Nickel (Ni) – base metal

- Chromium (Cr), Cobalt (Co), Molybdenum (Mo), Tungsten (W) – provide oxidation resistance and strength

- Aluminum (Al), Titanium (Ti), Tantalum (Ta), Hafnium (Hf) – enhance precipitation strengthening and thermal stability

This combination enables superior creep rupture strength, tensile properties, and oxidation resistance over extended periods.


Key Applications of MAR-M247

Thanks to its outstanding thermal performance, MAR-M247 is used in:

- Aircraft engine components: turbine blades, vanes, heat shields

- Industrial gas turbines: blades, nozzles, combustion chambers

- Space propulsion systems: high-heat nozzles and chambers

- Next-generation energy systems: materials exposed to combustion gases and thermal cycling


Advanced Manufacturing and Recyclability

MAR-M247 is typically manufactured via vacuum precision casting, allowing for complex shapes and minimizing oxide contamination. This ensures high reliability in:

- Thermomechanical environments

- High-speed rotating shafts

- Combustion-exposed metal parts


Recycling Considerations for MAR-M247

Given the high cost and strategic value of its alloying elements, MAR-M247 scrap is highly recyclable. However, strict impurity control (oxygen, nitrogen, carbon) is critical to preserving its high-temperature properties.

Recycling technologies used:

- Vacuum Induction Melting (VIM)

- Vacuum Arc Remelting (VAR)

- Plasma Arc Melting (PAM)

Recycled scrap is remelted into high-purity ingots, then reused for precision casting or high-performance alloy production.


A Strategic Material for the Future

MAR-M247 continues to be a cornerstone material for aerospace and defense industries, especially where high heat and stress are constant. Its potential in space development and next-generation turbines positions it as a critical alloy in the transition to advanced, sustainable technologies.



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Contact Us

Homepage : http://www.dongaspecial.co.kr/

Mobile : +82-10-6367-7392

Company Catalog Download :

1) Eng : https://blog.naver.com/dongaspecial/223683563148

2) Kor : https://blog.naver.com/dongaspecial/223683558947

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Product Brochure Download :

1) Eng : https://blog.naver.com/dongaspecial/223683548933

2) Kor : https://blog.naver.com/dongaspecial/223683546036

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"E-mail"

1) sales@dongasepcial.co.kr

2) adenjang@dongasepcial.co.kr

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2) Wechat ID : dongaspecial, adenjang

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6) Zalo : +821094142752

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Ltd. is selling titanium (titanium) sponge substitutes for research and alloying on its smart store in order to localize the material in Korea. We look forward to your interest and support. Thank you.


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