MHC Alloy Ring

1. What's MHC Alloy Ring?
MHC alloy ring (Molybdenum Hafnium Carbon Alloy Ring) is a high-performance high-temperature structural ring material made with high-purity molybdenum as the matrix. It is produced by adding hafnium (Hf) and carbon (C) through powder metallurgy processes. The in-situ generated HfC dispersion strengthening phase overcomes the high-temperature softening limitations of pure molybdenum, making it an important high-temperature load-bearing rotary component in modern industrial ultra-high temperature sealing, insulation, and fluid control systems.

2. Advantages of CTIA's MHC Alloy Ring
(1) Tensile strength approximately 600–900 MPa at room-temperature, maintaining about 300–500 MPa at 1000°C.
(2) HfC dispersion phase effectively suppresses dislocation slip and high-temperature creep deformation.
(3) Recrystallization temperature can be raised above 1500°C, significantly reducing high-temperature grain growth rate.
(4) Thermal conductivity approximately 120–150 W/(m·K), offering superior thermal diffusion capability compared to most refractory alloys.
(5) Low thermal expansion coefficient (5×10⁻⁶/K), providing excellent thermal shock resistance and cyclic thermal stability.

3. Applications of CTIA's MHC Alloy Ring
(1) Semiconductor Equipment Thermal Field: Structural support rings for diffusion furnaces, MOCVD (Metal-Organic Chemical Vapor Deposition), and epitaxial equipment.
(2) Vacuum High-Temperature Furnaces: Structural rings in heating zones, heat shield rings, and load-bearing positioning rings.
(3) Electron Beam / Ion Beam Equipment: High-temperature target support rings and beam stabilization structural parts.
(4) Aerospace: Engine hot-end structural rings, heat-resistant supports, and insulation assemblies.
(5) High-Temperature Material Testing Equipment: Thermal cycling test fixtures, load-bearing rings, and positioning structures.
(6) Metal Hot Working Equipment: Mold guide rings, limit rings, and high-temperature assembly structural parts.
(7) Nuclear Energy and Special Energy Equipment: High-temperature sealing rings and structural support components in irradiation environments.

4. Specifications of CTIA's MHC Alloy Ring
Outer Diameter: 10–300 mm, customizable
Inner Diameter: 5–250 mm, customizable
Thickness: 0.5–50 mm, customizable
Surface Condition: Turned, ground, polished, etc.

With nearly 30 years of deep expertise in molybdenum and molybdenum alloy manufacturing, CTIA optimizes powder metallurgy and hot working processes to achieve precise control of microstructure and dimensional accuracy. CTIA’s MHC alloy is available in various forms, including plates, sheets, rods, discs, tubes, rings, and customized components. Thanks to the HfC dispersion-strengthening mechanism, CTIA’s MHC alloy provides excellent high-temperature strength retention and good microstructural stability, enabling reliable operation in harsh thermal environments and meeting the material consistency requirements of high-end equipment.

For any inquiry, please contact molybdenum and molybdenum alloy manufacturer: CTIA GROUP

Email: sales@chinatungsten.com

Tel: 0086 592 5129696 / 0086 592 5129595

Website: www.molybdenum.com.cn

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