CTIA’s TZM Alloy Nut

1. What's TZM Alloy Nut?
TZM Alloy Nut (Titanium Zirconium Molybdenum Alloy Nut) is a high-temperature internal threaded fastening component featuring excellent high-temperature strength, creep resistance, and dimensional stability. It maintains thread accuracy, thread engagement stability, and connection reliability during long-term high-temperature service, and is mainly used with bolts for reliable fastening of equipment components in high-temperature, vacuum, and thermal cycling environments. CTIA’s TZM nut uses molybdenum (Mo) as the matrix with titanium (Ti: 0.40%–0.55%), zirconium (Zr: 0.06%–0.12%), and carbon (C: 0.01%–0.04%) additions to form TiC and ZrC dispersion-strengthened phases. It is manufactured through powder metallurgy and precision internal thread machining processes.

2. Advantages of CTIA’s TZM Alloy Nut
(1) High-temperature fastening reliability: With excellent high-temperature strength and creep resistance, achieving a tensile strength of 600–900MPa, the nut maintains stable preload under long-term high-temperature loading, reducing thread loosening, connection failure, and structural deformation risks.

(2) Excellent high-temperature dimensional stability: With a recrystallization temperature of approximately 1350–1450°C, the nut suppresses microstructural changes and dimensional variation at elevated temperatures, ensuring thread fitting accuracy and long-term assembly reliability.

(3) Excellent thermal cycling resistance: With a coefficient of thermal expansion of approximately 5.5–5.9×10⁻⁶/K, the nut reduces thermal stress caused by expansion differences during rapid heating and cooling cycles, making it suitable for repeated fastening applications under thermal cycling conditions.

(4) High-precision thread machining capability: Through precision CNC machining and internal thread processing, thread pitch, dimensional tolerances, and surface roughness are strictly controlled. M2–M30 threads and customized specifications can be manufactured to meet high-precision assembly requirements.

(5) Excellent high-temperature vacuum compatibility: With low vapor pressure, low outgassing characteristics, and excellent high-temperature stability, the nut maintains clean and reliable connections in vacuum and inert atmosphere environments, making it suitable for critical fastening applications in high-temperature furnaces, semiconductor equipment, and vacuum systems.

3. Applications of CTIA’s TZM Alloy Nut
CTIA’s TZM alloy nut is mainly used for precision fastening connections in high-temperature, vacuum, and thermal cycling environments, including:

(1) Vacuum high-temperature furnaces: Used for fastening heating components, heat shields, support structures, and thermal field components inside furnaces for long-term high-temperature operation.

(2) Semiconductor manufacturing equipment: Used for wafer heat treatment systems, vacuum chambers, and high-temperature structural components to provide stable fastening for critical parts.

(3) Sapphire and crystal growth equipment: Used for internal furnace structure connections to maintain reliable fixation during high-temperature melting and crystal growth processes.

(4) Assembly of molybdenum and tungsten high-temperature components: Used for connecting TZM plates, TZM rods, tungsten products, and other refractory metal components to improve overall structural stability.

(5) Aerospace and high-temperature testing equipment: Used in precision structural connections requiring high-temperature resistance, low thermal expansion, and long-term reliability.

4. Specifications of CTIA’s TZM Alloy Nut
(1) Types: Hex nuts, cylindrical nuts, square nuts, and customized designs

(2) Dimensions: Customized outer diameters, heights, and thread sizes available

(3) Customization: Special structures and non-standard configurations available according to application requirements

With nearly 30 years of experience in molybdenum and molybdenum alloy manufacturing, CTIA GROUP has capabilities in TZM material development, powder metallurgy production, and precision machining. Through strict control of alloy composition and sintering densification, CTIA supplies high-quality TZM plates, TZM rods, and customized components. With high-precision internal thread machining capabilities, CTIA also provides high-performance TZM nuts with micro-scale structures and non-standard dimensions to meet long-term reliable fastening and structural requirements in high-temperature, vacuum, and precision equipment applications.

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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