Baoji Fairy Titanium Industry Co., Ltd. is one of the leading manufacturers and suppliers of astmb348 astmb381 forged titanium fan shaft in China. Welcome to wholesale bulk high quality customized products made in China here from our factory. Good service and low price are available.
Products Description Tel：0917-3664600
Titanium fan shafts primarily refer to the central rotating shafts made of titanium alloy, used in various types of fans (especially high-performance industrial fans, electronic device cooling fans, and aircraft engine fans). While they may not be discussed as frequently as fan blades or fan ribs made of titanium alloy, as a core component of fan rotation, their performance directly determines the reliability and lifespan of the entire device.
Product features:
High specific strength: Its strength is close to that of steel, but its density is about 60% of steel (approximately 4.5 g/cm³), resulting in a much higher specific strength than most metallic structural materials. Replacing steel shafts with titanium shafts significantly reduces weight, lowers rotational inertia, and improves response speed.
Excellent corrosion resistance: It exhibits strong resistance to humid air, seawater, and various acids, alkalis, and chloride media, enabling it to operate stably in harsh environments for extended periods.
Specification Tel：0917-3664600
| Grade | Titanium Gr2 Gr5 Gr7 Gr9 Gr12 |
| Size | Customized as request |
| Surface | Titanium bright surface |
| Standards |
ASTM B348, ASTM B381 |
When manufacturing a titanium fan shaft, different titanium alloy grades are selected based on specific requirements.
| Grade | Alloy Type | Main Characteristics and Typical Applications |
|---|---|---|
| Gr5/TC4 | α+β type | The most widely used "flagship" titanium alloy, accounting for 75%-85% of total usage, has excellent comprehensive performance. Used for aero-engine fan discs, blades, aircraft structural components, and medical devices. |
| Gr7/TA9 | α type | Contains palladium, offering exceptional corrosion resistance. Suitable for shafts and fasteners in highly corrosive environments. |
| Gr1, Gr2 | α type | Commercially pure titanium has good plasticity and corrosion resistance. Commonly used in chemical and civilian applications where strength requirements are moderate. |
prdocuts pictures Tel：0917-3664600
Other Advantages of the Titanium Fan Shaft
High precision and high rigidity: Precision machining, combined with high-precision dynamic balancing, ensures excellent geometry and dynamic balance performance. Optimised design provides sufficient rigidity to guarantee operational stability.
Non-magnetic and biocompatible: Titanium alloys are non-magnetic and are among the most biocompatible metals, being non-toxic, harmless, and non-allergenic, making them suitable for use in specific sensitive environments.
applications of Titanium fan shaft Tel: 0917- 3664600
Based on the above characteristics, titanium fan shafts are primarily used in the following three major fields:
- Aerospace: This is the core application area for titanium fan shafts. In key rotating components such as fan parts and compressor discs of aero engines, the overall application of titanium alloys can reduce aircraft weight by approximately 30%. Furthermore, more advanced titanium-based composite (TMC) fan shafts are under development, aiming to achieve even higher performance.
- High-end Industrial Equipment: Used in industries such as petrochemicals, marine engineering, and power generation to manufacture core shaft components for equipment such as corrosion-resistant pumps and marine propulsion systems.
- Precision Cooling and Special Equipment: Plays a crucial role in miniature high-speed cooling fans, UAV power systems, and certain specialised diving equipment, where durability and lightweight requirements are extremely high.
Comprehensive Comparison – Titanium Shaft vs. Other Material Shafts Tel：0917-3664600
| Performance Indicator | Titanium Shaft (Gr5) | Stainless Steel Shaft (304) | Alloy Steel Shaft (40Cr) | Aluminium Alloy Shaft (7075) |
|---|---|---|---|---|
| Density (g/cm³) | 4.43 | 7.93 | 7.85 | 2.78 |
| Tensile Strength (MPa) | 895 | 520 | 980 | 570 |
| Specific Strength (Strength/Density) | 202 | 65.6 | 124.8 | 205 |
| Elastic Modulus (GPa) | 110 | 193 | 206 | 71 |
| Corrosion Resistance | Excellent | Moderate | Poor (requires coating) | Moderate (after anodising) |
| Cost Index | High (10) | Low (1) | Low (1.2) | Medium (3) |
| Applicable Temperature Range | -250°C ~ 500°C | -50°C ~ 300°C | -40°C ~ 400°C | -80°C ~ 150°C |
Packing And Shipping Tel: 0917- 3664600
Labelling and Marking
Clear shipping labels must be affixed to the outside of the packaging box, including at least:
Product Information: Specifications, brand, batch number, quantity.
Shipping Instructions: Packaging and storage/transportation pictorial markings such as "Upwards," "Keep Dry," "Handle with Care," "Centre of Gravity," and "Lifting Position," should comply with GB/T 191.
Transportation selection
1-10kg cartons are shipped by express, FedEx, or DHL.
10-70kg export wooden crates are shipped by express or air.
Over 70kg of wooden crates are shipped by air or sea.
FAQ
Q: 1. Are titanium shafts really more cost-effective than steel shafts, given their high price?
A: From an initial purchase cost perspective, titanium shafts are typically 5 to 10 times more expensive than high-quality steel shafts, or even higher. However, their total lifecycle cost is often lower. The reasons are as follows:
Lightweight:** Titanium has a density of approximately 4.5 g/cm³ (steel approximately 7.8 g/cm³), reducing rotational inertia and motor energy consumption, especially significant for high-speed or frequently start-stop equipment.
Maintenance-Free: In humid, salt spray, and weakly acidic/alkaline environments, titanium shafts require no plating or rust prevention treatment, saving on regular maintenance and replacement costs.
Long Lifespan: Titanium shafts have high fatigue strength and no risk of electrochemical corrosion, resulting in a lifespan several times that of steel shafts.
Conclusion: Suitable for applications requiring high reliability, long-term maintenance-free operation, or prioritising weight reduction (e.g., aerospace, deep-sea, chemical pumps); not recommended for low-end civilian products where cost is extremely sensitive.
Q: 2. Since titanium shafts are less hard than steel, will they be less wear-resistant?
A: While the Brinell hardness (approximately 200-340 HB) of pure titanium and common titanium alloys (such as Gr2 and Gr5) is indeed lower than that of hardened steel (500-650 HB), this does not directly equate to poor wear resistance. Wear resistance can be improved through the following methods:
Surface treatment: Micro-arc oxidation (MAO), physical vapour deposition (PVD) with diamond-like carbon (DLC) or TiN coatings can achieve a surface hardness exceeding 1000 HV.
Choosing the right grade: Gr5 titanium alloy, after heat treatment, has high strength and good lubrication, fully meeting the wear requirements of bearing seats, journals, etc.
Practical example: Titanium alloy fan shafts in aero-engines often undergo surface strengthening treatment at the bearing mating points, resulting in a service life of tens of thousands of hours.
Conclusion: Direct dry grinding or grinding against hard materials will cause wear; however, by designing a matching friction pair (such as a titanium shaft + copper bushing or coated shaft) and lubrication, wear resistance can meet the requirements of most operating conditions.
Q: 3. Will titanium shafts suffer from hydrogen embrittlement or high-temperature oxidation?
A: Hydrogen embrittlement: Titanium has low hydrogen solubility at room temperature, but prolonged exposure to high-temperature (>300℃) hydrogen-rich environments (such as electrolysis or acidic reactions) may cause it to absorb hydrogen and form hydrides, leading to embrittlement. There is no risk in normal atmospheric or water environments. If used in special process media, grades with low hydrogen embrittlement sensitivity (such as Gr7 or β-type titanium alloys) must be selected.
High-temperature oxidation: Titanium reacts with oxygen above 600℃ to form a brittle oxide layer (rutile). However, the operating temperature of equipment such as fans and pumps is usually below 300℃, making it completely safe. Titanium shafts in aero-engines also control surface temperature through heat-insulating coatings or active cooling.
Conclusion: In normal industrial and electronic heat dissipation scenarios, there is no need to worry about hydrogen embrittlement and oxidation.
Q: 4. What are some successful practical applications of titanium shafts?
A: Aero-engines: The fan rotor shafts of models such as CFM56 and GE90 use Gr5 or Ti-6Al-4V, reducing weight while withstanding tens of thousands of hours of cyclic loads.
Deep-sea submersible thrusters: Utilise Gr2 pure titanium shafts, resistant to seawater corrosion, requiring no coating.
Chemical centrifugal pumps: Pump shafts transporting chloride-containing media; the original stainless steel shafts failed in a year due to pitting corrosion, but after replacement with Gr7 titanium shafts, they have operated continuously for 6 years without any issues.
High-end PC cooling fans: Some custom-made water-cooled pump motor shafts use titanium alloy to reduce rotor weight and vibration noise.
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Contact information:
Tel: +86-0917- 3664600
WhatsApp: +8618791798690
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