Advanced sintering, shape profiles, and protective mechanical casings tailored for aerospace, robotics, and industrial environments.
In high-speed rotordynamics, subsea oil exploitation, and aerospace micro-actuation, permanent magnetic assemblies are regularly subjected to intense centrifugal and physical stresses. Utilizing materials with poor yield strength or high magnetic susceptibility leads to casing deformation, magnetic leakage, and system failure. This is where titanium alloys become critical.
Titanium Grade 5 (Ti-6Al-4V) and Grade 2 (Commercially Pure) deliver an ideal balance of mechanical features: exceptional yield-to-density ratio, low thermal expansion coefficient, extreme corrosion resistance, and complete magnetic transparency. Implementing titanium sleeves in high-speed permanent magnet motors prevents radial expansions that could destroy stator-rotor clearance gaps.
Analytical matrix comparing Commercially Pure Titanium and popular Alloys utilized in structural magnet protective sleeves.
| Titanium Grade | Yield Strength (0.2% Offset, MPa) | Tensile Strength (UTS, MPa) | Elongation at Break (%) | Modulus of Elasticity (GPa) | Density (g/cm³) |
|---|---|---|---|---|---|
| Grade 1 (Highly Ductile CP) | 170 - 240 | 240 - 350 | 24 - 30 | 103 | 4.51 |
| Grade 2 (Standard Structural CP) | 275 - 410 | 345 - 480 | 20 - 25 | 105 | 4.51 |
| Grade 5 (Ti-6Al-4V High Strength) | 880 - 950 | 950 - 1050 | 10 - 15 | 114 | 4.43 |
| Grade 23 (Ti-6Al-4V ELI Medical/Aerospace) | 830 - 870 | 860 - 920 | 12 - 18 | 114 | 4.43 |
*Note: Values represent typical ambient characteristics at 20°C. Custom cold-rolling and heat-treatment profiles can alter these parameters to meet specific rotor load metrics.
Established at the turn of the millennium in 1999, Zhejiang Laysun Magnetics Ltd. has evolved from a specialist workshop to a nationally recognized high-tech manufacturing leader. With our main industrial base spanning over 100,000 square meters in Sichuan, and sales headquarters in Hangzhou, Zhejiang, we combine materials science with precision metal machining.
We do not simply manufacture magnets; we specialize in engineering high-reliability assemblies. Our operations combine magnetic material technology with structural metallurgy, such as high-tensile titanium sleeves, protecting brittle NdFeB blocks under mechanical stresses. This multidisciplinary engineering approach allows our clients in the automotive, aerospace, and medical fields to push their mechanical designs to their limits.
How we guarantee regulatory compliance and structural accountability across European, North American, and Asian markets.
Aerospace-grade and standard manufacturing protocols ensuring batch consistency and material traceability.
Mill test certifications detailing actual chemical analysis and mechanical verification for all structural sleeves.
100% compliant materials ensuring safety for automotive, consumer electronics, and medical implants.
Adhering to automotive core tools (APQP, FMEA, MSA, SPC, PPAP) for EV motor integrations.
Fully compliant with international testing and material verification requirements.
China commands over 80% of the rare earth elements (REE) refining supply chain and is a world leader in raw titanium sponge reduction. Zhejiang Laysun Magnetics Ltd. capitalizes on this geographic concentration by integrating upstream raw materials sourcing with advanced downstream precision engineering. This direct coordination removes third-party markups and guarantees supply security.
Our modern manufacturing facility features vacuum double-chamber induction melting, fluid-bed jet milling, automatic isostatic pressing, and advanced CNC machining centers. This allows us to manufacture complex geometries and custom sizes without relying on external contracting. By keeping the processes under one roof, we minimize production times and enforce strict quality control at every phase of production.
Furthermore, our logistics framework supports multi-modal transport protocols, offering fast air freight, cost-effective ocean shipment, and rail networks direct to European, American, and Asia-Pacific delivery points.
Watch our factory production processes, highlighting the precise integration of magnetic material sintering, automated dimensional calibration, and strict quality control protocols.
We subject every batch to destructive testing: tensile testing, ultrasonic imaging, and temperature endurance checks. This guarantees that your components perform reliably, even under demanding environmental conditions.
Our materials power high-efficiency systems across diverse sectors worldwide.
Headquartered in Hangzhou, Zhejiang, and supported by our manufacturing facility in Sichuan, we operate a global supply network. We maintain partnerships with regional logistics agencies in Europe, North America, and Southeast Asia to guarantee timely delivery and reliable local engineering support.
Our team works closely with engineering departments worldwide, tailoring physical and mechanical properties to the unique demands of each regional project.
Common technical questions from developers, quality officers, and procurement managers.
While Grade 304 or 316 Stainless Steel is non-magnetic, they present poor yield strength and higher electrical conductivity compared to Titanium. Grade 5 Titanium (Ti-6Al-4V) provides a yield strength of 880+ MPa, allowing thinner sleeve designs. This reduces the air gap width between the rotor and stator, which improves electromagnetic performance. In addition, its low electrical conductivity reduces eddy current heating, preventing thermal demagnetization of the neodymium cores.
Neodymium (NdFeB) magnets have a negative coefficient of thermal expansion (CTE) in the direction of magnetization. Titanium has a low CTE (approx 8.6 x 10^-6/K). Our engineering team designs interference fits that account for these thermal differences. This guarantees that the casing maintains contact pressure across the entire temperature range (-50°C to +150°C) without risking mechanical failure or cracking.
Every shipment is accompanied by a certified EN 10204 3.1 Mill Test Report detailing the chemical composition, yield strength, tensile strength, and elongation profiles. Additionally, we provide dimensional reports from our automated coordinate measuring machines (CMM) and magnetic flux verification certificates to ensure compliance with customer requirements.
For subsea and offshore applications, we utilize hermetically sealed Titanium Grade 2 or Grade 5 casings. The titanium forms a stable surface oxide film that resists corrosion in saltwater. When combined with advanced epoxy resin sealing and rubber-coated external barriers, this ensures long-term protection for the internal NdFeB magnets.
Further specifications, shapes, and mounting configurations for high-tech applications.
For inquiries about custom specifications, engineering support, or wholesale pricing, submit your details. Our sales engineering team will reply within 24 hours.
Laysun Magnetics