When purchasing eyeglasses, the various terminologies related to titanium materials can be overwhelming: pure titanium, titanium alloy, lightweight titanium, featherlight titanium, and more. What do these different terms actually mean? And how can we select high-quality titanium eyeglasses?
From a manufacturing perspective, titanium eyeglasses come in various processes, including sheet titanium, titanium wire, lightweight titanium series, and featherlight titanium series. These terms mainly refer to different forging or cutting techniques.
Sheet Titanium: Similar to sheet metal, it is cut from a titanium sheet. It has a strong linear appearance and is suitable for formal occasions.
Titanium Wire: It is a titanium alloy material composed of titanium, zirconium, iron, and other elements. It offers high strength, corrosion resistance, and a stylish and vibrant frame.
Lightweight Titanium Series, Featherlight Titanium Series, etc.: These terms represent a combination of brand and manufacturing techniques, usually indicating higher quality.
Titanium Purity and Types significantly impact the performance and appearance of titanium eyeglasses.
Pure Titanium: When the titanium purity reaches 90% or higher, it can be called pure titanium eyeglasses. Pure titanium has low elasticity but high strength, making it commonly used for sheet titanium frames.
Beta Titanium: Although not as pure as pure titanium, it offers superior strength, fatigue resistance, and environmental corrosion resistance.
Titanium Alloy: Any material containing titanium can be called a titanium alloy, and its specific properties depend on the alloy composition and brand.
How to Identify Titanium Eyeglasses
Look for Labels: The frame lining or temple arms usually bear labels such as Titanium (for pure titanium), β-Titanium (for beta titanium), Titanium Alloy (for titanium alloy), and so on.
Observe the Nose Pad Welding Points: Pure titanium materials are welded using oxygen-free welding, resulting in a "step-like" welding trace. Alloy materials are spot-welded, leaving a "slope-like" welding trace.
Pay Attention to Plating Techniques: "IP" refers to vacuum plating, and frames with vacuum plating generally have a longer lifespan.
Recognize Semi-Titanium: Semi-titanium usually refers to temples made of titanium or beta titanium, while the frame portion is made of an alloy. To summarize, when choosing titanium eyeglasses, it is not necessary to get caught up in various titanium terminologies. The key factors lie in the "Titanium" label on the temple arms and the "step-like" welding trace at the nose pad. As long as these two aspects meet the requirements, the quality is generally satisfactory.
