To determine whether a screw is made of titanium material, the following methods can be used:

1. Appearance recognition: Observe the appearance of the screws. Pure titanium screws and titanium alloy screws are similar to traditional stainless steel, copper, and iron screws, but high-end series titanium screws can reach a higher level. It has a beautiful appearance and sometimes emits a cool glow like a craft. Compared to iron screws and copper screws, titanium screws appear brighter with a cool glow.

2. Scratch test: In uncertain situations, you can lightly scratch the screw on the white ceramic. If the screw is made of titanium, it will leave gray scratches on the white porcelain. Stainless steel will not leave scratches on white porcelain. But it should be noted that some titanium products nowadays, in order to provide a better user experience, will undergo special hardening treatment on the head of the product, so that it is no longer easy to leave scratches.

3. Chemical testing: This is a more accurate method. The composition of the material can be determined through chemical reactions. For example, using nitric acid testing, pure titanium will instantly produce bubbles.

4. Price judgment: Due to the relatively high cost of titanium as a raw material for screws, the price is also a basis for judgment. If the price of the screw is found to be abnormally low, then it may not be a real titanium screw.

It should be noted that there are mainly two types of titanium screws on the market: pure titanium and titanium alloy. Pure titanium has good flexibility and antioxidant properties. Titanium alloy is a mixture of titanium and other metals to enhance its specific properties. When selecting and using screws, one should determine the appropriate material based on their actual needs.