904L stainless steel contains nickel, chromium, and copper, which is more corrosion-resistant and wear-resistant than 316L steel, which can help form an anti-corrosion protective film on the surface of metal materials, and has better corrosion resistance and wear resistance than 316L. Strong, but there is not much difference in strength and hardness between the two. 904L is difficult to forge, so the cost is also greatly increased. The price is 3 times that of 316L stainless steel. Therefore, it has become exclusive to Rolex, and other brands are basically not used.

2.Tungsten steel case
This material is different from the materials used in ordinary watches. Its hardness is close to that of natural diamonds, it is not easy to wear, its brightness is like a mirror surface, it will never fade, and it can withstand mechanical shocks. Tungsten steel was originally a color - silver, but now it can be electroplated into gold and black, adding beauty to noble watches. The disadvantage is that it is easy to break without falling, so be careful when using it.


 3. Ceramic watch case
The first to use ceramic materials in the case and strap is Rado RADO. Moreover, it is also said to be "HIGH-TECH CERAMICS" and "space materials" by radar watches. Compared with stainless steel watches, ceramic watches are about 60% lighter and about 10 times harder than stainless steel. The most important feature of high-tech ceramics is wear resistance and corrosion resistance. No matter how long you wear it, ceramics can make this watch look as good as new. Adapt to body temperature, not prone to allergic reactions, the disadvantage is that it is fragile. In addition to radar, CHANEL Chanel is also a high-frequency user of high-tech ceramics.


 4. Titanium watch case
Titanium has very good advantages as a watch material, such as:
1. Titanium watches are quite comfortable to wear because they are surprisingly light;
2. Titanium is hypoallergenic, it does not contain nickel, and it is comfortable to wear even when the skin is sweating;
3. Because titanium is harder than steel, titanium watches are more durable;
4. The characteristics of corrosion resistance make titanium metal especially suitable for diving watches;
5. Titanium is environmentally friendly, it comes from the earth and is recyclable.
Commonly used titanium watches: IWC Pilot Series IW327006, Breitling Mechanical Chronograph V1731110/BD74/109W/M20BASA.1, Richard Mille Men’s Series RM 010, Hublot BIG BANG Series 411.NM.1170.RX , Panerai LUMINOR 1950 series PAM00389.


5. Plastic watch case
Watch brands with plastic cases are not very high-end, but they are stylish and practical. Take Casio as an example, most of which are plastic cases, which are deeply loved by young watch lovers.