1. The heat-resistance function is better than that of dry burning, the skill is more sophisticated, and the cost is lower. At present, the varieties of stainless steel heating tubes selected by the manufacturers of instant electric water heaters are more numerous, and the price of various tubes is large. The same is the stainless steel electric heating tube, the quality and function of the difference is also right and wrong.
2. The difference between the raw materials of stainless steel electric heating tubes is mainly due to the different nickel content. Nickel is an excellent corrosion resistance material. In cooperation with chromium in stainless steel, the corrosion resistance and process functions of stainless steel have been improved.
3. However, for low-carbon nickel steel to achieve a pure austenite arrangement, the nickel content should reach 24%, and the corrosion resistance of the steel in some media is obviously changed as long as it contains 27% nickel.
Therefore, from the raw materials, 800, 840, 316L is relatively good corrosion-resistant and high-temperature resistant stainless steel electric heating tube, 800 stainless steel tube containing nickel reaches 30, 840 tube nickel content reaches 20, but if it is poorly selected 304 tube stainless steel contains nickel as long as 8. Therefore, it is often advantageous to use the same high-temperature and corrosion-resistant stainless steel heating tube with high nickel content.