What materials are available for equipment made of metal materials that are resistant to high temperatures and strong acids? What are the specific grades of high silicon stainless steel?

Metal materials that are resistant to high temperatures and strong acids mainly include some high-alloy stainless steels, nickel-based alloys, and titanium alloys. These materials have excellent corrosion resistance and high temperature strength, and are more suitable for equipment in high temperature and corrosive environments. 1. High alloy stainless steel: Such as super austenitic stainless steel (such as 254SMO, AL-6XN), duplex stainless steel (such as 2205, 2507), etc., which have good acid resistance and heat resistance. 2. Nickel-based alloy: Hastelloy (such as C276, C22, B2, etc.), Inicol alloy (such as 600, 625, 825, etc.) and Monel alloy, etc. These alloys have excellent corrosion resistance and high temperature resistance and are used in many harsh chemical environments. 3. Titanium alloy: Titanium and titanium alloys also have good corrosion resistance and are suitable for use in certain strong acid environments, but their high temperature resistance is not as good as the above alloys. Regarding high-silicon stainless steel, this type of material contains a high silicon content (generally above 4%), which significantly improves the corrosion resistance of the material to strong oxidizing acids (such as nitric acid and sulfuric acid). However, high-silicon stainless steel is not a specific brand, but a general term referring to a type of material with a high silicon content in stainless steel. The specific brand may vary depending on the manufacturer and standards such as national standards and American standards. High silicon stainless steel materials similar to HR-160 (containing Ni, Co, Cr and high silicon) may be found on the market. When selecting materials, you also need to consider the actual working conditions, such as specific temperature, pressure, corrosiveness of the medium, etc., to select the most appropriate material. Whether these materials are available in the steel market needs to be judged based on local supply conditions. Some special alloys may need to be ordered from professional alloy material suppliers. If you need to share specific usage experience, you may need to contact professionals in related industries, or consult application cases and technical literature in related fields. Comprehensive material testing and evaluation prior to operation is also essential. .

The Chinese Stainless Steel Manual Gangyi Min has an introduction to relevant high-silicon stainless steel brands, and the China Metal Research Institute has research and production on the corrosion resistance of high-silicon stainless steel.

The temperature is about 120 degrees, and titanium and titanium alloys are used.

High silicon stainless steel is mainly used in the nitric acid and sulfuric acid industries.

It depends on specific indicators such as temperature, strong acid, acid concentration, etc. Without these specific indicators, all recommendations are meaningless. In recent years, major stainless steel mills have been promoting special steels for various industries. I also have information about Tsingshan Group’s new steel types. You can check specifically whether there are applicable steel types.

This is a professional and responsible reply. If the temperature range and the specific acid medium are not clear, it is equivalent to Chinese medicine prescribing medicine without even conducting the inspection, hearing, smelling, inquiring and cutting procedures. This is a typical quack practice. The problems in the chemical industry are basically specific. The poster didn't even mention specific data. He either has a high fever and is confused or is terminally ill.

98% concentrated sulfuric acid, distillation temperature 170~220 degrees

Are there any metal materials you can recommend?