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Detailed introduction to material selection for resistance to phosphoric acid corrosion

Phosphoric acid is a common acidic medium that is widely used in industry and laboratories. It is also a common corrosive medium. Materials resistant to phosphoric acid corrosion need to have the following characteristics: good corrosion resistance, high temperature strength, good processability and weldability, and oxidation resistance. Common corrosion-resistant materials include steel, stainless steel, nickel-based alloys, etc. Among them, nickel-based alloy is an excellent corrosion-resistant material and is widely used in chemical industry, petroleum, aerospace and other fields.

The nickel-based alloys, Hastelloy and high-temperature alloy materials produced by ANTON METAL Company have excellent performance in resistance to phosphoric acid corrosion and have wide application prospects. These alloy materials can meet the needs under different working conditions and provide reliable material choices for engineering design.

When selecting materials that are resistant to phosphoric acid corrosion, factors such as the concentration of phosphoric acid, temperature and working time need to be considered to determine the most suitable material. Some common materials resistant to phosphoric acid corrosion include:

1. Stainless steel: Stainless steel is a widely used corrosion-resistant material that can work stably in low-concentration and low-temperature phosphoric acid environments. However, when the phosphoric acid concentration or temperature increases, the corrosion resistance of stainless steel decreases.

2. Titanium alloy: Titanium alloy is a lightweight, high-strength material with good corrosion resistance. In a phosphoric acid environment with a concentration below 10% and a temperature below 50°C, titanium alloys can resist corrosion well, but in high concentration and high temperature environments, the corrosion performance of titanium alloys will decrease.

3. Austenitic stainless steel: Austenitic stainless steel has good corrosion resistance and high temperature strength, and can work stably in a phosphoric acid environment of a certain concentration and temperature.

4. Nickel-based alloy: Nickel-based alloy is an excellent corrosion-resistant material that can work stably in high-concentration and high-temperature phosphoric acid environments. Nickel-based alloys have good corrosion resistance, high temperature strength, oxidation resistance and fatigue life. In addition, nickel-based alloys also have good processability and weldability, which can meet the needs of different engineering designs. The nickel-based alloy materials produced by ANTON METAL mainly include Hastelloy, Inconel, Monel and other series. These alloy materials are widely used in chemical industry, petroleum, aerospace and other fields, and have good resistance to phosphoric acid corrosion.

Hastelloy alloy is a nickel-based alloy developed by Hexcel in the early 20th century and has good corrosion resistance and high-temperature strength. Hastelloy alloy is divided into multiple series, such as C series, B series, X series, etc. Each series has different performance and application range. Hastelloy C-276 alloy is a commonly used Hastelloy alloy with excellent corrosion resistance. It can still maintain good corrosion resistance in phosphoric acid environments with concentrations up to 40% and temperatures up to 200°C. Therefore, Hastelloy C-276 alloy is widely used in chemical, petroleum, pharmaceutical and other fields.

Inconel alloy is a nickel-based alloy with good heat resistance and corrosion resistance. Inconel alloys mainly include Inconel 600, Inconel 625 and other series, which can work stably in high temperature and high pressure phosphoric acid environments. Inconel 625 alloy has excellent corrosion resistance and can still maintain good corrosion resistance in high-concentration and high-temperature phosphoric acid environments. Therefore, Inconel 625 alloy is widely used in oil refining, chemical industry, marine engineering and other fields.

Monel alloy is a nickel-copper alloy with good corrosion resistance and high temperature strength. Monel alloys mainly include Monel 400, Monel K-500 and other series, which can work stably in low concentration and low temperature phosphoric acid environments. Monel 400 alloy has excellent corrosion resistance and can still maintain good corrosion resistance in a phosphoric acid environment with a concentration below 5% and a temperature below 100°C. Therefore, Monel 400 alloy is widely used in marine engineering, chemical industry, petroleum and other fields.

Tianjin Anton Metal Manufacture Co., Ltd. is a company specializing in the production of various nickel-based alloys, Hastelloy alloys and high-temperature alloy materials. The company was established in 2001 with a registered capital of 16.0 million, specializing in the production and sales of alloy materials. Anton Metal’s products are widely used in aerospace, chemical industry, electric power, automobile, nuclear energy and other fields, and can also provide customized alloy material solutions according to customer needs. If you need to know the price consultation of alloy materials or provide customized alloy material solutions, please feel free to contact the sales staff.

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ANTON METAL| Your specialty metals manufacturer
Email: dominic@antonmetal.com
Phone: +8613132148618(wechat/whatsapp)


Post time: Sep-09-2023