Whether you are an engineer or just interested in the material you are using, you must know the differences between 1.4462 and other materials. These differences include price, performance, structure, and weldability.

Mechanical properties of 1.4462 Material Equivalent Grade

Compared with austenitic stainless steel, 1.4462 material equivalent has more excellent ductility, better corrosion resistance, and higher tensile strength. Moreover, this alloy has lower nickel content, making it more economical. This grade was developed for use in the oil and gas industry in the North Sea. Currently, it is used in shipbuilding and the construction industry. This material can be welded by most of the standard welding methods. However, there are some drawbacks:

  1. The heat treatment temperature must be at least 600 deg C to 900 deg C.
  2. The machining process must be performed with high-speed tools.
  3. The cutting surface must be coated with tungsten carbide plates.

Weldability Of Duplex Steel 1.4462 Material

Various tests were carried out on the weldability of the material equivalent of 1.4462 duplex steel. The mechanical properties were determined according to ISO 17639. The microstructure of the welded joints was studied under different linear energy levels. The resulting welds were tested for corrosion resistance.

1.4462 Material Is Corrosion Resistance

Stainless steel alloy grade 1.4462 material equivalent is a combination of austenitic and ferritic stainless steel, characterized by high corrosion resistance. This alloy is used in various applications such as water & oil & gas. It has better corrosion resistance than 316L and 304. It also has good mechanical properties. It is resistant to pitting, stress corrosion cracking, and intergranular corrosion. It is widely used in pressure vessels and the construction industry. It is suitable for applications in acidic, chloride, and sulfide environments. The duplex austenite and ferrite microstructure of the alloy offers superior corrosion resistance to austenitic steels.

However, its machinability is difficult due to its dual-phase structure. The material is also challenging to weld. It requires hot forming. The material has a good price/performance. It can be forged at a temperature of 1200 deg C. The material also exhibits excellent resistance to localized corrosion. Typical applications include hydropower equipment. It is also used in pulp and paper industries.

The mechanical properties of the material are good at room temperature. Its weldability is excellent. However, it is not easy to machine because of the duplex structure. Depending on the application, it can be subjected to hot forming or solution annealing.