HastelloyB2 alloy

HastelloyB-2 is a kind of metal material with special properties, its main components are iron and chromium. The unique feature of this alloy is that it is able to avoid damage to the natural environment by β-phase Ni4Mo, thus demonstrating excellent corrosion resistance. In addition, HastelloyB-2 also has good resistance to chloride ion content recovery intergranular corrosion cracking (SCC), and resistance to various organic corrosion ability.

HastelloyB-2 is widely used in organic chemistry, petrochemical industry, power energy production and environmental pollution control. In these fields, HastelloyB-2 is especially suitable for hydrochloric acid, sulfuric acid, calcium phosphate, glacial acetic acid and other strong acid environment. If you need to apply it to a particular industry, be sure to consult the relevant material supplier for more detailed information.

Worldwide, HastelloyB-2 has a variety of similar models, such as NS322 in China, Nimo28 in France, and UNSN10665 in the United States. These models are similar in chemical composition and performance to HastelloyB-2, but differ in nomenclature and standard.

In terms of mechanical properties, the relative density of HastelloyB-2 is 9.2g/cm3, and the melting temperature range is 1330~1380℃. During the welding process, you can choose to use tungsten electrode maintenance gas welding or gas shielded arc welding in specific environments. In order to ensure the quality of welding, the material to be welded should be kept in a quenched state to remove the oxide, oil and various marks. At the same time, the area of the original material width of about 25mm of the welding part needs to be polished to a bright metallic luster.

It is noteworthy that the heat transfer coefficient of HastelloyB-2 is lower than that of steel. When performing a single V welded interface, the Angle should be maintained at 70° and a low fat input should be used to ensure that the solid layer temperature does not exceed 120 ° C. During the welding process, the oxidation color can be removed to improve the quality of the weld. In some applications, post-weld heat treatment is also required to eliminate residual stress, thereby improving the resistance of the material to intergranular corrosion and cracking.