What is the material of 16MnR+20?
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This post was last edited by wang*neng on 2010-8-15 at 16:30. What does 16MnR+20 mean?
16MnR and steel grade 20 are not the same type of steel. 16MnR is a common low-alloy steel, while 20 steel is a common low-carbon steel; the main difference between the two lies in their manganese content. The welding rod suitable for 16MnR is J507, while the welding rod suitable for Q235 is J422. If it is a butt weld between the two, either type of welding rod can be used; however, J507 is the preferred choice
16MnR is a steel used for pressure vessels, while steel grade 20 is a regular low-carbon steel. Generally, 16MnR+20 refers to a composite steel plate, meaning that the equipment is made from both 16MnR material and steel grade 20 material.
16MnR is a common low-alloy steel, while 20# steel is a common low-carbon steel
Composite steel plate: Two materials used in different parts of one device
Search for 16MnR on Baidu: 16MnR is a common low-alloy steel, designed specifically for use in boilers and pressure vessels; it is a frequently used material in such applications. It has high strength and zero plasticity and toughness. The common delivery conditions are hot-rolled or normalized. It belongs to low-alloy high-strength steel with a low manganese content. Its performance is similar to that of 20G (412–540); its tensile strength is slightly higher, at (450–655), and its elongation rate is 19–21%, which is lower than the 24% value for 20G. The standard source is GB6654; in 2010, this steel grade was gradually replaced by Q345R. 16MnR steel is a special plate for pressure vessels with a yield strength of 340 MPa; it possesses excellent comprehensive mechanical properties and processability. The phosphorus and sulfur contents are slightly lower than those of ordinary 16Mn steel. In addition to higher requirements for tensile strength and elongation compared to ordinary 16Mn steel, impact toughness must also be ensured. It is the steel plate specifically designed for pressure vessels that is most widely used and in the largest quantities in our country at present.