Question 1: What type of material is S235J2 steel pipe?
S235J2 is a non-alloy structural steel of European standard, which is a kind of carbon steel, equivalent to the national standard Q235C carbon structural steel. The carbon content is about 0.05% - 0.70%, and some can be as high as 0.90%. It can be divided into two categories: ordinary carbon structural steel and high-quality carbon structural steel.
Question 2: What standard does S235J2 steel pipe implement?
The standard implemented by S235J2 is EN10027 - 2. In addition, in some production scenarios, relevant standards such as European standards EN10025/2 - 2004, EN10210/1 - 2006 will also be involved. Some companies can provide EU CE certification, GL certification, LS certification, etc.
Question 3: What is the chemical composition of S235J2 steel pipe?
For the nominal thickness of 6-40mm, the C content is 0.19-0.23%, the phosphorus content is 0.045%, the sulfur content is 0.014%, and the manganese content is 0.60%. In the deoxidation method, FN means boiling steel is not allowed, and FF means killed steel; for the nominal thickness of 150mm, the C content is 0.22%.
Question 4: What are the mechanical properties of S235J2 steel pipe?
This steel has good mechanical properties, its tensile strength can reach 450-680MPa, the yield strength range is 235-355MPa, and the elongation is above 26%, which means it can withstand large loads and has good compressive resistance.
Question 5: In what fields is S235J2 steel pipe mainly used?
S235J2 is mainly used for bridges, various types of construction projects, and the manufacture of various metal components that bear static loads and unimportant mechanical parts and general welded parts that do not require heat treatment. In the construction field, it can be used to build building frames; in the mechanical field, it can be used to manufacture some common mechanical structural parts
Question 6: What are the advantages and characteristics of S235J2 steel pipe?
S235J2 has good plasticity, weldability and machinability, and can meet the requirements of various complex projects. Its carbon content is low, and the reduction of carbon content can improve the plasticity and weldability of steel and reduce its brittleness.
