Carbon low alloy Steel Plate SS400 Cutting

Ss400 is a marking method for Japanese steel materials and it is equivalent to domestic Q235 steel. Foreign standard structural steels are often classified according to tensile strength, such as SS400 (as indicated by Japan), where 400 means that the minimum value of σb is 400 MPa, and the Ultra high strength steel refers to steel with σb ≥ 1373 Mpa.

Alloy Steel Plate SS400 information

P: 0.050 or less
S: below 0.050
[Mechanical properties]
Yield strength N/mm²
245 or more (a<16mm) 235 or more (16mm<a<40mm)
215 or more (a>40mm)
a: steel thickness
Tensile strength N/mm&sup2;
400~510

Carbon low alloy SS400 Equivalent Material

SS400 is basically equivalent to China's Q235 (equivalent to Q235A). However, there are differences in specific indicators. Q235 has requirements for C, Si, Mn, S, P and other elements, but SS400 only requires S and P less than 0.050. The yield point of Q235 is greater than 235 MPa, while the yield point of SS400 is 245 MPa. SS400 (steel for general structure) means a general structural steel having a tensile strength of more than 400 MPa. Q235 means ordinary carbon structural steel with a yield point greater than 235 MPa. The standard number of the SS400 is JIS G3101. The standard number of the Q235 is GB/T700.

SS400 is often rolled into wire rods, round steel, square steel, flat steel, angle steel, I-beam, channel steel, window frame steel and other steel sections, medium-thick steel plates. SS400 low alloy Steel Plate SS400 is used in a large number of architectural and engineering structures and it is also used to make steel bars or build factory buildings, high-voltage transmission towers, bridges, vehicles, boilers, containers, ships, etc. Carbon steel SS400 is also used as mechanical parts that do not require high performance. C and D grade steels can also be used as some special steel.