SS400
Low Carbon Steel
SS400 according to material grade and name defined in the JIS G 3101 standard, The first S stands for "Steel", the second S stands for "Structure", and 400 for the lower limit tensile strength of 400 MPa. Ordinary structural steel with a tensile strength of 400 Mpa.This steel is the most widely used in JIS standard. Its use covers structures such as bridges, ships, vehicles, etc., in the shape of steel plates, steel bars and sections, almost all auxiliary materials for machinery and structures are used.
SS400 is also soft in hardness due to its low carbon content. It is not recommended for use on main components with high strength, wear resistance or hardness. However, it has excellent weldability and machinability. It is often used for welding structural parts, nuts, small parts, parts for auto & motor industry, etc.
A general structure hot rolled steel
Purpose
SS400 is widely used in general structural steel.
International Comparison of Materials
| EU EN | Inter ISO | USA AISI | Japan JIS | Germany DIN | China GB | France AFNOR | England BS | Canada HG | European EN |
|---|---|---|---|---|---|---|---|---|---|
| S275JR | E275B | A283D A529 Gr.D |
SS400 | RSt42-2 St44-2 |
Q235 | E28-2 | 161-430 161-43A 161-43B |
260W 260WT |
Fe430B |
| Italy UNI | Spain UNE | Sweden SS | Poland PN | Finland SFS | Austria ONORM | Russia GOST | Norway NS | Portugal NP | India IS |
|---|---|---|---|---|---|---|---|---|---|
| Fe430B | AE255B | 1411 1412 |
St4V | Fe44B | St42F St430B | St4ps St4sp |
NS12142 | FE430-B | IS2062 |
**This comparison table is for reference only. The standards and grades of various countries have slightly different chemical compositions. Please refer to the database for details.**
Chemical Composition(JIS G4051)
| P(%) | S(%) | Thick (mm) | Yield stress (Mpa) | Tensile stress (Mpa)% | Elongation (%) |
|---|---|---|---|---|---|
| 0≦0.05 | 0≦0.05 | ≦16 | ≧245 | 400-510 | ≧21 |
Mechanical properties
Tensile strength (kgf/mm²): 41~52
Yield strength (kgf/mm²): ≧24
Size Range
| Shape | Size(mm) | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Round Bar | 13 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 25 |
| 26 | 27 | 28 | 30 | 32 | 34 | 36 | 38 | 40 | 42 | 44 | |
| 46 | 48 | 50 | 55 | 60 | 65 | 70 | |||||
- Steel Application
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Bearing Shaft
There must be a shaft in the motor, which is mainly used to drive the motor and generate kinetic energy for other devices. The materials for bearing shaft application that we recommend are as below.
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