SS400 is a marking method for Japanese steel materials and a judgment standard, which is equivalent to Q235 steel. Ordinary structural steel in Japanese steel (JIS series) grades mainly consists of three parts: SS400-S means steel, the second S means "structure", 400 is the lower limit tensile strength of 400MPa. SS400 steel plate itself not only has high strength, but also has certain comprehensive high-quality properties such as toughness, fatigue resistance, impact resistance, corrosion resistance, low temperature impact resistance, welding and easy processing. SS400 steel plates are widely used in construction and engineering structures.
| Steel Plate |
| Steel type | Carried standard | Steel grade | Level | Thickness scope |
| Carbon Structural steel | GB/T 700-2006 | Q195 | - | 1.5~20 |
| Q215 | A,B | 1.5~20 |
| Q235 | A,B,C,D | 1.5~300 |
| Q275 |
|
| EN 100025-2:2004 | S235 | JR,J0,J2,K2 | 1.5~300 |
| S275 |
| 1.5~300 |
| S355 |
| 3.0~300 |
| ASTM A36/A36M-13 | A36 | - | 1.5~300 |
| JIS 3101-2010 | SS330 | - | 1.5~300 |
| SS400 | - | 1.5~300 |
| SS490 | - | 3.0~300 |
| SS540 | - | 3.0~300 |
| GB/T 710-2008 | 08,08Al,10,15, | - | 1.5~200 |
| 20,30,35 |
| GB/T 711-2008 | 08F,08,10F,20, | - | 1.5~120 |
| 20Mn,60Mn |
| ASTM A568/A568M-13 | SAE1006,SAE1008 | - | 1.5~300 |
| Low alloy structural steel | ASTM A568/A568M-13 | Q345 | A,B,C,D,E | 3.0~300 |
| Q390 | A,B,C,D,E | 4.0~300 |
| Q420 |
|
| Q460 | C,D,E | 6.0~300 |
| Q500 |
|
| Q550 |
|
| JIS G3106-2008 | SM400 | A,B,C | 1.5~300 |
| SM490 | A,B,C | 3.0~300 |
| SM520 | B,C | 6~300 |
| SM570 | - |
| ASTM A572/A572M-13 | Gr42 | - | 1.5~300 |
| Gr50 | - | 3.0~300 |
| Gr55 | - | 4.0~300 |
| Gr60 | - | 4.0~300 |
| Gr65 | - | 6.0~300 |
| Steel type | Carried standard | Steel grade | Delivery Status | Thickness scope |
Ship building structural
steel plate | ABS,BV,CCS, | A,B | AR | 6~40 |
| DNV, |
| GL, KR,LR, | NR | 40~60 |
| NK RINA, | D | TMCP | 6~60 |
| RS Specifications of ten | E | TMCP | 6~60 |
| classification society | AH32 AH36 AH40 | TMCP | 6~60 |
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