| Carbon Structural Steel Grade | |||||||||
 China |  Germany |  France |  ISO |  Japan |  Sweden |  Britain |  America | ||
| GB | DIN | W-Nr. | NF | ISO | JIS | SS | BS | ASTM | UNS |
| Q195 (A1,B1) | S185 (st33) | 1.0035 | S185 (A33) | HR2 | – | – | S185 (140A10) | A285M Gr.B | – |
| Q215A | USt34-2 | 1.0028 | A34 | HR1 | SS330 (SS34) | 1370 | 040A12 | A283M Gr.C | – |
| A215B (A2,C2) | RSt34-2 | 1.0034 | A34-2NE | – | – | – | – | A573M Gr.58 | – |
| Q235A | S235JR | 1.0037 | S235JR | Fe 360A | SS400 (SS41) | 1311 | S235JR | A570 Gr.A | K02501 |
| Q235B | S235JRG1 | 1.0036 | S235JRG1 | Fe 360D | – | 1312 | S235JRG1 | A570 Gr.D | K02502 |
| Q235C | S235JRG2 (St 37-2) (USt 37-2) (RSt 37-2) | 1.0038 | S235JRG2 (E24-2) (E24-2NE) | – | – | – | S235JRG2 (40B,C) | A283M Gr.D | – |
| Q235D (A3,C3) | – | – | – | – | – | – | – | – | – |
| Q255A | St44-2 | 1.0044 | E28-2 | – | SM400A | 1412 | 43B | A709M Gr.36 | – |
| Q255D (A4,C4) | – | – | – | – | SM400B (SM 41A) (SM 41B) | – | – | – | – |
| Q275 (C5) | S275J2G3 S275J2G4 (St44-3N) | 1.0144 1.0145 1.0055 | S275J2G3 S275J2G4 | Fe430A | SS490 (SS50) | 1430 | S275J2G3 S275J2G4 (43D) | – | K02901 |
Steel Products
Approximate Comparison of Carbon Structural Steel Grade in Different Countries
