Carbon and Low-Alloy Steel — S355, Q355B, A36 and Equivalents
The everyday grades. The only thing worth saying about them is which one you are actually getting.
Grades we work with
| GB | EN | ASTM | JIS | We process |
|---|---|---|---|---|
| Q235B | S235JR | A36 | SS400 | cut to 80 mm |
| Q355B | S355JR / J2 | A572 Gr.50 | SM490 | cut to 80 mm |
| Q420 | S420 | — | — | cut to 80 mm |
| Q460 | S460 | — | — | cut to 80 mm |
On "equivalent" grades
These grades are close, not identical. S355J2 and Q355B have different impact test temperatures, and if your application needs the J2 impact value, a Q355B certificate does not give it to you. We will tell you which one we are actually buying, and the mill certificate will say so.
Certificates and classification
EN 10204 2.2, 3.1 as standard, 3.2 on request. Parts in this family usually classify under CN 7308 / 7326 — see what we can document for CBAM.
Materials and fabrication are supplied according to your drawings and specified standards. Grade equivalency is subject to chemical composition, mechanical properties, impact requirements, heat-treatment condition, thickness range and project-specific approvals. We do not claim any grade to be fully identical to another on the basis of designation alone.
Send us the drawing
Acknowledgement within 4 working hours. Full quotation within 48 hours when the drawing package is complete.