What is the grade of SM400?
A B and C are the three quality grades of the SM400 grade. The quality level A represents no impact, B represents 20℃ impact at room temperature, and C represents 0℃ impact. Thickness > 50 ≤ 100mm, carbon equivalent,%: ≤0.47.
Analysis of mechanical properties
| Grade | Yield point or yield strength, N/mm2 | Tensile strength, N/mm2 | ||||||
| Steel plate thickness, mm | Thickness, mm' | |||||||
| ≤16 | >16≤40 | >40≤75 | >75≤100 | >100≤160 | >160≤200 | ≤100 | >100≤200 | |
| SM400 | >=245 | >=235 | >=215 | >=215 | >=205 | >=195 | 400-510 | 400-510 |