"S" is short for structural steel;
"275" refers to the minimum yield strength (MPa) for the steel thickness ≤ 16mm;
"JR" indicates the quality grade related to charpy impact test energy values (27J, tested at room temperature 20℃);
1.0044 is the steel number of S275JR.
S275JR carbon steel plate chemical composition (Ladle Analysis Max%):
| Thickness(mm) | C | Mn | P | S | N | Cu |
| T≤16 | 0.21 | 1.5 | 0.035 | 0.035 | 0.012 | 0.55 |
| 16 | 0.21 | |||||
| 40 | 0.22 |
S275JR carbon steel plate mechanical properties:
| Grade | Minimum yield strength Reh | Tensile strength Rm | ||||||||||||
| MPa | MPa | |||||||||||||
| Nominal thickness | Nominal thickness | |||||||||||||
| mm | mm | |||||||||||||
| ≤16 | >16 | >40 | >63 | >80 | >100 | >150 | >200 | >250 | <3 | >3 | >100 | >150 | >250 | |
| ≤40 | ≤63 | ≤80 | ≤100 | ≤150 | ≤200 | ≤250 | ≤400 | ≤100 | ≤150 | ≤250 | ≤400 | |||
| S275JR | 275 | 265 | 255 | 245 | 235 | 225 | 215 | 205 | - | 430-580 | 410-560 | 400-540 | 380-540 | - |
| Minimum elongation - A | Notch impact test | ||||||
| Lo = 5,65 * √So (%) | |||||||
| Nominal thickness | Temperature | Min. absorbed energy |
|||||
| mm | |||||||
| >3 | >40 | >63 | >100 | >150 | >250 | °C | J |
| ≤40 | ≤63 | ≤100 | ≤150 | ≤250 | ≤400 | ||
| 23 | 22 | 21 | 19 | 18 | - | 20 | 27 |
