Steels | Plate Thickness mm | Chemical Composition mass % | Ceq1) % |
Pcm2) % |
Mechanical Properties | Weldability3) | ||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
C | Mn | Ti | YP N/mm2 |
TS N/mm2 |
vE-20 J |
vE-50 J |
Preheating Temp ℃ |
|||||
SM490YB | Developed Steel | 30 | 0.08 | 1.55 | 0.012 | 0.34 | 0.16 | 485 | 526 | 339 | 331 | 25 |
Conventional Steel | 0.16 | 1.35 | − | 0.40 | 0.24 | 408 | 542 | 154 | 68 | 25 | ||
SM520C | Developed Steel | 50 | 0.08 | 1.54 | 0.013 | 0.34 | 0.16 | 455 | 548 | 342 | 328 | 25 |
Conventional Steel | 0.17 | 1.34 | − | 0.42 | 0.26 | 461 | 562 | 162 | 59 | 50 |
1) Ceq(%)=C+Mn/6+Si/24+Ni/40+Cr/5+Mo/4+V/14
2) Pcm (%)=C+Si/30+Mn/20+Cu/20+Ni/60+Cr/20+Mo/15+V/10+5B
3) y-groove weld cracking test