Q390B yog ib hom qis alloy high-strength structural steel phaj.
Q390B siab zog qis alloy hsla steel feem ntau yog siv dav hauv kev lag luam kev lag luam, xws li: hnyav kev lag luam machinery, engineering machinery, chemical khoom, thee mining machinery, cranes, choj lug, turbine baffles, racks, hydraulic brackets, pre-built parts , nkoj khoom, chaw nres nkoj machinery, tsheb thiab lwm yam khoom siv.
Q390B Tsawg Alloy Steel Chemical Composition:
| C | Si | Mn | P | S | V | Nb | Ti | Cr | Ni |
| 0.20 | 0.55 | 1.00-1.60 | 0.040 | 0.040 | 0.02-0.20 | 0.015-0.060 | 0.02-0.20 | 0.30 | 0.70 |
Q390B Hsla Steel Mechanical zog:
| Thickness (hli) | Tsawg dua los yog sib npaug li 16 | >16 Tsawg dua lossis sib npaug li 35 | >35 Tsawg dua los yog sib npaug li 50 | >50 |
| Yield zog (Ntau dua lossis sib npaug rau Mpa) | 390 | 370 | 350 | 330 |
| Tensile zog (Mpa) | 490-650 | |||
