EN 1.8881 steel yog cov hlau alloy uas tsim los rau hauv cov khoom siv wrought. 1.8881 yog tus lej EN rau cov khoom siv no. P690QL1 yog EN chemical designation.
Feature ntawm P690QL1:
Siab zog:
P690QL1 muaj qhov tsawg kawg nkaus tawm lub zog ntawm 690 MPa, ua rau nws zoo tagnrho rau cov ntawv thov uas xav tau siab load-cov kabmob muaj peev xwm thiab ua haujlwm rau deformation.
Toughness:
Cov khoom yog quenched thiab tempered kom ntseeg tau zoo heev toughness, txawm nyob rau hauv qis kub. Qhov no ua rau nws haum rau siv nyob rau hauv hnyav ib puag ncig, xws li offshore los yog Arctic tej yam kev mob.
Weldability:
P690QL1 yog tsim los rau weldable, tab sis nws yuav tsum tau preheating thiab post-weld heat treatment (PWHT) kom tsis txhob muaj teeb meem xws li hydrogen-induced cracking (HIC) los yog txo toughness nyob rau hauv lub tshav kub- cuam tshuam cheeb tsam (HAZ).
Zoo-Grained Structure:
Qhov zoo -grained microstructure ntawm P690QL1 pab txhawb rau nws lub zog siab thiab toughness, nrog rau nws muaj peev xwm tiv taus dynamic thiab cuam tshuam loads.
Corrosion Resistance:
Thaum P690QL1 tsis yog qhov muaj zog corrosion-tiv taus zoo li cov hlau tsis muaj steel, nws tuaj yeem coated lossis kho los txhim kho nws cov kev tiv thaiv ib puag ncig.
Cov cuab yeej cuab tam rau P690QL1 steel phaj:
| Thickness (hli) | |||
| P690QL 1 | Tsawg dua los yog sib npaug li 50 | >50 Tsawg dua los yog sib npaug rau 100 | > 100 |
| Yield zog (Ntau dua lossis sib npaug rau Mpa) | 690 | 670 | 630 |
| Tsawg dua los yog sib npaug li 100 | > 100 | ||
| Tensile zog (Mpa) | 770-940 | 720-900 | |
Tshuaj muaj pes tsawg leeg rau P690QL1 steel phaj (Kub ntsuas Max%)
| Cov ntsiab lus tseem ceeb ntawm P690QL1 steel phaj | |||||||
| C | Si | Mn | P | S | B | N | Cr |
| 0.20 | 0.80 | 1.70 | 0.020 | 0.010 | 0.005 | 0.015 | 1.50 |
| Cu | Mo | Nb | Ni | Ti | V | Zr | |
| 0.30 | 0.70 | 0.06 | 2.50 | 0.05 | 0.12 | 0.15 | |
