Qhov sib txawv tseem ceeb yog lub zog: S690QL yog lub siab - lub zog steel nrog qhov tsawg kawg nkaus tawm lub zog ntawm 690 MPa, ua tiav los ntawm quenching thiab tempering (Q + L), thaum S355 yog cov qauv hlau (xws li S355J2+N) nrog qhov tsawg kawg nkaus yield zog ntawm 355 MPa, typically . Qhov no txhais tau tias S690QL muaj zog dua, tso cai rau cov qauv sib dua, tab sis S355 yog ntau dua thiab raug nqi- siv tau rau cov kev siv dav dav, nrog S690QL yuav tsum tau ua tib zoo tsim, tshwj xeeb tshaj yog rau kev qaug zog, vim nws cov khoom txhim kho thiab ua tiav.
S355 Steel (eg, S355J2+N)
Lub zog:Tsawg dua (min{0}} MPa tawm los).
Kev ua:Kub- dov thiab normalized.
Daim ntawv thov:Feem ntau, dav dav - cov phiaj xwm kev siv cov qauv, feem ntau siv rau qhov kev qaug zog loads yog ib qho kev txhawj xeeb vim nws tus cwj pwm thiab tus nqi kwv yees.
Cov tshuaj muaj pes tsawg leeg ntawm cov hlau S355JR (1.0045): EN 10025-2-2004
| Nominal thickness =< 30(mm) CEVmax=0.45 |
S690QL hlau
Lub zog:Siab (min{0}} MPa tawm los).
Kev ua:Quenched thiab Tempered (Q + L) rau kev txhim kho lub zog thiab toughness.
Kev sib xyaw:Muaj cov ntsiab lus alloying xws li Niobium (Nb), Titanium (Ti), Vanadium (V) rau kev ua kom zoo thiab lub zog.
Daim ntawv thov:Siv rau kev sib zog, siab - cov qauv kev ua tau zoo (piv txwv li, cranes, tshuab hnyav), tab sis yuav tsum tau ua tib zoo tsim qauv los tswj kev qaug zog tawg pib.
Tshuaj muaj pes tsawg leeg ntawm S690QL Steel (Hloov, Max %)
| Element | % | Element | % |
|---|---|---|---|
| C | 0.20 | Cu | 0.50 |
| Si | 0.80 | Mo | 0.70 |
| Mn | 1.70 | Nb* | 0.06 |
| P | 0.025 | Ni | 2.00 |
| S | 0.015 | Ti* | 0.05 |
| N | 0.015 | V* | 0.12 |
| B | 0.005 | Zr* | 0.15 |
| Cr | 1.50 |
* Tsawg kawg yog 0.015% ntawm cov nplej- cov khoom ua kom zoo yuav tsum muaj. Aluminium kuj tseem siv tau ua cov nplej - cov khoom ua kom zoo.
Key Takeaway
S690QL muaj lub zog ntau dua thiab kev ua tau zoo rau cov qauv tsim, tab sis S355 tseem yog tus neeg ua haujlwm rau kev tsim kho dav dav vim nws qhov sib npaug ntawm tus nqi thiab cov khoom tsim nyog, nrog S690QL xav tau kev tsim tshwj xeeb rau kev qaug zog.