S235J2W Steel: Kev Kub-Cawv Ua Kom Zoo & Kub Khoom
1. OvertView ntawm S235J2W
Lub hom phiaj: EN 10025-5 (European Weathering Hlau)
Ntaus: Atmospheric corrosion-resistant steel (zoo ib yam liCorten steel)
Tus yuam sij: Ua ib txheej xeb ("patina") rauNtev mus sab nraum zoov durability.
2. Kev kub-mob corrosion tsis kam
S235j2w yogtsis tsim rau kev pab kub siab(xws li, boilers, tso lub tshuab). Nws corrosion tsis kam yog optimized rauambient atnospheric, tsis yog huab cua sov heev.
Qhov Kub Lim & Cwj Pwm
| Yam tseem ceeb | Ua yeeb yam |
|---|---|
| Chav temp - 300 degree | Khaws cov huab cua tsis kam; Patina tseem nyob ruaj khov. |
| 300℃- 600 degree | Xeb txheej yuav txwv; oxidation accelerates. |
| >600 degree | Qhov ntsuas qhov ntsuas tseem ceeb thiab lub zog ploj (tsis pom zoo). |
Kev sib piv rau cov hlau kub-resistant:
Rau cov ntawv thov siab (piv txwv li, Furnaces), sivAustenitic Stainless (304H, 310s)lossisAlloy Hlau (T11, T22).
3. Cov Khoom Siv Cov Khoom Siv Hluav Taws Xob thiab Kub
| Qho so | Yield zog (mpa) | Tensile lub zog (mpa) | Kev Cuam Tshuam |
|---|---|---|---|
| 20 degree | 235 (min) | 360-510 | 27T -20 degree |
| 200 degree | ~200 | ~340 | Txo me ntsis |
| 400 degree | ~150 | ~300 | Nyiag Loj ↑ |
Cov ntawv tseem ceeb:
Lub zog poobtseem ceeb tshaj 300 degree.
Avoid prolonged use >400 degree(kev pheej hmoo ntawm kev deformation).
