Khoom Description
S355J2 yog European txheem kub-kuav los tiag steel khoom, teej tug mus rau cov European txheem low-alloy high-strength steel phaj. Nws cov qauv siv yog EN10025 tshwj xeeb kev ua haujlwm. Muaj ob txoj hauv kev los nthuav qhia S355J2 steel phaj, raws li: S355J2+N{10}} ib txwm dov -20 degree C cuam tshuam, S355J2=-20 degree C cuam tshuam.
Cov tshuaj muaj pes tsawg leeg ntawm S355J2 feem ntau suav nrog carbon (C), silicon (Si), manganese (Mn), phosphorus (P) thiab sulfur (S). Cov khoom xyaw tshwj xeeb yog raws li nram no:
- Cov ntsiab lus carbon (C): feem ntau qis dua 0.20%.
Silicon cov ntsiab lus (Si): feem ntau qis dua 0.55%.
- Manganese cov ntsiab lus (Mn): feem ntau qis dua 1.60%.
- Phosphorus cov ntsiab lus (P): feem ntau yog qis dua 0.025%.
- Cov ntsiab lus sulfur (S): feem ntau qis dua 0.025%.
Cov cuab yeej zoo heev ntawm S355J2 ua rau nws siv dav siv cov khoom siv hlau. Cov cuab yeej cuab tam tseem ceeb ntawm S355J2 yog raws li hauv qab no:
- Tensile Strength: mus txog 510-680 MPa.
- Tawm Zog: mus txog 355 MPa.
- Elongation (Elongation): ntawm 25 hli nplai, qhov tsawg kawg nkaus yog 20%.
Impact Toughness: Impact toughness yog 27 joules (J) ntawm qhov kub qis tshaj.
S355J2 yog cov khoom siv feem ntau siv cov khoom siv hlau nrog cov khoom siv zoo heev thiab kev sib txuas. Nws muaj pes tsawg leeg muaj cov ntsiab lus xws li carbon, silicon, manganese, phosphorus, thiab sulfur, thiab tej zaum yuav muaj me me ntawm lwm yam alloying ntsiab. S355J2 tau siv dav hauv kev tsim kho, txuas hniav, tshuab, nkoj thiab lwm yam kev lag luam, thiab tau txais txiaj ntsig rau nws lub zog siab thiab kav ntev. Thaum siv S355J2 rau vuam, koj yuav tsum xaiv txoj kev vuam kom zoo thiab tsis ua kom ntseeg tau qhov vuam zoo.
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