【GNEE Group chaw ua haujlwm ib puag ncig zaub】
1. Kev piav qhia ntxaws ntawm S235J2 steel phaj:
S235J2 steel phaj yog cov khoom lag luam nyob sab Europe ntawm qis-alloy high-strength steel phaj. Ntau tus neeg xav tias qhov no zoo ib yam li Q235 zoo tib yam phaj, tab sis nws tsis yog. Txawm hais tias S235J2 steel phaj zoo ib yam li Q235D tsim nyog thiab tuaj yeem siv tau, koj yuav tsum saib cov ntaub ntawv ntawm cov hlau phaj.
2. Tshuaj muaj pes tsawg leeg ntawm S235J2 steel phaj:
S235J2 steel phaj C (carbon) cov ntsiab lus → Tsawg dua los yog sib npaug rau 0.17;
S235J2 steel phaj Mn (manganese) cov ntsiab lus → Tsawg dua lossis sib npaug 1.40;
S235J2 steel phaj Cu (tooj liab) cov ntsiab lus → Tsawg dua los yog sib npaug rau 0.55;
P (phosphorus) cov ntsiab lus ntawm S235J2 steel phaj → Tsawg dua los yog sib npaug rau 0.025;
S (sulfur) cov ntsiab lus ntawm S235J2 steel phaj → Tsawg dua los yog sib npaug rau 0.025;
3. Mechanical zog ntawm S235J2 steel phaj:
S235J2 steel phaj → Yield zog → Ntau dua los yog sib npaug rau 225MPa;
S235J2 steel phaj → tensile zog → 360-510MPa
S235J2 steel phaj → elongation → Ntau dua lossis sib npaug li 18%;
4. S235J2 steel phaj siv cov qauv:
S235J2 steel phaj belongs rau European tus qauv low-alloy high-strength steel phaj. Tus lej qauv siv yog "EN10025". Cov txheej txheem no yuav tsum muaj cov xwm txheej ntawm kev xa khoom, kev ua haujlwm thiab lwm yam qauv ntawm steel phaj.
