s355j 2
Tshuaj muaj pes tsawg leeg
| Lub ntsiab | P355GH(Pressure Vessel Steel) | S355J2(Structural Steel) | Qhov txawv tseem ceeb |
|---|---|---|---|
| Cov pa roj carbon (C) | Tsawg dua lossis sib npaug li 0.18% | Tsawg dua lossis sib npaug li 0.22% | P355GH muaj ib tugqis max carbon cov ntsiab lusrau kev txhim kho weldability thiab toughness nyob rau hauv lub tshuab siab; S355J2 tso cai rau cov pa roj carbon ntau dua rau cov qauv siv dav dav. |
| Silicon (Si) | Tsawg dua lossis sib npaug li 0.60% | Feem ntau Tsawg dua los yog sib npaug rau 0.50% (tsis yog ib txwm teev) | P355GH tso cai rau silicon ntau dua rautxhim kho deoxidation thiab siab -kub scaling kuj; S355J2 tsom rau cov qauv ductility. |
| Manganese (Mn) | 1.10–1.70% | 1.00–1.65% | Zoo sib xws, tab sis P355GH nyiam mus rausiab kawg rau siab ncaj ncees; S355J2 yog qhov zoo rau kev tsim khoom. |
| Phosphorus (P) | Tsawg dua lossis sib npaug li 0.025% | Tsawg dua lossis sib npaug li 0.025% (rau qib S355J2) | Ob leeg muajnruj phosphorus txwvrau qhov nyuaj, tab sis P355GH yuav tswj qhov no nruj dua rau kev nyab xeeb siab. |
| Sulfur (S) | Tsawg dua lossis sib npaug li 0.010% | Tsawg dua los yog sib npaug rau 0.035% (nrog rau S355J2) | P355GH muaj kev tswj hwm nruj duativ thaiv kub tawg nyob rau hauv siab; S355J2 tso cai rau cov sulfur ntau dua rau kev ua kom yooj yim dua hauv cov qauv uas tsis yog - tseem ceeb. |
| Alloying Elements | Tej zaum yuav muaj kab mob Mo, Nb, V rau siab -temp lub zog | Feem ntau cov pa roj carbon -manganese; tej zaum yuav muaj microalloying (Nb, V, Ti) rau lub zog | P355GH siv alloying rausiab thiab siab -kev ua haujlwm kub; S355J2 siv microalloying raustructural zog thiab weldability. |
Mechanical Properties
| Khoom | P355GH(EN 10028-2) | S355J2(EN 10025-2) | Qhov txawv tseem ceeb |
|---|---|---|---|
| Yield zog (ReH) | Ntau dua lossis sib npaug li 355 MPa (thickness Tsawg dua lossis sib npaug li 16 hli) | Ntau dua lossis sib npaug li 355 MPa (thickness Tsawg dua lossis sib npaug li 16 hli) | Zoo sib xws yield zog, tab sis P355GH raug kuaj hauv qabsiab- tej yam kev mob tshwj xeeb; S355J2 yog rau kev thauj khoom dav dav. |
| Tensile zog (Rm) | 490-630 MPa | 470-630 MPa | Overlapping ntau yam, tab sis P355GH nyiam muajsiab dua yam tsawg kawg nkaus tensile zograu kev ruaj ntseg. |
| Elongation (A5) | Ntau dua lossis sib npaug li 20% (thickness Tsawg dua lossis sib npaug li 16mm) | Ntau dua lossis sib npaug li 22% (ntev, thickness Tsawg dua lossis sib npaug li 16 hli) | S355J2 xav taume ntsis zoo elongationrau structural ductility; P355GH tseem ceeb rau lub zog rau cov hlab ntsha siab. |
| Impact Toughness | Ntau dua lossis sib npaug ntawm 27 J ntawm 0℃(yuav tsum tau ua kom muaj kev nyab xeeb siab) | Ntau dua lossis sib npaug li 27 J ntawm -20℃(J2 qib yuav tsum tau) | S355J2 muaj qhov ntsuas kub qis dua(-20℃vs . 0℃rau P355GH), ua rau nws haum rautxias dua cov txheej txheem ib puag ncig; P355GH tsom rauchav-kub toughness rau lub tshuab siab. |
Daim ntawv thov tseem ceeb -Cov khoom muaj feem xyuam
| Khoom / Daim Ntawv Thov | P355GH | S355J2 | Qhov txawv tseem ceeb |
|---|---|---|---|
| Kev kho cua sov | Feem ntau normalized (N) los yog quenched & tempered | Feem ntau muab nyob rau hauv kub - dov los yog normalized mob | P355GH feem ntau xav taunormalization rau siab ncaj ncees; S355J2 feem ntau yog kub- dov rau tus nqi- ua tau zoo. |
| Npaj siv | High -cov hlab ntsha siab, boilers, thiab siab -temp piping systems | General structural applications (tsev, txuas hniav, machinery thav duab) | P355GH yog rau siab- cov khoom siv; S355J2 yog rauload-cov kabmobnyob rau hauv ntau qhov chaw. |
| Weldability | Zoo, tab sis yuav tsum tau ceev faj cov txheej txheem rau lub tshuab siab | Zoo heev, nrog cov txheej txheem vuam yooj yim | S355J2 yooj yim dua thiab pheej yig dua rau vuam; P355GH xav tau kev tswj vuam kom muaj kev ruaj siab siab. |
| High -Tsub Ua Haujlwm | Haum rau qhov kub txog li ~ 400℃( khaws lub zog zoo) | Tsis yog tsim los rau siab -kev pabcuam kub; tuaj yeem degrade tshaj 300 degree | P355GH yogoptimized rau nruab nrab siab kub; S355J2 yog rau ambient lossis qis -kub siv cov qauv siv. |
| Txias -Tsuas Ua Haujlwm | Txwv (kev cuam tshuam kuaj ntawm 0 degree) | Zoo heev (kuaj kuaj ntawm -20 degree) | S355J2 zoo dua rau cov huab cua txias; P355GH tsis yog tsim rau qis - qhov kev pabcuam kub siab. |
| Standard Reference | TS EN 10028-2 Cov hlab ntsha siab siab | TS EN 10025-2 Cov qauv hlau | Cov qauv sib txawv nrogcov kev cai sib txawvraws li daim ntawv thov. |
P355GH boiler raj Hoobkas
