Q235 steel yog siv dav siv tsawg - carbon structural steel nrog zoo sib npaug ntawm lub zog, ductility, thiab weldability. Nws versatility thiab nqi -effectiveness ua rau nws ib tug nyiam xaiv nyob rau hauv kev tsim kho, tsim, thiab cov khoom fabrication.
Tshuaj muaj pes tsawg leeg
Cov pa roj carbon (C):0.12-0.20% - muab lub zog thiab ductility
Manganese (Mn):0.30-0.70% - txhim khu hardness thiab toughness
Silicon (Si):Tsawg dua lossis sib npaug li 0.30% - ntxiv dag zog rau cov hlau
Sulfur (S) thiab Phosphorus (P):cov ntsiab lus tsawg heev kom tsis txhob brittleness
Qhov no ua tib zoo tswj muaj pes tsawg leeg ua kom Q235 steel ua tau zoo nyob rau hauv cov qauv thiab kev siv.
Qib Q235 Steel
Q235A:General -lub hom phiaj steel
Q235B:Zoo dua nrog stricter muaj pes tsawg leeg tswj
Q235C & Q235D:Txhim kho toughness, nrog Q235D haum rau qis- daim ntawv thov kub
Mechanical Properties
| Khoom | Q235 Hlau |
|---|---|
| Yield zog | 235-275 MPa |
| Tensile zog | 370-500 MPa |
| Elongation | 20–26% |
| Brinell Hardness (HB) | 100–170 |
Yield zog:Qhov siab tshaj plaws ua ntej deformation mus tas li
Tensile zog:Qhov siab tshaj plaws ua ntej tawg
Elongation:Qhia tau zoo heev ductility nyob rau hauv kev ntxhov siab
Weldability thiab Ductility
Cov ntsiab lus carbon tsawg tso cai yooj yim vuam yam tsis muaj preheating rau feem ntau cov mob
High elongation ua kom muaj kev ncaj ncees nyob rau hauv dynamic loads los yog seismic tej yam kev mob
Toughness thiab Hardness
Charpy cuam tshuam tus nqi ~ 27 J ntawm 0 degree
Balances hardness thiab ductility rau structural Cheebtsam
Nws tuaj yeem ua kom sov- kho lossis alloyed kom muaj zog dua yog tias xav tau
Kev sib piv nrog lwm cov hlau
Piv rauA36, S235JR, SS400, St37-2
Q235 yog pheej yig dua, yooj yim rau kev ua, thiab haum rau kev siv cov qauv siv dav dav
Tensile zog: 370-500 MPa; Yield zog Ntau dua los yog sib npaug rau 235 MPa
Daim ntawv thov
Kev tsim kho:Beams, kem, txuas hniav, tsim lub moj khaum
Kev tsim khoom:Machinery, cuab yeej, tsheb ncej
Cov khoom siv Fabrication:Panels, thav duab, thiab dav dav -khoom siv lub hom phiaj
Piping & Tubing:Nruab nrab -load daim ntawv thov
Zog & Infrastructure:Cua turbines, cia tank, pipelines
Qhov zoo
Tus nqi- zoo:Ntawm cov khoom pheej yig tshaj plaws steels muaj
Ntau yam:Haum thoob plaws kev lag luam
Zoo weldability & machinability: Tsawg heev tawg thiab distortion
Durable & txhim khu kev qha:Ua raws li ntau yam kev mob ib puag ncig
Lub cev muaj zog
Ceev:7.85 g / cm³
Haum Thickness: <16 mm (typical yield strength 235 MPa)
High elongation ua kom muaj kev poob siab
tuaj yeem kho qhov chaw (galvanization, pleev xim) kom txhim kho corrosion
