Q345 vs Q355: Dab tsi yog qhov txawv
Khoom Description
Tshuaj muaj pes tsawg leeg
Q345: Cov tshuaj muaj pes tsawg leeg ntawm Q345 steel feem ntau suav nrog cov ntsiab lus xws li carbon, phosphorus, silicon, sulfur, manganese, thiab cov lej ntawm lwm cov ntsiab lus alloying.
Q355: Q355 steel feem ntau muaj cov tshuaj zoo sib xws rau Q345, tab sis nws yuav muaj cov ntsiab lus sib txawv me ntsis lossis cov ntsiab lus nyob ntawm seb qhov txawv lossis hom.
Mechanical Properties
Yield Strength: Qhov tsawg kawg nkaus yield zog ntawm Q345 steel yog345 MPa ua, thaum lub zog tsawg kawg nkaus ntawm Q355 steel yog355 MPa rau. Qhov no txhais tau tias Q355 muaj lub zog tawm los me ntsis dua li Q345.
Tensile Strength: Lub zog tensile ntawm Q345 thiab Q355 steels yuav txawv nyob ntawm seb qhov txawv los yog hom. Feem ntau, Q345 steel muaj lub zog tensile ntau ntawm470-630 MPa, thaum Q355 steel muaj lub zog tensile ntau ntawm470-680 MPa. Qhov no qhia tau tias Q355 muaj peev xwm muaj zog tensile ntau dua Q345.
Impact Toughness
Q345: Q345 steel feem ntau nthuav tawm cov khoom zoo rau lub zog thiab tuaj yeem tiv taus cov khoom thauj tam sim ntawd lossis tsis muaj kev puas tsuaj.
Q355: Q355 steel paub txog nws qhov kev txhim kho toughness, muab kev txhim kho kev tiv thaiv rau kev cuam tshuam thiab dynamic loads piv rau Q345.
Daim ntawv thov thiab kev siv
Q345: Q345 steel yog dav siv nyob rau hauv ntau yam lag luam, nrog rau kev tsim kho, tshuab, tsheb thauj mus los, thiab shipbuilding. Nws yog feem ntau siv rau hauv cov khoom siv xws li txuas hniav, cov tsev, thiab cov qauv sab nrauv.
Q355: Q355 steel yog qhov tshiab dua thiab tau tsim los muab cov khoom zoo dua qub piv rau Q345. Nws yog tsim rau cov ntawv thov uas yuav tsum tau muaj zog dua, toughness, thiab tsis kam mus rau dynamic loads. Q355 steel feem ntau yog siv rau hauv cov txheej txheem engineering, suav nrog cov tsev siab siab, txuas hniav, thiab cov tshuab hnyav.
Khoom Paub meej
Cov tshuaj muaj pes tsawg leeg ntawm Q345 steel phaj thiab Q355 steel phaj
Q345 tshuaj muaj pes tsawg leeg ntawm steel phaj:
| C | Si | Mn | P | S | Nb | V | Ti | Cr | Ni | Cu | N | Mo | Als |
| Tsawg dua lossis sib npaug rau 0.18 | Tsawg dua lossis sib npaug rau 0.50 | Tsawg dua lossis sib npaug li 1.70 | Tsawg dua lossis sib npaug rau 0.030 | Tsawg dua lossis sib npaug rau 0.025 | Tsawg dua lossis sib npaug rau 0.07 | Tsawg dua lossis sib npaug rau 0.15 | Tsawg dua lossis sib npaug rau 0.20 | Tsawg dua lossis sib npaug rau 0.30 | Tsawg dua lossis sib npaug rau 0.50 | Tsawg dua lossis sib npaug rau 0.30 | Tsawg dua lossis sib npaug rau 0.012 | Tsawg dua lossis sib npaug rau 0.10 | Ntau dua lossis sib npaug rau 0.015 |
Cov tshuaj muaj pes tsawg leeg ntawm Q355 steel phaj:
| C | Si | Mn | P | S | Nb | V | Ti | Cr | Ni | Cu | N | Mo | Als |
| Tsawg dua lossis sib npaug rau 0.14 | Tsawg dua lossis sib npaug rau 0.50 | Tsawg dua lossis sib npaug li 1.60 | Tsawg dua lossis sib npaug rau 0.025 | Tsawg dua lossis sib npaug rau 0.025 | 0.01-0.05 | 0.01-0.10 | 0.006-0.05 | Tsawg dua lossis sib npaug rau 0.30 | Tsawg dua lossis sib npaug rau 0.50 | Tsawg dua lossis sib npaug rau 0.40 | Tsawg dua lossis sib npaug rau 0.015 | Tsawg dua lossis sib npaug rau 0.10 | Ntau dua lossis sib npaug rau 0.015 |
Cov duab khoom
GNEE Pab Pawg Neeg Tuaj Saib
Yog tias koj muaj kev xav tau ntau ntxiv thiab cov lus nug txog steel, peb zoo siab los qhia koj!