Q355NH weathering steel yog huab cua-cov qauv hlau tsis muaj zog uas yog qis- alloy steel series ntawm cov hlau zoo tib yam thiab stainless hlau. Nws yog ua los ntawm cov pa roj carbon zoo tib yam nrog cov me me ntawm corrosion-cov khoom tiv taus xws li tooj liab thiab npib tsib xee. Q355NH weathering steel muaj lub zog, ductility, sib sau, thiab vuam ntawm siab - zoo steel. Txiav, abrasion, kub kub, qaug zog thiab lwm yam ntxwv; huab cua tsis kam yog 2-8 npaug ntawm cov pa roj carbon zoo tib yam, thiab cov cuab yeej txheej yog 1.5-10 npaug ntawm cov pa roj carbon zoo tib yam. Q355NH weathering steel yog tsuas yog siv rau tsheb ciav hlau, txuas hniav, yees thiab lwm yam steel qauv raug rau cov huab cua ntev.
Q355GNH weathering steel yog cov hlau uas ntxiv me me ntawm alloying ntsiab xws li Cu, P, Cr, Ni, thiab lwm yam. Q355GNH weathering steel muaj cov khoom zoo ntawm - zoo steel xws li toughness, ductility, sib sau, vuam, puas, kub thiab qaug zog.
Cov huab cua tsis kam ntawm Q355GNH weathering steel yog 2-8 npaug ntawm cov pa roj carbon zoo tib yam, thiab cov cuab yeej txheej yog 1.5-10 npaug ntawm cov pa roj carbon zoo tib yam. Nyob rau tib lub sijhawm, nws muaj cov yam ntxwv ntawm xeb tsis kam, corrosion kuj thiab lub neej ntev ntawm cov khoom, thinning thiab noj txo, thiab kev ua haujlwm thiab kev txuag hluav taws xob. Kev ua tau zoo thiab muaj pes tsawg leeg ntawm Q355GNH weathering steel zoo dua Q355NH weathering steel, thiab tus nqi siab dua.
Tshuaj muaj pes tsawg leeg ntawm Q355GNH siab weathering steel:
C: Tsawg dua lossis sib npaug 0.12, S: 0.20-0.75, Mn: Tsawg dua lossis sib npaug rau 1.00, P: 0.07-0.75, S: Tsawg dua lossis sib npaug 0.020, Cu: 0.25-0.55, Cr: 0.30-1.25 lossis sib npaug Ni
Tshuaj muaj pes tsawg leeg ntawm Q355NH weathering steel:
C: Tsawg dua lossis sib npaug ntawm 0.16, Si: Tsawg dua lossis sib npaug rau 0.50, Mn: 0.50-1.50, P: Tsawg dua lossis sib npaug 0.030, S: Tsawg dua lossis sib npaug 0.030, Mo: Tsawg dua lossis sib npaug 0.30, Cu: 0.25 Ti: 0.5 tshaj los yog sib npaug rau 0.12, Nb: Tsawg dua los yog sib npaug rau 0.06, Cr: 0.40-0.80 Nws
Mechanical zog ntawm Q355GNH siab weathering steel:
Lub zog tensile: Ntau dua lossis sib npaug rau 490 - 630 MPa, Lub zog tawm los: Tsawg dua lossis sib npaug ntawm 355 MPa, Elongation: Tsawg dua lossis sib npaug li 26
Txhua yam khoom ntawm Q355NH weathering steel:
Lub zog tensile: Ntau dua lossis sib npaug rau 516 - 670 MPa, Tawm taw tes: Ntau dua lossis sib npaug rau 355 MPa
Weathering steel feem ntau yog siv los ua cov txheej txheem xws li tsheb ciav hlau, cov tsev chaw nres nkoj, cov thawv ntim, cov khoom siv roj, cov khoom siv tshuaj thiab roj av thiab cov thawv ntim uas muaj hydrogen sulfide corrosive nruab nrab hauv cov roj derrick. Q355GNH thiab Q355NH weathering steel kuj tseem siv tau los tsim ntauwd, railway, choj, tsheb thiab lwm yam steel qauv raug rau cov huab cua ntev.
