S275JR square thiab plaub lub raj yog hom qis- alloy siab- lub zog cov qauv hlau dav siv hauv kev tsim kho, txuas hniav, tsheb, thiab lwm yam kev tsim vaj tsev. Raws li tus txheej txheem thoob ntiaj teb EN 10025, cov khoom tseem ceeb ntawm S275JR suav nrog carbon, manganese, silicon, phosphorus, thiab sulfur.
Tshwj xeeb, cov ntsiab lus carbon ntawm S275JR cov hlab ntsha yog feem ntau ntawm 0.10% thiab 0.21%, cov ntsiab lus tsis tshua muaj carbon uas ua rau nws zoo plasticity thiab toughness. Manganese yog ib qho tseem ceeb alloying ntsiab nyob rau hauv S275JR, feem ntau xws li ntawm 0.30% mus rau 0.60%, pab txhawb zog thiab hardness. Tsis tas li ntawd, cov ntsiab lus silicon feem ntau yog nruab nrab ntawm 0.1% thiab 0.4%, uas pab txhim kho cov hlau oxidation tsis kam thiab lub zog.
Hais txog impurities, phosphorus thiab sulfur ntsiab lus nyob rau hauv S275JR hollow hlab yog nruj me ntsis tswj, nrog phosphorus feem ntau tsis tshaj 0.04% thiab sulfur tsis tshaj 0.05%. Qhov kev tswj xyuas no ua kom cov hlau tawv thiab weldability, raws li cov ntsiab lus phosphorus thiab sulfur siab txo cov khoom ntawm cov hlau, uas ua rau kom muaj zog brittleness.
Tshuaj muaj pes tsawg leeg ntawm S275JR Steel Tube
Cov ntsiab lus tseem ceeb thiab cov ntsiab lus:
Cov ntsiab lus carbon (C): Tsawg dua lossis sib npaug rau 0.21.
Silicon Cov ntsiab lus (Si): Tsawg dua lossis sib npaug rau 0.50.
Manganese Cov ntsiab lus (Mn): Tsawg dua lossis sib npaug rau 1.50.
Phosphorus Cov ntsiab lus (P): Tsawg dua lossis sib npaug rau 0.035.
Cov ntsiab lus tooj liab (Cu): Tsawg dua lossis sib npaug rau 0.55.
Nitrogen Cov ntsiab lus (N): Tsawg dua lossis sib npaug rau 0.012.
Mechanical Properties ntawm S275JR Steel Pipe
Tensile Strength: Tensile zog (σb / MPa) nyob ntawm 430 txog 580 MPa.
Yield Point: Yield point (σs/MPa) Ntau dua lossis sib npaug li 270 MPa.
Elongation tom qab Fracture: Elongation tom qab tawg (δ5/%) Ntau dua los yog sib npaug rau 14.
Impact Performance: Impact zog J Ntau dua los yog sib npaug rau 27 ntawm qhov kub ntawm 20 degree.
S275JR Square thiab Rectangular Tube Delivery Conditions thiab Machining Performance
Cov xwm txheej xa khoom: S275JR feem ntau yog xa tawm hauv kub - dov, tswj - dov, dov li qub, thiab cov xwm txheej zoo li qub.
Machining Performance:
Txias Bending Performance: Zoo, yooj yim rau kev ua ntau yam dabtsi yog khoov.
Welding Performance: Zoo heev, haum rau ntau txoj kev vuam, xws li phau ntawv arc vuam thiab roj tiv thaiv vuam.
Machining Performance: Zoo, yooj yim rau tshuab.
S257JR High Strength Structural Steel Tube Hoobkas
