SUS304 vs SUS304L: Cov ntsiab lus Carbon & Weldability Review

Kev sib piv cov ntsiab lus carbon

SUS304:Max 0.08% carbon.

SUS304L (Low Carbon):Max 0.03% carbon.

Weldability & Corrosion Resistance

< The Problem (Sensitization):Thaum tus qauv 304 yog welded, lub tshav kub ua rau cov pa roj carbon sib xyaw nrog chromium, tsim chromium carbides ntawm cov ciam teb. Qhov no depletes thaj tsam ib puag ncig ntawm chromium, ua rau nws yooj yim rau intergranular corrosion (corrosion ntawm nplej).

304L Kev daws teeb meem:Cov pa roj carbon tsawg hauv 304L tiv thaiv kev tsim cov carbide tseem ceeb, txawm tias tom qab vuam, khaws nws cov corrosion kuj nyob rau hauv tshav kub - cuam tshuam cheeb tsam.

304 Weldability:Nruab nrab; haum rau cov ntu nyias lossis qhov chaw tshaj tawm -weld annealing (kev kho cua sov) yog ua kom rov-solve carbides.

304L Weldability:Zoo heev; nyiam dua rau tuab- ntu vuam (dhau 5 hli) thiab cov ntawv thov tseem ceeb xws li cov tso tsheb hlau luam, cov hlab ntsha siab, thiab siab - cov kav dej kub.

Lub zog & kev siv

Lub zog:304 muaj zog me ntsis (yield ntau dua / tensile lub zog) dua 304L vim nws cov ntsiab lus carbon ntau dua, raws li qee qhov specs.

304 Daim Ntawv Thov:Kev tsim vaj tsev dav dav, chav ua noj, thiab kev ua zaub mov uas vuam tsis yog qhov kev txhawj xeeb tseem ceeb.

304L Daim Ntawv Thov:Kev ua tshuaj lom neeg, cov khoom noj khoom haus / dej haus, cov khoom siv tshuaj, thiab cov khoom siv hauv hiav txwv uas qhov vuam yog qhov tseem ceeb rau kev tsim khoom.

Hauv essence, xaiv304Lrau vuam thiab corrosion- siv tseem ceeb; xaiv304rau lub zog dav dav thiab formability tsis hnyav vuam.