EN 10025-2 qhov txwv Phosphorus cov ntsiab lus hauv S355jr UB hlau mus rau 0.035% Max. Phosphorus yog qhov tseem ceeb impured los ntawm steelmaking, tab sis theem siab ua rau muaj kev phom sij hnyav:
Tsawg - kub tawm: Phosphorus segregates ntawm cov ciaj ciam nplej, tsis muaj zog intergranur boundarran pawg thiab ua cov steel nquag mus rau qhov kub thiab txias hauv qab no}}} degree. Piv txwv li, S355jr ub nqaj nrog 0.040% phosphorus yuav tawg sai sai hauv cov khaub thuas txias.
Weldability txo: Tshaj phosphorus nce kev pheej hmoo ntawm cov cua sov {}}} Cov khoom siv hlau, thiab ua haujlwm siv cov txheej txheem metallurgy (piv txwv li, slagging) kom tshem tawm impurities. Tshaj tawm -}}} production, txhua pob yog kuaj ntawm spectroscopic tsom xam, nrog phosphorus qib teev nyob rau hauv cov ntaub ntawv pov thawj. Qhov kev txwv nruj no ua kom muaj txiaj ntsig S355jr khaws cov tawv tawv thiab weldability hla txhua yam kev pabcuam.