SA387Gr11 siab lub nkoj steel phaj
cov khoom siv thev naus laus zis
SA387Gr11 siab lub nkoj steel phaj nthuav dav qhia
SA387Gr11 siab hlab ntsha steel phaj yog chromium molybdenum alloy steel phaj siv nyob rau hauv kev tsim cov hlab ntsha thiab boilers nyob rau hauv kub thiab siab. SA387 yog A chromium-molybdenum alloy steel phaj rau cov hlab ntsha siab, qhov twg S yog ASME code, A yog cov khoom siv hlau (yog tias nws yog cov hlau tsis muaj hlau), 387 yog tus lej xov tooj, Gr11 yog qib 11.
Cov teeb meem hauv qab no yuav tshwm sim hauv kev siv SA387Gr11 siab hlab ntsha steel phaj
1. Corrosion: SA387Gr11 steel phaj yog nquag corrosion nyob rau hauv cov av noo, acidic thiab lwm yam ib puag ncig, cuam tshuam rau lub neej kev pab cuam thiab kev nyab xeeb kev ua tau zoo.
2. Hydrogen embrittlement: Hauv qee qhov chaw tshwj xeeb, xws li kub siab thiab kub siab dej vapor, SA387Gr11 steel phaj yog nquag hydrogen embrittlement, ua rau muaj zog brittleness ntawm steel phaj thiab yooj yim tawg thiab tawg.
3. Cov teeb meem vuam: Cov vuam kev ua tau zoo ntawm SA387Gr11 steel phaj tsis zoo, thiab cov teeb meem xws li qhov hws thiab cov kab nrib pleb yooj yim tshwm sim hauv cov txheej txheem vuam, cuam tshuam rau vuam zoo thiab kev pab cuam lub neej.
4. Kev qaug zog: nyob rau hauv cov nyhuv ntawm lub siab thiab kev vibration rau lub sijhawm ntev, SA387Gr11 steel phaj yog qhov ua rau qaug zog, ua rau tawg thiab tawg ntawm cov hlau phaj.
Cov tsis tseem ceeb ntawm SA387Gr11 siab nkoj steel phaj yog raws li nram no
Tshuaj muaj pes tsawg leeg
Cov pa roj carbon (C) {{0}}.15, lossis tsawg dua silicon (Si) ntawm 0.50 lossis tsawg dua, manganese (Mn) 0.{{ 5}}.65, phosphorus (P) ntawm 0. (Mo), 0.45 txog 0.65.
Lub zog tensile
515-690 MPa.
Yield zog
240 MPa.
Tus nqi ntawm elongation
22%
