904L waa Super Austenstic Stainless Steel oo leh kaarboon yar.Darajada waxaa loogu talagalay in lagu isticmaalo xaaladaha daxalka daran.Waxaa la tijaabiyay sanado badan waxaana markii hore loo sameeyay si ay uga hortagto daxalka sulfuric acid.Waxa loo habeeyey oo loo oggolaaday isticmaalka weelka cadaadiska ee dalal dhawr ah.Dhisme ahaan, 904L si buuxda ayuu austenitic u yahay oo aad bay uga nugul yihiin roobabka ferrite iyo wejiyada sigma marka loo eego buundooyinka austenitic-ka caadiga ah ee leh molybdenum sare.Dabeecad ahaan, iyadoo ay ugu wacan tahay isku darka ka kooban chromium, nikkel, molybdenum iyo copper 904L waxay iska caabin wanaagsan u leedahay daxalka guud, gaar ahaan xaaladaha sulfuric iyo phosphoric.
C | Cr | Ni | Mo | Si | Mn | P | S | Cu | N |
≤0.02 | 19.0-23.0 | 23.0-28.0 | 4.0-5.0 | ≤1.0 | ≤2.0 | ≤0.045 | ≤0.035 | 1.0-2.0 | ≤1.0 |
Cufnaanta (g/cm3) | barta dhalaalaysa (℃) | modules laastikada (GPa) | Isku xidhka balaadhinta kulaylka (10-6℃-1) | Dhaqdhaqaaqa kulaylka (W/m℃) | Iska caabin koronto (μΩm) |
8.0 | 1300-1390 | 195 | 15.8 | 12 | 1.0 |
Heerkulka (℃) | b (N/mm2) | б0.2 (N/mm2) | 5 (%) | HRB |
Heerkulka qolka | ≤490 | ≤220 | ≥35 | ≤90 |
ASME SB-625, ASME SB-649, ASME SB-673, ASME SB-674, ASME SB-677
•Iska caabbinta wanaagsan ee daxalka godka iyo daxalka dillaaca
•Iska caabbinta sare ee dillaaca daxalka stress, intergranular, machinability wanaagsan iyo weldability
•Dhammaan noocyada kala duwan ee phosphates904L iska caabin daxalka aluminium ayaa ka sarreeya birta caadiga ah.
•Nitric acid oxidizing xooggan, marka la barbar dhigo daawaha sare aan lahayn darajada birta molybdenum, 904L waxay muujinaysaa iska caabbinta daxalka hoose.
•Daawaha Tani waxay leedahay iska caabin daxalka ka wanaagsan tan caadiga ah birta .
•Iska yaree heerka daxalka godka iyo daldaloolada maadada sare ee nikkel, oo iska caabin wanaagsan u leh daxalka walaacadildilaaca, deegaanka xal chloride, xooga saarida xal hydroxide iyo hydrogen sulfide qani ah.
•Qalabka batroolka iyo kiimikooyinka, sida fal-celinta qalabka batroolka, iwm.
•Aashitada sulfuric ee kaydinta iyo qalabka gaadiidka, sida kuwa kulaylka beddela, iwm.
•Qalabka desulfurization gaaska tamarta warshadda, qaybaha ugu muhiimsan ee isticmaalka: jirka munaaradda nuuga, qiiqa, qaybaha gudaha, nidaamka buufin, iwm
•Nadiifinta aashitada dabiiciga ah iyo marawaxada ku jirta nidaamka habaynta.
•Warshadda biyaha lagu daweeyo, kulaylka biyaha beddela, qalabka waraaqaha lagu sameeyo, sulfuric acid, qalabka nitric acid, aashitada,
•Warshadaha dawooyinka iyo qalabka kale ee kiimikada, weelka cadaadiska, qalabka cuntada.
•Daawooyinka: centrifuge, reactor, iwm.
•Cuntooyinka dhirta: dheriga maraqa soyka, khamriga karinta, milixda, qalabka iyo dhaymada.
•Si loo milo sulfuric acid bir dhexdhexaad ah oo xoog badan 904 l ayaa ku habboon.